Microwave-assisted vapor-phase acid digestion of cellulose nitrate filters for elemental analysis of airborne dust samples

Czegeny, Z [Czégény, Zsuzsanna (Makromolekulák ké...), szerző]; Berente, B; Ovari, M [Óvári, Mihály (Környezetkémia és...), szerző] Környezetkémiai és Bioanalitikai Laboratórium (... (ELTE / TTK / KI); Tapia, MG; Zaray, G [Záray, Gyula (Analitikai kémia,...), szerző] Környezetkémiai és Bioanalitikai Laboratórium (... (ELTE / TTK / KI)

Angol nyelvű Tudományos Szakcikk (Folyóiratcikk)
Megjelent: MICROCHEMICAL JOURNAL 0026-265X 59 (1) pp. 100-106 1998
    Azonosítók
    Szakterületek:
      A microwave-assisted vapor-phase digestion procedure was developed for microanalytical investigation of airborne dust samples collected on cellulose nitrate filters. The decomposition of a filter placed in a quartz microvial was carried out by oxidation using a mixture of HNO3 and H2O2 in a closed Teflon bomb. To avoid charring of the filter the temperature was increased from 25 to 180 degrees C in Eve steps over 97 min. The decomposition rate of cellulose nitrate amounted to 95%. Recovery of Ni, V, Pb, Pt, and Pd ranged from 85 to 94%. The applicability of this sample preparation procedure resulting in 1 ml solution was demonstrated by investigation of airborne dust samples collected in the Clark tunnel in Budapest using total reflection X-ray fluorescence spectrometry. (C) 1998 Academic Press.
      Hivatkozás stílusok: IEEEACMAPAChicagoHarvardCSLMásolásNyomtatás
      2020-11-27 10:14