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 language | English |
|---|---|
| Pages (from-to) | 134-136 |
| Number of pages | 3 |
| Journal | Fresenius' Journal of Analytical Chemistry |
| Volume | 363 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Jan 1999 |
Keywords
- cadmium
- freshwater sediment
- three-stage sequential extraction procedure