Effect of sample preparation on the operational speciation of cadmium and lead in a freshwater sediment

被引：42

作者：

Davidson, CM ^{[1
]}

Wilson, LE ^{[1
]}

Ure, AM ^{[1
]}

机构：

[1] Univ Strathclyde, Dept Pure & Appl Chem, Glasgow G1 1XL, Lanark, Scotland

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1999年 / 363卷 / 01期

关键词：

D O I：

10.1007/s002160051159

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The three-stage sequential extraction procedure recommended by BCR has been applied in the operational speciation of cadmium and lead in a relatively unpolluted freshwater sediment, following various types of sample pre-treatment. Changes in speciation occurred when the sediment was air-dried, oven-dried or frozen. Cadmium speciation was particularly perturbed by freezing, whilst lead was more affected by oven-drying. Metals were deter mined by electrothermal atomic absorption spectrometry, using direct calibration with reagent-matched standard solutions.

引用

页码：134 / 136

页数：3

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