The effect of sample preparation on metal determination in soil by FAAS |
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Authors: | Zofia Kowalewska E Bulska and A Hulanicki |
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Institution: | (1) Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland, PL;(2) Research – Development Center for Refinery Industry, Chemików 5, 09-411 Plock, Poland, PL |
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Abstract: | Different methods for the determination of several metals in soils by flame atomic absorption spectrometry (FAAS) were investigated.
Different procedures for total dissolution of soil: I – HF+HClO4, H3BO3, HCl digestion (conventional heating), II – HF+HClO4, H3BO3 digestion followed by fusion with LiBO2 (conventional heating) and III – HF+HCl+HNO3, H3BO3 digestion (microwave heating), as well as a leaching procedure with HNO3+HClO4, HCl were tested and compared. For quality assessment, the certified reference material S-1 soil was used. For most of the
investigated metals, the best accuracy and precision were achieved when the procedure I or III were used. The developed procedure
was applied to the analysis of soil samples from crude oil refinery and dump of petroleum origin wastes regions.
Received: 22 Dezember 1997 / Revised: 9 February 1998 / Accepted: 12 February 1998 |
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