$Application of sequential extraction with supercritical CO(2), subcritical H(2)O, and an H(2)O/CO(2) mixture for estimation of environmentally mobile heavy metal fractions in sediments$

Application of sequential extraction with supercritical CO(2), subcritical H(2)O, and an H(2)O/CO(2) mixture for estimation of environmentally mobile heavy metal fractions in sediments

Results from use of a new isolation procedure based on sequential extraction with supercritical CO(2), subcritical H(2)O, and an H(2)O/CO(2) mixture in the same supercritical fluid extractor have been compared with results from the BCR-recommended three-step sequential extraction procedure. The new...

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Veröffentlicht in:	Analytical and bioanalytical chemistry 2002-04, Vol.373 (8), p.863
Hauptverfasser:	Heltai, G, Fehér, B, Percsich, K, Barabás, B, Fekete, I
Format:	Artikel
Sprache:	eng
Schlagworte:	Carbon Dioxide - chemistry Environmental Pollutants - analysis Geologic Sediments - chemistry Metals, Heavy - analysis Reference Standards Water - chemistry
Online-Zugang:	Volltext
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Zusammenfassung:	Results from use of a new isolation procedure based on sequential extraction with supercritical CO(2), subcritical H(2)O, and an H(2)O/CO(2) mixture in the same supercritical fluid extractor have been compared with results from the BCR-recommended three-step sequential extraction procedure. The new procedure gives more detailed information about environmentally mobile fractions (water-soluble, bicarbonate-forming), and in less time (5-6 h), than the BCR procedure.
ISSN:	1618-2642