Cadmium uptake from cadmium-spiked sediments by four freshwater invertebrates
- Univ. of Guelph, Ontario (Canada)
In studies of metal contaminated fresh waters and sediments, the unionid bivalve Elliptio complanata is commonly used as a bioaccumulator. However, the use of only single species for accumulation studies may be inappropriate. In an attempt to identify other organisms that may be useful for assessing the pollution status of freshwater sediments, cadmium concentrations of four common benthic organisms exposed to cadmium-spiked sediments were examined. Organisms that accumulate cadmium to relatively higher levels are the most useful for analysis and detection. Further, organisms that have body concentrations of cadmium that are more highly correlated with sediment concentrations will also be more useful for assessing the pollution status of specific locations. Cadmium was chosen because it is accumulated by aquatic organisms such as crustaceans, insects, and molluscs, and can become toxic to aquatic life. Also, anthropogenic sources are known that can accumulate in freshwater and sediments to excessive levels.
- OSTI ID:
- 7206315
- Journal Information:
- Bulletin of Environmental Contamination and Toxicology; (United States), Journal Name: Bulletin of Environmental Contamination and Toxicology; (United States) Vol. 47:1; ISSN 0007-4861; ISSN BECTA
- Country of Publication:
- United States
- Language:
- English
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