Overview of the use of leaching/extraction tests for risk assessment of trace metals in contaminated soils and sediments
Overview of the use of leaching/extraction tests for risk assessment of trace metals in contaminated soils and sediments
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DOI：
10.1016/s0165-9936(03)00303-0
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发表时间：
2003-03
期刊：
影响因子：
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通讯作者：
À. Sahuquillo;A. Rigol;G. Rauret
中科院分区：
文献类型：
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作者：
À. Sahuquillo;A. Rigol;G. Rauret
需要对从对受污染土壤和沉积物采用沥滤/萃取程序中获得的信息进行比较，以便为研究某一特定金属作出最适当的选择。在这篇文章中，获得的信息镉，铬，铜，镍，铅和锌，当应用各种单一的提取和连续提取程序，严格评估污染的样品具有不同的来源和特点。单一萃取程序包括应用温和（CaCl 2和NaNO 3）和酸性（CH 3COOH）萃取剂和络合剂（EDTA和DTPA）。对改进的BCR三步连续萃取法和原BCR三步连续萃取法进行了比较。最后，有用的标准，提出了在某些情况下选择浸出/提取试验。
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 (CaCl2and 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.