Study of phosphate sorption of soils by radioactive tracer method

Kónya, József [Kónya, József (Radiokémia), szerző]; Buzetzky, Dóra [Buzetzky, Dóra Beáta (környezettudomány), szerző]; Kovács, Eszter Mária [Kovács, Eszter Mária (Kémia), szerző]; M., Nagy Noémi [M. Nagy, Noémi (Környezettudomány), szerző]

Angol nyelvű Tudományos Absztrakt / Kivonat (Egyéb konferenciaközlemény)
    Azonosítók
    • MTMT: 30672815
    Phosphate fertilizers are widely applied in modern agriculture. The phosphate supplies, however, are rather limited, so the economical application of phosphate fertilizers is essential. Phosphate anions react with the different soil components, different interfacial and chemical reaction occur, a part of them sorb phosphate very tightly. The ratio of the sorbed phosphate species can be studied by heterogeneous isotope exchange, the portion of utilized by plants can be determined in this way. Unfortunately, the models applied in the literature for the treatment of heterogeneous isotope exchange base on incorrect principles. The ratio of these species on some Hungarian soil types was studied by radioactive tracer method using 32P isotope as phosphate ion. The effect of soil type, phosphate quantity, incubation time and plant growing was studied. The ratio of weakly sorbed phosphate can be studied by heterogeneous isotope exchange; the quantity of water soluble/weakly sorbed phosphate as well as the transport rate of phosphate in a steady state between the soil and soil solution was determined. The evaluation was made by a correct thermodynamic and mathematical model for the evaluation of the heterogeneous isotope exchange.
    Hivatkozás stílusok: IEEEACMAPAChicagoHarvardCSLMásolásNyomtatás
    2021-10-26 16:11