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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

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

Davidson, C M and Wilson, Lorna E. and Ure, A 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

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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.