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

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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 determined by electrothermal atomic absorption spectrometry, using direct calibration with reagent-matched standard solutions.

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Authors and Affiliations

  1. Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland, UK, , , , , , GB

    C. M. Davidson, Lorna E. Wilson & Allan M. Ure

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  1. C. M. Davidson
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  2. Lorna E. Wilson
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  3. Allan M. Ure
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Received: 18 March 1998 / Revised: 22 June 1998 / Accepted: 26 June 1998

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Davidson, C., Wilson, L. & Ure, A. Effect of sample preparation on the operational speciation of cadmium and lead in a freshwater sediment. Fresenius J Anal Chem 363, 134–136 (1999). https://doi.org/10.1007/s002160051159

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  • DOI: https://doi.org/10.1007/s002160051159

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