TY - JOUR AU - Cseresznyés, Dóra AU - Király, Csilla AU - Gál, Á AU - Papucs, A AU - Kónya, P AU - Lakos, I AU - Kovács, Ivett AU - Rinyu, László AU - Szamosfalvi, Á AU - Szabó, Csaba AU - Falus, György AU - Czuppon, György TI - Surface occurrence of dawsonite and natural CO2 emanation in Covasna, in the Eastern Carpathians: A stable isotope study JF - CHEMICAL GEOLOGY J2 - CHEM GEOL VL - 645 PY - 2024 SN - 0009-2541 DO - 10.1016/j.chemgeo.2023.121883 UR - https://m2.mtmt.hu/api/publication/34445854 ID - 34445854 N1 - Lithosphere Fluid Research Lab (LRG), Eötvös Loránd University (ELTE), Pázmány Péter sétány 1/C, Budapest, 1117, Hungary Doctoral School of Environmental Science, Eötvös Loránd University (ELTE), Pázmány Péter sétány 1/C, Budapest, 1117, Hungary Geographical Institute (GI), Research Centre for Astronomy and Earth Sciences, Eötvös Loránd Research Network, Budaörsi út 45, Budapest, 1112, Hungary Department of Geology, Babeș-Bolyai University, Kogălniceanu str. 1., Cluj, RO-400084, Romania County Nature Conservation and Mountain Rescue Center, Gábor Áron str. 1., Sfântu Gheorghe, RO-520003, Romania Directorate of Geology, Supervisory Authority for Regulatory Affairs (SARA), Sas utca 20-22., Budapest, 1051, Hungary Institute for Geological and Geochemical Research, HUN-REN Research Centre for Astronomy and Earth Sciences, Budaörsi út 45, Budapest, 1112, Hungary CSFK, MTA Centre of Excellence, Konkoly Thege Miklós út 15–17, Budapest, 1121, Hungary Isotope Climatology and Environmental Research Centre (ICER), Institute for Nuclear Research (ATOMKI), HUN-REN, Bem tér 18/c., Debrecen, 4026, Hungary Institute of Earth Physics and Space Science, HUN-REN, Csatkai Endre utca 6-8., Sopron, 9400, Hungary Export Date: 15 January 2024 Correspondence Address: Czuppon, G.; Institute for Geological and Geochemical Research, Budaörsi út 45, Hungary; email: czuppon@geochem.hu LA - English DB - MTMT ER - TY - THES AU - Cseresznyés, Dóra TI - Origin and formation of carbonate minerals related to natural CO2 occurrences PB - Eötvös Loránd Tudományegyetem (ELTE) PY - 2023 SP - 117 DO - 10.15476/ELTE.2023.042 UR - https://m2.mtmt.hu/api/publication/34166399 ID - 34166399 LA - English DB - MTMT ER - TY - JOUR AU - Gyollai, Ildikó AU - Chatzitheodoridis, E AU - Kereszturi, Ákos AU - Szabó, Máté Zoltán TI - Multiple generation magmatic and hydrothermal processes in a Martian subvolcanic environment based on the analysis of Yamato‐000593 nakhlite meteorite JF - METEORITICS & PLANETARY SCIENCE J2 - METEORIT PLANET SCI VL - 58 PY - 2023 IS - 2 SP - 218 EP - 240 PG - 23 SN - 1086-9379 DO - 10.1111/maps.13950 UR - https://m2.mtmt.hu/api/publication/33632051 ID - 33632051 N1 - Funding Agency and Grant Number: NKFIH [K_138594, GINOP-2.3.2-15-2016-00003]; Hungarian State Eotvos Scholarship of the Tempus Public Foundation (Hungary) [MAE_ O2016_1]; [COST-TD1308]; [STSM-010215053644-53644]; [COOP-NN-116927] Funding text: The authors are grateful to the National Technical University of Athens. This work was also supported by the K_138594 fund of NKFIH. We would also like to thank Dr Ian Lyon, from the University of Manchester, Department of Earth and Environmental Sciences, for providing meteorite samples from their collection. The first part of this work was also supported by COST-TD1308, and related STSM-010215053644-53644 grant and COOP-NN-116927 projects. The measurements of this project have been supported by the GINOP-2.3.2-15-2016-00003 grant of the NKFIH. The presentation of this work on EANA (European Astrobiology Network Association) Meeting 2016 is supported by Hungarian State E_otv_os Scholarship (MAE_ O2016_1) of the Tempus Public Foundation (Hungary). LA - English DB - MTMT ER - TY - JOUR AU - Király, Csilla AU - Cseresznyés, Dóra AU - Magyar, Norbert AU - Hatvani, István Gábor AU - Egedy, Tamás AU - Szabó-Krausz, Zsuzsanna AU - Udvardi, Beatrix AU - Jakab, Gergely Imre AU - Varga, György AU - Szalai, Zoltán TI - The role of water and weathering processes in landslides in Hungarian loess sediment JF - HYDROLOGY J2 - HYDROLOGY-BASEL VL - 10 PY - 2023 IS - 4 PG - 13 SN - 2306-5338 DO - 10.3390/hydrology10040081 UR - https://m2.mtmt.hu/api/publication/33727670 ID - 33727670 N1 - Geographical Institute, Research Centre for Astronomy and Earth Sciences, ELKH, Budapest, 1112, Hungary CSFK, MTA Centre of Excellence, Budapest, 1121, Hungary Lithosphere Fluid Research Lab, Faculty of Science, Eötvös University, Budapest, 1117, Hungary Department of Methodology for Business Analysis, Faculty of Commerce, Hospitality and Tourism, Budapest Business School, University of Applied Sciences, Budapest, 1054, Hungary Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, ELKH, Budapest, 1112, Hungary Department of Tourism, Faculty of Commerce, Hospitality and Tourism, Budapest Business School, University of Applied Sciences, Budapest, 1054, Hungary TÜV Rheinland InterCert Kft, Budapest, 1143, Hungary Department of Environmental and Landscape Geography, Faculty of Science, ELTE, Eötvös University, Budapest, 1117, Hungary Export Date: 8 January 2024 Correspondence Address: Király, C.; Geographical Institute, Hungary; email: kiraly.csilla@csfk.org LA - English DB - MTMT ER - TY - JOUR AU - Knijnenburg, Jesper T. N. AU - Kasemsiri, Pornnapa AU - Kaewpradit, Wanwipa AU - Tarinta, Tanyarat AU - Jantapa, Wasu AU - Jeejaila, Thanawan AU - Saengthip, Chanon AU - Jetsrisuparb, Kaewta TI - Co-pyrolysis of biomass with magnesium and phosphorus: effect of magnesium content on phosphate release from biochar-based fertilizers JF - BIOMASS CONVERSION AND BIOREFINERY J2 - BIOMASS CONV BIOREFINERY PY - 2023 PG - 11 SN - 2190-6815 DO - 10.1007/s13399-023-03994-4 UR - https://m2.mtmt.hu/api/publication/33894426 ID - 33894426 AB - Biochar-based fertilizers prepared through co-pyrolysis of biomass with phosphorus (P) and magnesium (Mg) present an attractive alternative over conventional fertilizers to improve P delivery to crops. Here, sugarcane filter cake was treated with MgO and H3PO4 at different Mg:P ratios (0.5, 1, 1.5, and 2) followed by pyrolysis at 600 degrees C. The resulting modified biochars were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and total Mg and P. The extractable P was measured in deionized (DI) water and 2% formic acid, and the kinetic phosphate release in DI water was monitored over 240 h. Increasing the Mg:P ratio in the biochar greatly increased the total and extractable P in 2% formic acid but resulted in a lower kinetic phosphate release in DI water. This was explained by a change in P speciation (from crystalline pyrophosphate towards amorphous orthophosphate) and increase in biochar pH with increasing Mg contents. The higher 2% formic acid-extractable P and lower water-soluble P at high Mg:P ratios suggested that the P is potentially highly available to crops while having a reduced risk for P loss to surface waters. Their high pH makes these Mg- and P-rich biochar-based fertilizers potentially attractive for application in acidic soils. LA - English DB - MTMT ER - TY - JOUR AU - Laag, Ch AU - Lagroix, F AU - Kreutzer, S AU - Chapkanski, S AU - Zeeden, Ch AU - Guyodo, Y TI - Measuring and evaluating colorimetric properties of samples from loess-paleosol sequences JF - METHODSX J2 - METHODSX VL - 10 PY - 2023 SN - 2215-0161 DO - 10.1016/j.mex.2023.102159 UR - https://m2.mtmt.hu/api/publication/33734600 ID - 33734600 LA - English DB - MTMT ER - TY - JOUR AU - Marussi, G AU - Crosera, M AU - Prenesti, E AU - Callegher, B AU - Baracchini, E AU - Turco, G AU - Adami, G TI - From collection or archaeological finds? A non-destructive analytical approach to distinguish between two sets of bronze coins of the Roman Empire JF - MOLECULES J2 - MOLECULES VL - 28 PY - 2023 IS - 5 SN - 1420-3049 DO - 10.3390/molecules28052382 UR - https://m2.mtmt.hu/api/publication/33692240 ID - 33692240 AB - This study stems from the need for numismatics to establish whether there may be relationships between a group of 103 bronze coins from the Roman era found in archaeological excavations on the Cesén Mountain (Treviso, Italy) and a group of 117 coins kept at the Museum of Natural History and Archaeology in Montebelluna (Treviso, Italy). The chemists were delivered six coins with neither pre-agreements nor further information on the origin of the coins. Therefore, the request was to hypothetically assign the coins to the two groups on the basis of similarities and differences in their surface composition. Only non-destructive analytical techniques were allowed to be used to characterize the surface of the six coins taken blindly from the two sets. The elemental analysis of each coins’ surface was carried out by µ-XRF. To better observe the morphology of the coins’ surfaces, SEM-EDS was used. Compounds covering the coins coming from both corrosion processes (patinas) and the deposition of soil encrustations were also analyzed by means of the FTIR-ATR technique. The molecular analysis confirmed the presence of silico-aluminate minerals on some coins, unequivocally indicating a provenance from clayey soil. Some soil samples, collected from the archaeological site of interest, were analyzed to verify whether the encrusted layer on coins could contain chemical components compatible with them. This result, together with the chemical and morphological investigations, led us to subdivide the six target coins into two groups. The first group is made up of two coins coming from the set of coins from excavation (found in the subsoil) and from the set from open air finds (coins found in the top layer of the soil). The second group is made up of four coins that are devoid of characteristics corresponding to exposure to soil contact for long periods of time and, moreover, their surface compounds could suggest a different provenance. The analytical results of this study made it possible to correctly assign all six coins to the two groups of finds and support numismatics, which was unconvinced in considering all coins to come from the same finding site only on the basis of archaeological documentations. LA - English DB - MTMT ER - TY - JOUR AU - Fan, Q AU - Chen, H AU - Liao, Q AU - Zhang, Ch AU - Ding, Y AU - Zou, X AU - Fu, G TI - Distribution of organophosphate ester fractions in sediment of the Eastern China Marginal Seas and the influencing factors JF - ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH J2 - ENVIRON SCI POLLUT R VL - 29 PY - 2022 SN - 0944-1344 DO - 10.1007/s11356-022-23921-w UR - https://m2.mtmt.hu/api/publication/33211160 ID - 33211160 N1 - School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing, 210023, China Collaborative Innovation Center of South China Sea Studies, Nanjing University, Nanjing, 210023, China Export Date: 12 January 2023 CODEN: ESPLE Correspondence Address: Zou, X.; School of Geography and Ocean Science, China; email: zouxq@nju.edu.cn LA - English DB - MTMT ER - TY - JOUR AU - Geçer, A TI - Relation of the grain size, petrophysical parameters, and Fourier transform infrared analysis of Kusuri sandstones in the Zonguldak subbasin of the West Black Sea, Turkey JF - BULGARIAN CHEMICAL COMMUNICATIONS J2 - BULG CHEM COMMUN VL - 54 PY - 2022 IS - 3 SP - 235 EP - 241 PG - 7 SN - 0324-1130 DO - 10.34049/bcc.54.3.F003 UR - https://m2.mtmt.hu/api/publication/33114592 ID - 33114592 N1 - Export Date: 12 January 2023 Correspondence Address: Geçer, A.; Department of Chemical Engineering, Tandoğan Campus, Turkey; email: Aylin.Gecer@eng.ankara.edu.tr LA - English DB - MTMT ER - TY - JOUR AU - Jetsrisuparb, K AU - Jeejaila, Th AU - Saengthip, Ch AU - Kasemsiri, P AU - Ngernyen, Y AU - Chindaprasirt, P AU - Knijnenburg, J T N TI - Tailoring the phosphorus release from biochar-based fertilizers: role of magnesium or calcium addition during co-pyrolysis JF - RSC ADVANCES J2 - RSC ADV VL - 12 PY - 2022 IS - 47 SP - 30539 EP - 30548 PG - 10 SN - 2046-2069 DO - 10.1039/D2RA05848K UR - https://m2.mtmt.hu/api/publication/33202963 ID - 33202963 N1 - Department of Chemical Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand Sustainable Infrastructure Research and Development Center, Khon Kaen University, Khon Kaen, 40002, Thailand Department of Civil Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand International College, Khon Kaen University, Khon Kaen, 40002, Thailand Cited By :1 Export Date: 12 January 2023 CODEN: RSCAC Correspondence Address: Knijnenburg, J.T.N.; Sustainable Infrastructure Research and Development Center, Thailand; email: jespth@kku.ac.th AB - The addition of MgO in the co-pyrolysis of sugarcane filter cake with H 3 PO 4 resulted in a biochar-based fertilizer with gradual P release over time. In contrast, the P release from the biochar modified with CaO and H 3 PO 4 was poor. LA - English DB - MTMT ER - TY - JOUR AU - Nicoud, Elisa AU - Aureli, Daniele AU - Pagli, Marina AU - Villa, Valentina AU - Tomasso, Antonin AU - Pereira, Alison AU - Nomade, Sebastien AU - Lemorini, Cristina AU - Zupancich, Andrea AU - Nunziante Cesaro, Stella TI - Techno-economic behaviours during Middle Pleistocene: Valle Giumentina level ALB-42 (MIS 12b, Abbateggio, Central Italy) JF - BULLETIN DE LA SOCIETE PREHISTORIQUE FRANCAISE J2 - BUL SOC PREHISTORIQUE FRANC VL - 119 PY - 2022 IS - 3 SP - 379 EP - 420 PG - 42 SN - 0249-7638 UR - https://m2.mtmt.hu/api/publication/33894427 ID - 33894427 AB - The recent excavation of level ALB-42 of Valle Giumentina open air site (Italy) has yielded 407 lithic artefacts and some Red Deer bone fragments, showing anthropic marks. Lithic refits appear in this clayey-silty paleosol developed during an interstadial phase, assigned to MIS 12b (c. 450 ka) according to sedimentary studies and radiometric dating (Ar-40/Ar-39 and ESR-U/Th). Here we present taphonomic and spatial studies and a techno-economic approach including archeozoology, petrography, technology and use-wear analysis on artefacts. Good quality cherts were selected mainly from the immediate surroundings. They were brought into the site as small blocks or big flakes. Tool making or retouching are sometimes made on the spot. Tools are used for wood processing and butchery during brief but recurrent activities. A techno-morphological diversity of lithic products appears leading us to discuss intra- and extra- site diversity within the Lower Paleolithic of Italy and MIS 12 settlements in Europe. LA - English DB - MTMT ER - TY - JOUR AU - Chruszcz-Lipska, K AU - Solecki, M L AU - Trzewik, B AU - Maruta, M AU - Wartak, J AU - Zagrajczuk, D TI - IR spectroscopy as a fast method of determining carbonate content in the Sarmatian-Badenian sandstone reservoirs : a case study from the Carpathian Foredeep (Poland) JF - GEOLOGICA CARPATHICA J2 - GEOL CARPATH VL - 72 PY - 2021 IS - 4 SP - 333 EP - 343 PG - 11 SN - 1335-0552 DO - 10.31577/GeolCarp.72.4.4 UR - https://m2.mtmt.hu/api/publication/32192680 ID - 32192680 N1 - AGH University of Science and Technology in Kraków, Faculty of Drilling, Oil and Gas, Al. Mickiewicza 30, Kraków, 30-059, Poland Jagiellonian University, Faculty of Chemistry, ul. Gronostajowa 2, Kraków, 30-387, Poland Export Date: 12 January 2023 Correspondence Address: Chruszcz-Lipska, K.; AGH University of Science and Technology in Kraków, Al. Mickiewicza 30, Poland; email: lipska@agh.edu.pl LA - English DB - MTMT ER - TY - GEN AU - Dorta Delgado, M C TI - Reducing silica content in rice husk by decantation methods. Master thesis for sustainable biotechnology TS - Master thesis for sustainable biotechnology PY - 2021 SP - 1 EP - 39 PG - 39 UR - https://m2.mtmt.hu/api/publication/32565456 ID - 32565456 LA - English DB - MTMT ER - TY - JOUR AU - Karlik, Máté AU - Gyollai, Ildikó AU - Vancsik, Anna AU - Fintor, Krisztián AU - Szalai, Zoltán AU - Mindrescu, M AU - Gradinaru, I AU - Vágási, S AU - Bozsó, Gábor AU - Polgári, Márta Piroska AU - Pál-Molnár, Elemér TI - High resolution mineralogical characterization of sediments - Lake Bolatau-Feredeu (Romania) JF - CARPATHIAN JOURNAL OF EARTH AND ENVIRONMENTAL SCIENCES J2 - CARPATH J EARTH ENVIRON SCI VL - 16 PY - 2021 IS - 1 SP - 199 EP - 210 PG - 12 SN - 1842-4090 DO - 10.26471/cjees/2021/016/167 UR - https://m2.mtmt.hu/api/publication/31882528 ID - 31882528 N1 - Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Bem tér 18/c, Debrecen, H-4026, Hungary Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, Elkh, Budapest, Hungary Geographical Institute, Research Centre for Astronomy and Earth Sciences, Budapest, Hungary Department of Mineralogy, Geochemistry and Petrology, University of Szeged, Szeged, Hungary Department of Environmental and Landscape Geography, Eötvös Loránd University, Budapest, Hungary Department of Geography, Ștefan cel Mare University, Suceava, Romania Copenhagen, Denmark Eszterházy Károly University, Dept. of Natural Geography and Geoinformatics, Eger, Hungary Cited By :4 Export Date: 6 December 2022 Correspondence Address: Karlik, M.; Isotope Climatology and Environmental Research Centre, Bem tér 18/c, Hungary; email: karlikmate@gmail.com Funding details: European Commission, EC Funding details: European Regional Development Fund, FEDER Funding details: National Research, Development and Innovation Office, 125060 Funding text 1: The authors thank for the support by the National Research, Development and Innovation Office, Hungary, National Scientific Research Fund No. 125060. The authors thank for the support by the European Union and the State of Hungary, co-financed by the European Regional Development Fund in the project of GINOP-2.3.2.-15-2016-00009 ‘ICER’. LA - English DB - MTMT ER - TY - JOUR AU - Riordan, K J AU - Field, J S AU - Dudgeon, J V TI - Investigating geoarchaeological deposits from Naihehe cave in the Sigatoka River valley of Viti Levu, Fiji JF - JOURNAL OF ARCHAEOLOGICAL SCIENCE: REPORTS J2 - J ARCHAEOL SCI REP VL - 40 PY - 2021 SN - 2352-409X DO - 10.1016/j.jasrep.2021.103202 UR - https://m2.mtmt.hu/api/publication/32475189 ID - 32475189 N1 - The Ohio State University, Anthropology Department, 4034 Smith Laboratory, 174 W. 18th Avenue, Columbus, OH 43210-113, United States Idaho State University, Anthropology Department, 921 S. 8th Avenue, Stop 8005, Pocatello, ID 83209-8005, United States Export Date: 12 January 2023 Correspondence Address: Riordan, K.J.; The Ohio State University, 4034 Smith Laboratory, 174 W. 18th Avenue, United States; email: riordan.26@osu.edu LA - English DB - MTMT ER - TY - JOUR AU - Büyükutku, A AU - Gecer, A TI - Trakya havzası kuzeybatısında hamitabat formasyonu denizaltı yelpaze Kumtaşlarının rezervuar potansiyeli JF - Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi PY - 2020 SN - 2146-538X DO - 10.17714/gumusfenbil.533368 UR - https://m2.mtmt.hu/api/publication/31269547 ID - 31269547 LA - Turkish DB - MTMT ER - TY - JOUR AU - De Mastro, F AU - Cocozza, C AU - Brunetti, G AU - Traversa, A TI - Chemical and spectroscopic investigation of different soil fractions as affected by soil management JF - APPLIED SCIENCES-BASEL J2 - APPL SCI-BASEL VL - 10 PY - 2020 IS - 7 SN - 2076-3417 DO - 10.3390/app10072571 UR - https://m2.mtmt.hu/api/publication/31277996 ID - 31277996 N1 - Cited By :9 Export Date: 12 January 2023 Correspondence Address: Brunetti, G.; Dipartimento di Scienze del Suolo, Via Amendola 165/A, Italy; email: gennaro.brunetti@uniba.it LA - English DB - MTMT ER - TY - JOUR AU - Zacháry, Dóra AU - Filep, Tibor AU - Jakab, Gergely Imre AU - Molnár, Mihály AU - Kertész, Gréta Titanilla AU - Király, Csilla AU - Hegyi, I AU - Gáspár, L AU - Szalai, Zoltán TI - Carbon isotope measurements to determine the turnover of soil organic matter fractions in a temperate forest soil JF - AGRONOMY (BASEL) J2 - AGRONOMY-BASEL VL - 10 PY - 2020 IS - 12 SN - 2073-4395 DO - 10.3390/agronomy10121944 UR - https://m2.mtmt.hu/api/publication/31784562 ID - 31784562 LA - English DB - MTMT ER - TY - JOUR AU - Aghayev, T AU - Küçükuysal, C TI - Ceramic properties of Uşak clay in comparison with Ukrainian clay JF - CLAY MINERALS J2 - CLAY MINER VL - 53 PY - 2019 IS - 4 SP - 549 EP - 562 PG - 14 SN - 0009-8558 DO - 10.1180/clm.2018.40 UR - https://m2.mtmt.hu/api/publication/30699131 ID - 30699131 N1 - Export Date: 3 September 2019 CODEN: CLMIA Correspondence Address: Aghayev, T.; Muǧla Sltkl Koçman University, Faculty of Engineering, Department of Geological EngineeringTurkey; email: turalaghayv@gmail.com LA - English DB - MTMT ER - TY - JOUR AU - Geçer, A AU - Büyükutku, A AU - Gültekin, F TI - Reservoir descriptions of the Kömürlü and Penek Formations near Erzurum, East Anatolia, Turkey JF - JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGIES J2 - J OF PETROLEUM EXPLORATION AND PROD TECH VL - 9 PY - 2019 IS - 3 SP - 1677 EP - 1693 PG - 17 SN - 2190-0558 DO - 10.1007/s13202-019-0645-6 UR - https://m2.mtmt.hu/api/publication/30614912 ID - 30614912 N1 - Department of Chemical Engineering, Ankara University Faculty of Engineering, Beşevler, Ankara 06100, Turkey Department of Geological Engineering, Ankara University Faculty of Engineering, Gölbaşı, Ankara 06830, Turkey Export Date: 12 January 2023 Correspondence Address: Büyükutku, A.; Department of Geological Engineering, Turkey; email: mxwb2448@yahoo.com LA - English DB - MTMT ER - TY - JOUR AU - Gecer, Aylin AU - Buyukutku, Aynur AU - Caetano, Paulo S. AU - Rocha, Fernando T. AU - Kibris, Mithat E. AU - Albayrak, Mustafa TI - Reservoir potential of the Haymana Formation submarine-fan sandstones in the Haymana Basin of Turkey JF - JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGIES J2 - J OF PETROLEUM EXPLORATION AND PROD TECH VL - 9 PY - 2019 IS - 3 SP - 1819 EP - 1837 PG - 19 SN - 2190-0558 DO - 10.1007/s13202-019-0666-1 UR - https://m2.mtmt.hu/api/publication/30858531 ID - 30858531 N1 - Department of Chemical Engineering, Engineering Faculty, Tandoğan Campus, Ankara University, Ankara, 06100, Turkey Department of Geological Engineering, Engineering Faculty, Gölbaşı Campus, Ankara University, Ankara, 06830, Turkey Sciences and Technology Faculty, New University of Lisbon, Caparica, 2829-516, Portugal Department of Geosciences, Geobiotec Research Centre, Aveiro University, Aveiro, 3810, Portugal General Directorate of Mineral Research and Exploration, Ankara, 06800, Turkey Export Date: 12 January 2023 Correspondence Address: Buyukutku, A.; Department of Geological Engineering, Turkey; email: mxwb2448@yahoo.com AB - Sedimentological and petrographic studies of the Haymana Formation sandstones identify a submarine fan in the Haymana Basin. This study is confined to outcrop samples from the submarine-fan sandstones (the L1, L2, and L3 sections) and focuses on documentation of the petrographic characteristics of and depositional controls on reservoir properties of the Haymana Formation sandstones. Analysis of the lithology, texture, sedimentary structure, and petrography of the outcrop samples allows separation of the Haymana Formation sandstones into three distinct lithofacies, A, B, and C. Lithofacies A sandstones exhibit medium-coarse grain sizes (0.4-0.6 mm), moderate-good sorting, and subrounded grains. Lithofacies B sandstones exhibit fine grain sizes (0.2 mm), moderate sorting, and subrounded-subangular grains. Lithofacies C sandstones exhibit very fine grain sizes (0.112 mm) and nonreservoir facies. The main aim of this study is to document the diagenetic history and reservoir quality of the Haymana Formation sandstones. Lithofacies A has the best permeability, ranging from 80 to 120 mD, which can be related to the large grain size, the presence of cross-bedding, small amount of authigenic clays or cements in the pore throats, and enlarged pore apertures. In contrast, Lithofacies B sandstones contain variable yet small pore and pore-throat sizes, which are affected by abundant pore-filling authigenic clays, small grain sizes, and no dissolution. The permeability of the Lithofacies B sandstone ranges from 16 to 35 mD, which is lower than that of the Lithofacies A sandstone. Additionally, the Lithofacies B sandstones have small median pore-throat sizes (mean = 1.52 mu m) and low porosities (average 4-6%), and the Lithofacies A sandstones have large pore-throat sizes (mean = 2.06-3 mu m) and high porosities (average 20-25%), with most pore throats (50% or more) ranging between 1 and 4 mu m. According to these data, the Lithofacies A sandstones show good reservoir characterisation. To date, significant hydrocarbon deposits have not been discovered in the Haymana Formation sandstones, although intensive exploratory work towards this end has been carried out in the Haymana Basin. According to this study, the proximal sandstones of the submarine-fan complex of the Haymana Formation may contain high-potential reservoirs in the Haymana Basin. In the basin, hydrocarbon is sourced from deep zones and may be capped by the proximal part of the Haymana Formation sandstones. According to this study, the Lithofacies B sandstones of the Haymana Formation are not suitable as diagenetic traps for hydrocarbon exploration in the Haymana Basin. However, the Lithofacies A sandstones may be expected to have the highest exploration success. LA - English DB - MTMT ER - TY - JOUR AU - Giannetta, B. AU - Zaccone, C. AU - Plaza, C. AU - Siebecker, M.G. AU - Rovira, P. AU - Vischetti, C. AU - Sparks, D.L. TI - The role of Fe(III) in soil organic matter stabilization in two size fractions having opposite features JF - SCIENCE OF THE TOTAL ENVIRONMENT J2 - SCI TOTAL ENVIRON VL - 653 ET - 0 PY - 2019 SP - 667 EP - 674 PG - 8 SN - 0048-9697 DO - 10.1016/j.scitotenv.2018.10.361 UR - https://m2.mtmt.hu/api/publication/30339006 ID - 30339006 N1 - Department of Agricultural, Food and Environmental Sciences, Polytechnic University of Marche, via Brecce Bianche 10, Ancona, 60131, Italy Department of the Sciences of Agriculture, Food and Environment, University of Foggia, via Napoli 25, Foggia, 71122, Italy Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Científicas, Serrano 115 bis, Madrid, 28006, Spain Delaware Environmental Institute, University of Delaware, Interdisciplinary Science and Engineering (ISE) Laboratory, 221 Academy Street, Newark, DE 19716, United States Forest Sciences and Technology Center of Catalonia, Carretera St Llorenç de Morunys, km 2, Solsona, 25280, Spain Department of Plant and Soil Sciences, University of Delaware, Interdisciplinary Science and Engineering (ISE) Laboratory, 221 Academy Street, Newark, DE 19716, United States Export Date: 3 September 2019 CODEN: STEVA Correspondence Address: Zaccone, C.; Department of the Sciences of Agriculture, Food and Environment, University of Foggia, via Napoli 25, Italy; email: claudio.zaccone@unifg.it LA - English DB - MTMT ER - TY - JOUR AU - Jaballi, F. AU - Felhi, M. AU - Khelifi, M. AU - Fattah, N. AU - Zayani, K. AU - Abbes, N. AU - Elouadi, B. AU - Tlili, A. TI - Mineralogical and geochemical behavior of heated natural carbonate-apatite of the Ypresian series, Maknassy-Mezzouna basin, central Tunisia JF - CARBONATES AND EVAPORITES J2 - CARBONATE EVAPORITE VL - 34 PY - 2019 SP - 1689 EP - 1702 PG - 14 SN - 0891-2556 DO - 10.1007/s13146-019-00519-x UR - https://m2.mtmt.hu/api/publication/30764201 ID - 30764201 N1 - Georesources, Materials, Environment and Global Changes Laboratory, Science Faculty of Sfax, Sfax University, Sfax, Tunisia Eau-Energie-Environnement Laboratory, University of Sfax, Sfax, Tunisia Gafsa Phosphate Company, Research Center, Metlaoui, 2130, Tunisia Research Direction of Tunisian Chemical Group, Gabès, Tunisia Laboratory of Chemical Analysis Elaboration and Materials, Engineering (LEACIM), Université de La Rochelle, Avenue Michel Crépeau, La Rochelle Cedex 01, 17042, France Export Date: 13 August 2019 Correspondence Address: Felhi, M.; Georesources, Materials, Environment and Global Changes Laboratory, Science Faculty of Sfax, Sfax UniversityTunisia; email: mongi_felhi@yahoo.fr LA - English DB - MTMT ER - TY - JOUR AU - Jayawardana, D. T. AU - Madusanka, R. M. T. D. AU - Jayasinghe, R. M. N. P. K. AU - Adikaram, A. M. N. M. AU - Udagedara, D. T. TI - Sedimentary geochemistry of alluvial overburden in the primary gem deposit of Pelmadulla, Sri Lanka JF - JOURNAL OF THE NATIONAL SCIENCE FOUNDATION OF SRI LANKA J2 - J NATL SCI FOUND SRI VL - 47 PY - 2019 IS - 2 SP - 221 SN - 1391-4588 DO - 10.4038/jnsfsr.v47i2.9164 UR - https://m2.mtmt.hu/api/publication/30764268 ID - 30764268 N1 - Department of Forestry and Environmental Science, Faculty of Applied Science, University of Sri Jayewardenepura, Nugegoda, Sri Lanka Gem and Jewellery Research and Training Institute, Kaduwela, Sri Lanka Department ofPhysical Sciences, Faculty of Applied Sciences, South Eastern University, Samanthurai, Sri Lanka Faculty of Science and Technology, Uva Wellassa University, Badulla, Sri Lanka Export Date: 12 January 2023 Correspondence Address: Jayawardana, D.T.; Department of Forestry and Environmental Science, Nugegoda, Sri Lanka; email: daham@sci.sjp.ac.lk LA - English DB - MTMT ER - TY - JOUR AU - Li, K AU - Wang, P AU - Qian, J AU - Wang, C AU - Xing, L AU - Liu, J AU - Tian, X AU - Lu, B AU - Tang, W TI - Effects of sediment components and TiO2 nanoparticles on perfluorooctane sulfonate adsorption properties JF - JOURNAL OF SOILS AND SEDIMENTS J2 - J SOIL SEDIMENT VL - 19 PY - 2019 IS - 4 SP - 2034 EP - 2047 PG - 14 SN - 1439-0108 DO - 10.1007/s11368-018-2115-z UR - https://m2.mtmt.hu/api/publication/27641201 ID - 27641201 N1 - Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, China College of Environment, Hohai University, Nanjing, 210098, China Changjiang River Scientific Research Institute, Wuhan, China Cited By :9 Export Date: 12 January 2023 Correspondence Address: Qian, J.; College of Environment, China; email: hhuqj@hhu.edu.cn LA - English DB - MTMT ER - TY - JOUR AU - Radulescu, C. AU - Bucurica, I. A. AU - Bretcan, P. AU - Chelarescu, E. D. AU - Tanislav, D. AU - Dulama, I. D. AU - Stirbescu, R. M. AU - Teodorescu, S. TI - Complex investigation of unconsolidated sediments of Romanian Plain salt lake JF - ROMANIAN JOURNAL OF PHYSICS J2 - ROM J PHYS VL - 64 PY - 2019 IS - 3-4 PG - 13 SN - 1221-146X UR - https://m2.mtmt.hu/api/publication/30858532 ID - 30858532 AB - This study aims to determine the elemental composition and the morphological structure of salt lake sediments collected from the Romanian Plain, in order to characterize their origin and evolution. Sediment cores were collected from Movila Miresii Lake in August 2017. Volumetric sampling was continuously performed for the composite profiles with 1 cm resolution. The qualitatively and quantitatively determination elements distribution on the surface of samples and chemical composition, as well as the surface morphology of sediments was performed by Scanning Electron Microscopy coupled with Energy Dispersive Spectroscopy. The geochemical properties of sediments were achieved by Attenuated Total Reflectance - Fourier Transform Infrared Spectroscopy, which well-provide information on a wide range of organic and minerogenic components, (e.g., carbohydrates, humic substances, silicates and carbonates). This information is of particular interest for paleolimnological studies because lake sediments are commonly composed of a mixture of various organic and minerogenic compounds originating from the fossilization of tissues and skeletons of aquatic organisms and from the erosion of lake soils. Analysis for a suite of metals rather than just target anthropogenic metals (e.g., Pb, Cu, Zn, Mn, Cd, Fe, Cr, Al and Ni) was accomplished using Inductively Coupled Plasma Mass Spectrometry. High content of several elements including Fe, Ni, Cr, Al and Zn in sediment samples was correlated with their sources. In further studies, it is possible to be identified situations that are or not priori favorable for tracing of these elements using the isotopic approach. LA - English DB - MTMT ER - TY - JOUR AU - Király, Csilla AU - Sendula, Eszter AU - Szamosfalvi, Ágnes AU - Káldos, Réka AU - Kónya, Péter AU - Kovács, István János AU - Füri, Judit Izabella AU - Zsolt, Bendő AU - Falus, György TI - The relevance of dawsonite precipitation in CO2 sequestration in the Mihályi-Répcelak area, NW Hungary JF - GEOLOGICAL SOCIETY SPECIAL PUBLICATIONS J2 - GEOL SOC SPEC PUBL VL - 435 PY - 2018 IS - 1 SP - 405 EP - 418 PG - 14 SN - 0305-8719 DO - 10.1144/SP435.15 UR - https://m2.mtmt.hu/api/publication/3082983 ID - 3082983 N1 - Lithosphere Fluid Research Lab, Department of Petrology and Geochemistry, Eötvös University, Budapest, H-1117, Pazmány Péter setany 1/c, Budapest, Hungary Geological and Geophysical Institute of Hungary, H-1143, XIV., Stefánia út 14, Budapest, Hungary Export Date: 14 December 2020 Correspondence Address: Falus, G.; Lithosphere Fluid Research Lab, Department of Petrology and Geochemistry, Eötvös University, Budapest, H-1117, Pazmány Péter setany 1/c, Hungary; email: falus.gyorgy@mfgi.hu WoS:hiba:000460275100020 2021-10-07 10:16 befoglaló egyiknél nincsenek szerzők, befoglaló cím nem egyezik LA - English DB - MTMT ER - TY - JOUR AU - Gyollai, Ildikó AU - Polgári, Márta Piroska AU - Biró, Lóránt AU - Vigh, Tamás AU - Kovács, Tibor AU - Pál-Molnár, Elemér TI - Fossilized biomats as the possible source of high natural radionuclide content at the jurassic úrkút manganese ore deposit, Hungary JF - CARPATHIAN JOURNAL OF EARTH AND ENVIRONMENTAL SCIENCES J2 - CARPATH J EARTH ENVIRON SCI VL - 13 PY - 2018 IS - 2 SP - 477 EP - 487 PG - 11 SN - 1842-4090 DO - 10.26471/cjees/2018/013/041 UR - https://m2.mtmt.hu/api/publication/3351641 ID - 3351641 LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos AU - Fintor, Krisztián AU - Gyollai, Ildikó AU - Kereszty, Z AU - Szabó, Máté Zoltán AU - Szalai, Zoltán AU - Walter, Heléna TI - Shock heterogeneity and shock history of the recently found ordinary Csátalja chondrite in Hungary JF - GEOLOGICAL QUARTERLY J2 - GEOL Q VL - 62 PY - 2018 IS - 2 SP - 433 EP - 446 PG - 14 SN - 1641-7291 DO - 10.7306/gq.1416 UR - https://m2.mtmt.hu/api/publication/3386063 ID - 3386063 N1 - Research Centre for Astronomy and Earth Sciences, Konkoly Thege Miklos Astronomical Institute, Konkoly Thege Miklósút 15–17, Budapest, H-1121, Hungary University of Szeged, Vulcano Petrology and Geochemistry Research Group, Department of Mineralogy, Geochemistry and Petrology, Hungary Research Centre for Astronomy and Earth Sciences, Institute for Geological and Geochemical Research, Hungary International Meteorite Collectors Association (IMCA#6251), Hungary Research Centre for Astronomy and Earth Sciences, Geographical Institute, Hungary Eötvös Loránd University, Department of Environmental and Landscape Geography, Hungary Cited By :1 Export Date: 3 September 2019 Correspondence Address: Kereszturi, A.; Research Centre for Astronomy and Earth Sciences, Konkoly Thege Miklos Astronomical Institute, Konkoly Thege Miklósút 15–17, Hungary; email: kereszturi.akos@csfk.mta.hu LA - English DB - MTMT ER - TY - JOUR AU - Mroczkowska-Szerszen, Maja AU - Orzechowski, Mateusz TI - Infrared spectroscopy methods in reservoir rocks analysis-semiquantitative approach for carbonate rocks JF - NAFTA-GAZ J2 - NAFTA-GAZ VL - 74 PY - 2018 IS - 11 SP - 802 EP - 812 PG - 11 SN - 0867-8871 DO - 10.18668/NG.2018.11.04 UR - https://m2.mtmt.hu/api/publication/30513302 ID - 30513302 AB - Experimental results and methodology for mineral composition determination of reservoir rocks by means of Fourier Transformed Infrared Spectroscopy technique (FTIR) was a subject to present in the paper. The FTIR data were calibrated with use of X-ray diffraction and X-ray fluorescence (XRF) methods. This approach allows quantitative and semiquantitative analysis basing on use of statistical methods like PCR (Principal Component Regression) or PLS (Partial Least Squares) to calibrate FTIR ATR in purpose to create efficient and cost saving tool for quick screening analysis of reservoir rocks samples. The presented approach allows for calibration of FTIR ATR using statistical methods like PCR (Principal Component Regression) or PLS (Partial Least Squares) in order to create efficient and cost saving tool for quantitative and semi-quantitative analysis of reservoir rocks samples. In the paper, 18 surface carbonate rocks samples of limestone and dolomite type belonging to the Paleozoic and Mesozoic age from the Krakow-Czestochowa Upland and Main Dolomite from Fore-Sudetic Monocline were analyzed. FTIR results were qualitatively described by analysis together with tentative assignments of their molecular bonds vibrations assignments are presented and a spectra interpretation for typical carbonates associated minerals. The technical constrains of the methodology resulting from proper method calibration and metal oxide analysis limitations were also discussed. Furthermore the behavior of the PCR and PLS algorithms in case of monomineral samples was commented and the necessity of additional qualitative spectra verification was indicated in this case for the final assessment of quantitative data quality. The quantitative results of FTIR analysis were compared with X-ray diffraction (XRD) quantitative data, part of them has been used as validation data. The accordance of the data series was better than 6% for each analyzed mineral phases excluding the outliers indicated by the analytical algorithm. The method was also successfully applied to the quantitative analysis of shale rocks, however, this part of the research will be presented in a separate paper. LA - English DB - MTMT ER - TY - JOUR AU - Qian, Jin AU - Li, Kun AU - Wang, Peifang AU - Wang, Chao AU - Liu, Jingjing AU - Tian, Xin AU - Lu, Bianhe AU - Guan, Wenyi TI - Unraveling adsorption behavior and mechanism of perfluorooctane sulfonate (PFOS) on aging aquatic sediments contaminated with engineered nano-TiO2 JF - ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH J2 - ENVIRON SCI POLLUT R VL - 25 PY - 2018 IS - 18 SP - 17878 EP - 17889 PG - 12 SN - 0944-1344 DO - 10.1007/s11356-018-1984-4 UR - https://m2.mtmt.hu/api/publication/27565787 ID - 27565787 N1 - Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, China College of Environment, Hohai University, Nanjing, 210098, China Cited By :3 Export Date: 3 September 2019 CODEN: ESPLE Correspondence Address: Qian, J.; College of Environment, Hohai UniversityChina; email: hhuqj@hhu.edu.cn LA - English DB - MTMT ER - TY - CHAP AU - Romanov, V ED - Romanov, V TI - Advanced experimental techniques in geochemistry T2 - Greenhouse gases and clay minerals : enlightening down-to-Earth road map to basic science of clay-greenhouse gas interfaces PB - Springer Netherlands CY - Cham (Németország) SN - 9783319126609 T3 - Green Energy and Technology, ISSN 1865-3529 PY - 2018 SP - 77 EP - 94 PG - 18 DO - 10.1007/978-3-319-12661-6_5 UR - https://m2.mtmt.hu/api/publication/32808633 ID - 32808633 N1 - Export Date: 12 January 2023 Correspondence Address: Romanov, V.; U.S. Department of Energy, United States; email: romanov@netl.doe.gov LA - English DB - MTMT ER - TY - JOUR AU - Gyollai, Ildikó AU - Kereszturi, Ákos AU - Kereszty, Zs. AU - Szabó, Máté Zoltán AU - Chatzitheodoridis, E. TI - Shock-induced alterations in the recently found H chondrite Csátalja meteorite and its implications JF - CENTRAL EUROPEAN GEOLOGY J2 - CENT EUR GEOL VL - 60 PY - 2017 IS - 2 SP - 173 EP - 200 PG - 28 SN - 1788-2281 DO - 10.1556/24.60.2017.007 UR - https://m2.mtmt.hu/api/publication/3266347 ID - 3266347 AB - Shock-driven annealing of pyroxene and shock deformation of olivine were analyzed in a recently found H chondrite called Csátalja. The most characteristic infrared (IR) spectral shape of shock-annealed sub-grained pyroxene was identified: the strongest peak occurs at 860 cm−1 with a smaller shoulder at 837−840 cm−1, and small bands are at 686, 635−638, and 1,044−1,050 cm−1. The appearance of forbidden bands in pyroxene and shift of band positions to a lower wave number in olivines clearly demonstrate the crystal lattice disordering due to shock metamorphism. The shock annealing produced mixed dark melt along fractures, which consists of feldspar−pyroxene and olivine−pyroxene melt. The dark shock melt at sub-grain boundaries of shocked pyroxenes and along fracture of pyroxenes is characterized by elevated Ca, Na, and Al content relative to its environment, detected by element mapping. So far, shock deformation of pyroxene and olivine was not studied by IR spectroscopy; this method has turned out to be a powerful tool in identifying the mixed composition of shock melt minerals. Further study of shock annealing of minerals, together with the context of shock melting at sub-grain boundaries, will provide a better understanding of the formation of high P–T minerals. http://akademiai.com/doi/pdf/10.1556/24.60.2017.007 LA - English DB - MTMT ER - TY - JOUR AU - Henry, D G AU - Watson, J S AU - John, C M TI - Assessing and calibrating the ATR-FTIR approach as a carbonate rock characterization tool JF - SEDIMENTARY GEOLOGY J2 - SEDIMENT GEOL VL - 347 PY - 2017 SP - 36 EP - 52 PG - 17 SN - 0037-0738 DO - 10.1016/j.sedgeo.2016.07.003 UR - https://m2.mtmt.hu/api/publication/26108224 ID - 26108224 N1 - Department of Earth Science and Engineering and Qatar Carbonate and Carbon Storage Research Centre, Imperial College London, London, SW7 2AZ, United Kingdom Department of Earth Science and Engineering, Imperial College London, London, SW7 2AZ, United Kingdom Cited By :15 Export Date: 3 September 2019 Correspondence Address: Henry, D.G.; Department of Earth Science and Engineering and Qatar Carbonate and Carbon Storage Research Centre, Imperial College LondonUnited Kingdom; email: dg_henry@hotmail.co.uk LA - English DB - MTMT ER - TY - THES AU - Király, Csilla TI - Mihályi-Répcelak természetes CO2-előfordulás környezetgeokémiai vizsgálata PB - Eötvös Loránd Tudományegyetem (ELTE) PY - 2017 SP - 128 DO - 10.15476/ELTE.2017.032 UR - https://m2.mtmt.hu/api/publication/3321895 ID - 3321895 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Oancea, AV AU - Bodi, G AU - Nica, V AU - Ursu, LE AU - Drobota, M AU - Cotofana, C AU - Vasiliu, AL AU - Simionescu, BC AU - Olaru, M TI - Multi-analytical characterization of Cucuteni pottery JF - JOURNAL OF THE EUROPEAN CERAMIC SOCIETY J2 - J EUR CERAM SOC VL - 37 PY - 2017 IS - 15 SP - 5079 EP - 5098 PG - 20 SN - 0955-2219 DO - 10.1016/j.jeurceramsoc.2017.07.018 UR - https://m2.mtmt.hu/api/publication/26951879 ID - 26951879 N1 - “Petru Poni” Institute of Macromolecular Chemistry, 41A Gr. Ghica Voda Alley, Iasi, 700487, Romania Institute of Archaeology Iasi of the Romanian Academy, 6 Codrescu Street, Iasi, 700479, Romania “Alexandru I. Cuza” University, Faculty of Physics, 11 Carol I Boulevard, Iasi, 700506, Romania Department of Natural and Synthetic Polymers, “Gheorghe Asachi” Technical University of Iasi, 67 D. Mangeron Bld., Iasi, 700050, Romania Cited By :4 Export Date: 3 September 2019 Correspondence Address: Olaru, M.; “Petru Poni” Institute of Macromolecular Chemistry, 41A Gr. Ghica Voda Alley, Romania; email: olaruma@icmpp.ro LA - English DB - MTMT ER - TY - JOUR AU - Trabelsi, W AU - Tlili, A TI - Phosphoric acid purification through different raw and activated clay materials (Southern Tunisia) JF - JOURNAL OF AFRICAN EARTH SCIENCES J2 - J AFR EARTH SCI VL - 129 PY - 2017 SP - 173 EP - 200 PG - 28 SN - 1464-343X DO - 10.1016/j.jafrearsci.2017.02.008 UR - https://m2.mtmt.hu/api/publication/26385511 ID - 26385511 N1 - Cited By :3 Export Date: 3 September 2019 Correspondence Address: Trabelsi, W.; Sfax University, Faculty of Sciences, Earth Sciences Department, GEOGLOB Laboratory (LR13ES23), Soukra Road, Km 3.5, Tunisia; email: trabelsii_wafa@yahoo.fr LA - English DB - MTMT ER - TY - JOUR AU - Udvardi, Beatrix AU - Kovács, István János AU - Fancsik, Tamás AU - Kónya, Péter AU - Batori, M AU - Stercel, F AU - Falus, György AU - Szalai, Zoltán TI - Effects of particle size on the attenuated total reflection spectrum of minerals JF - APPLIED SPECTROSCOPY J2 - APPL SPECTROSC VL - 71 PY - 2017 IS - 6 SP - 1157 EP - 1168 PG - 12 SN - 0003-7028 DO - 10.1177/0003702816670914 UR - https://m2.mtmt.hu/api/publication/3238351 ID - 3238351 N1 - Geological and Geophysical Institute of Hungary, Budapest, Hungary Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Budapest, Hungary Department of Environmental and Landscape Geography, Eötvös University, Budapest, Hungary Cited By :11 Export Date: 3 September 2019 CODEN: APSPA Correspondence Address: Udvardi, B.; Geological and Geophysical Institute of Hungary, Stefánia u. 14, Hungary; email: udvardi.beatrix@mfgi.hu AB - This study focuses on particle size effect on monomineralic powders recorded using attenuated total reflection Fourier transform infrared (ATR FT-IR) spectroscopy. Six particle size fractions of quartz, feldspar, calcite, and dolomite were prepared (<2, 2-4, 4-8, 8-16, 16-32, and 32-63 mu m). It is found that the width, intensity, and area of bands in the ATR FT-IR spectra of minerals have explicit dependence on the particle size. As particle size increases, the intensity and area of IR bands usually decrease while the width of bands increases. The band positions usually shifted to higher wavenumbers with decreasing particle size. Infrared spectra of minerals are the most intensive in the particle size fraction of 2-4 mu m. However, if the particle size is very small (<2 mu m), due to the wavelength and penetration depth of the IR light, intensity decreases. Therefore, the quantity of very fine-grained minerals may be underestimated compared to the coarser phases. A nonlinear regression analysis of the data indicated that the average coefficients and indices of the power trend line equation imply a very simplistic relationship between median particle diameter and absorbance at a given wavenumber. It is concluded that when powder samples with substantially different particle size are compared, as in regression analysis for modal predictions using ATR FT-IR, it is also important to report the grain size distribution or surface area of samples. The band area of water (3000-3620cm(-1)) is similar in each mineral fraction, except for the particles below 2 mu m. It indicates that the finest particles could have disproportionately more water adsorbed on their larger surface area. Thus, these higher wavenumbers of the ATR FT-IR spectra may be more sensitive to this spectral interference if the number of particles below 2 mu m is considerable. It is also concluded that at least a proportion of the moisture could be very adhesive to the particles due to the band shift towards lower wavenumbers in the IR range of 3000-3620cm(-1). LA - English DB - MTMT ER - TY - JOUR AU - Aksel'rod, S M TI - Primenenie infrakrasnoj spektroskopii v petrofizičeskih issledovaniâh (po materialam zarubežnyh publikacij) JF - Karotažnik J2 - Karotažnik VL - 1 (259) PY - 2016 SP - 55 EP - 84 SN - 1810-5599 UR - https://m2.mtmt.hu/api/publication/26958647 ID - 26958647 LA - Russian DB - MTMT ER - TY - JOUR AU - Király, Csilla AU - Szamosfalvi, Ágnes AU - Zilahi-Sebess, László József AU - Kónya, Péter AU - Kovács, István János AU - Sendula, Eszter AU - Szabó, Csaba AU - Falus, György TI - Caprock analysis from the Mihályi-Répcelak natural CO2 occurrence, Western Hungary JF - ENVIRONMENTAL EARTH SCIENCES J2 - ENVIRON EARTH SCI VL - 75 PY - 2016 IS - 8 SN - 1866-6280 DO - 10.1007/s12665-016-5399-6 UR - https://m2.mtmt.hu/api/publication/3055776 ID - 3055776 N1 - Lithosphere Fluid Research Lab, Eötvös University, Pázmány Péter Sétány 1/c, Budapest, 1117, Hungary Geological and Geophysical Institute of Hungary, 14. Stefánia út, Budapest, 1143, Hungary Cited By :6 Export Date: 3 September 2019 Correspondence Address: Szabó, C.; Lithosphere Fluid Research Lab, Eötvös University, Pázmány Péter Sétány 1/c, Hungary; email: cszabo@elte.hu AB - Caprock integrity is one of the most important factors regarding the long-term safe underground storage of CO2. As a result of geochemical reactions among the caprock mineralogy and CO2 saturated pore water, the physical properties of caprock such as porosity, permeability may change, which could affect its sealing capacity. Natural CO2 occurrences can help to understand these long term reactions under storage conditions on geological timescale. Our study area, the Mihályi-Répcelak natural CO2 occurrence, is believed to be leak-proof system on geological timescale. To identify and understand the mineral reactions in the caprocks we applied XRD, FTIR-ATR and SEM analysis of drill cores derived from the study area. The petrophysical properties of the studied rock samples were determined from the interpretation of geophysical well-logs and grain size distribution. The effective porosity (~4 %), permeability (0.026 mD) and clay content (~80 %) of the drill cores imply that the studied clayey caprocks represent an adequate physical barrier to the CO2. Our analytical results show that dawsonite has formed within the caprocks. In most cases the dawsonite crystallized after albite dissolution. This implies that CO2 or CO2-saturated brine can penetrate into the caprock resulting in mineral reactions and most likely changing the porosity and permeability of the sealing lithology. On the other hand the caprock may react as a geochemical buffer for the CO2 and, at least part of it, can be stored within the caprock as solid phase, thereby increasing the storage capacity of the system. © 2016, Springer-Verlag Berlin Heidelberg. LA - English DB - MTMT ER - TY - JOUR AU - Szabó-Krausz, Zsuzsanna AU - Hellevang, H AU - Király, Csilla AU - Sendula, Eszter AU - Kónya, Péter AU - Falus, György AU - Török, Szabina AU - Szabó, Csaba TI - Experimental-modelling geochemical study of potential CCS caprocks in brine and CO2-saturated brine JF - INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL J2 - INT J GREENH GAS CON VL - 44 PY - 2016 SP - 262 EP - 275 PG - 14 SN - 1750-5836 DO - 10.1016/j.ijggc.2015.11.027 UR - https://m2.mtmt.hu/api/publication/2985787 ID - 2985787 AB - The work presented in this paper is a part of the evaluation of the saline aquifers of the Pannonian Basin for CO2 geological storage in Hungary. The presented results evaluate the long-term caprock behaviour for the effect of a possible CO2 injection and are relevant in case of other similar storage complexes as well. Three potential core samples were selected, crushed and their one-two month long laboratory batch experiments were carried out in CO2-free and CO2 environments. Solution composition of the reacted brine and mineral composition of the reacted rock samples were analyzed. Furthermore, kinetic geochemical modelling was carried out in PHREEQC to better understand the observed changes during experiment. Reference model simulations for reservoir conditions (lower T) have been also performed. In the rocks, dissolution of the carbonate minerals was observed and also model indications were found for feldspar dissolution, which processes lead to secondary carbonate and clay mineral formation. The effect of CO2 is primarily to increase dissolution rates of the mineral transformation reactions. Boehmite and smectite formation can also be expected among which smectite is considered highly advantageous. LA - English DB - MTMT ER - TY - JOUR AU - Udvardi, Beatrix AU - Kovács, István János AU - Szabó, Csaba AU - Falus, György AU - Újvári, Gábor AU - Besnyi, Anikó Mária AU - Bertalan, Éva AU - Budai, F AU - Horváth, Zoltán TI - Origin and weathering of landslide material in a loess area: a geochemical study of the Kulcs landslide, Hungary JF - ENVIRONMENTAL EARTH SCIENCES J2 - ENVIRON EARTH SCI VL - 75 PY - 2016 IS - 19 PG - 19 SN - 1866-6280 DO - 10.1007/s12665-016-6103-6 UR - https://m2.mtmt.hu/api/publication/3122949 ID - 3122949 AB - Geochemical characteristics of sediments are responses to physical and chemical alteration in landslides. However, consequences of in situ interactions associated with landslides are difficult to distinguish from those related to long-term weathering in young soft sediments such as loess. In this study, geochemical characteristics of the Kulcs landslide in Hungary are studied to identify the provenance of the loess–paleosol–red clay sequence and geochemical signatures that can potentially be attributed to the effects of landsliding. Results indicate that sliding is largely initiated by the lithological changes within the landslide body. Sediments above the sliding zone closely resemble the non-slipped Pleistocene old loess deposits from Hungary. It is also confirmed that the sliding zone develops in old paleosols in the loess sequence and red clays at its base which are all characterized by the enrichment of Al, K, Na, H2O and considerable depletion in Ca and Mg associated with carbonates. Altogether, these geochemical characteristics indicate that chemical weathering trend of unconsolidated landslide sediments is slightly modified by the redistribution of carbonates and decomposition of plagioclase. It is assumed that the distribution of Mn and Ba is modified by the water–sediment interaction in the landslide. LA - English DB - MTMT ER - TY - JOUR AU - Kovács, István János AU - Udvardi, Beatrix AU - Falus, György AU - Földvári, M AU - Fancsik, Tamás AU - Kónya, Péter AU - Bodor, Emese Réka AU - Mihály, Judith AU - Németh, Csaba AU - Czirják, G AU - Ősi, Attila AU - Vargáné, Barna Zs AU - Bhattoa Harjit, Pál AU - Szekanecz, Zoltán AU - Turza, S TI - AZ ATR FTIR spektrometria gyakorlati alkalmazása néhány - elsősorban földtani - esettanulmány bemutatásával JF - FÖLDTANI KÖZLÖNY J2 - FÖLDTANI KÖZLÖNY VL - 145 PY - 2015 IS - 2 SP - 173 EP - 192 PG - 20 SN - 0015-542X UR - https://m2.mtmt.hu/api/publication/2919939 ID - 2919939 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Udvardi, Beatrix AU - Kovács, István János AU - Kónya, Péter AU - Vatai, J AU - Koloszár, László AU - Fedor, Ferenc AU - Ács, Péter AU - Mihály, Judith AU - Németh, Csaba AU - Deák, Zsuzsa Villő AU - Füsi, B AU - Szalai, Zoltán AU - Szabó, Csaba AU - Falus, György AU - Fancsik, Tamás TI - A felszínmozgás zónájában előforduló üledékes kőzetek ásványos összetételének és fizikai tulajdonságainak vizsgálata Kulcs területén [Physical properties and mineral composition of sediments from sliding zone at Kulcs area] JF - MAGYAR GEOFIZIKA J2 - MAGYAR GEOFIZIKA VL - 55 PY - 2014 IS - 3 SP - 121 EP - 133 PG - 13 SN - 0025-0120 UR - https://m2.mtmt.hu/api/publication/2820723 ID - 2820723 LA - Hungarian DB - MTMT ER -