首页> 外文期刊>Geochemistry: Exploration, Environment, Analysis >Evaluation of a method for identification of host physico-chemical phases for trace metals and measurement of their solid-phase partitioning in soil samples by nitric acid extraction and chemometric mixture resolution
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Evaluation of a method for identification of host physico-chemical phases for trace metals and measurement of their solid-phase partitioning in soil samples by nitric acid extraction and chemometric mixture resolution

机译:评价一种用于识别痕量金属的宿主理化相的方法,以及通过硝酸萃取和化学计量混合拆分测定其在土壤样品中的固相分配的方法

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摘要

A sequential extraction methodology, designed to measure the solid phase partitioning of metals in soils and sediments, is described. The method uses centrifugation to pass increasing concentrations of HNO3 through the sample, followed by ICP-AES analysis of major and trace elements of the extracts. A data-processing algorithm is used to identify the number of physico-chemical components extracted, their composition and the proportion of each in each extract. The algorithm has been successfully tested on a synthetic data set and the combination of the extraction methodology and data-processing algorithm have been tested on a contaminated soil sample (NIST SRM 2710).
机译:描述了一种用于测量土壤和沉积物中金属的 固相分配的连续提取方法,该方法 。该方法通过离心将HNO 3 的递增浓度通过样品,然后对萃取物中的主要和痕量元素进行ICP-AES 分析。 。数据处理 算法用于识别提取的物理化学成分 的数量,组成和每种提取物中 的比例。该算法已在合成数据集上成功进行了 的测试,提取 方法和数据处理算法的组合已在受污染的 上进行了测试土壤样品(NIST SRM 2710)。

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