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

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

Research output: Contribution to journalArticle

48 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)134-136
Number of pages3
JournalFresenius' Journal of Analytical Chemistry
Volume363
Issue number1
DOIs
Publication statusPublished - 1 Jan 1999

Keywords

  • cadmium
  • freshwater sediment
  • three-stage sequential extraction procedure

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