ISSN:
1432-1130
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Chemical sequential extraction for metal fractionation in sewage sludge using the Tessier method has been accelerated by ultrasound. The two sequential extraction schemes (conventional and ultrasound accelerated) were compared in terms of extraction efficiency, precision, treatment time and partitioning patterns of metals. Extractable contents of Cu, Cr, Ni, Pb and Zn were measured by flame atomic absorption spectrometry, and the analytical results obtained by the two procedures were statistically compared (P = 0.95). No significant differences were found in the two first fractions (i.e. exchangeable and carbonate-bound), however, in the third and fourth extracts (i.e. Fe-Mn oxides-bound and organic matter-bound) the extraction capability of the two methods differed significantly.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s002160051269
Permalink