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

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Davidson, C M and Wilson, Lorna E. and Ure, Allan M . (1999) Effect of sample preparation on the operational speciation of cadmium and lead in a freshwater sediment. Fresenius' Journal of Analytical Chemistry, 363 (1). pp. 134-136. ISSN 0937-0633 (https://doi.org/10.1007/s002160051159)

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Abstract

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.

ORCID iDs

Davidson, C M ORCID logoORCID: https://orcid.org/0000-0002-8045-3530, Wilson, Lorna E. and Ure, Allan M .;
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