Overview of the use of leaching/extraction tests for risk assessment of trace metals in contaminated soils and sediments

被引：337

作者：

Sahuquillo, A ^{[1
]}

Rigol, A ^{[1
]}

Rauret, G ^{[1
]}

机构：

[1] Univ Barcelona, Dept Quim Analit, E-08028 Barcelona, Spain

来源：

TRAC-TRENDS IN ANALYTICAL CHEMISTRY | 2003年 / 22卷 / 03期

关键词：

leaching/extraction tests; mobility; risk assessment; sequential extraction procedures; single-extraction procedures; soils; sediments; trace metals;

D O I：

10.1016/S0165-9936(03)00303-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Comparison of the information obtained from the application of leaching/ extraction procedures to contaminated soils and sediments is required to make the most appropriate choice for studying a given metal. In this article, the information obtained for Cd, Cr, Cu, Ni, Pb and Zn, when applying various single extraction and sequential extraction procedures, is critically assessed for contaminated samples with distinct origins and characteristics. The single-extraction procedures comprised the application of mild (CaCl2 and NaNO3) and acidic (CH3COOH) extractants and complexing agents (EDTA and DTPA). The original and modified BCR three-step sequential extraction procedures are also compared. Finally, useful criteria are proposed for the selection of leaching/extraction tests in certain scenarios. (C) 2003 Published by Elsevier Science B.V.

引用

页码：152 / 159

页数：8

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