| Accumulation of cadmium by bivalves in the Pacific Northwest |
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| 作者姓名： | Leah I. Bendell-Young |
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| 作者单位： | Simon Fraser University, Biological Sciences, British Columbia, Canada |
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| 摘 要： | Bivalves （mussels, scallops, oysters）, from the Pacific Northwest coast of British Columbia, Canada, contain high levels of cadmium, in some cases exceeding 7 μg/g wet weight of tissue. We have for the past 5 years, attempted to determine the source of this cadmium to these filter-feeding invertebrates, with our objective being that we would then be able to advise where bivalves could be cultured for human consumption such that cadmium accumulation by the bivalve was minimized. Our studies have indicated that there are distinct regional and temporal variations in bivalve cadmium residues. Some patterns in cadmium accumulation did occur, e.g. for bivalves located on the most outer westcoast of British Columbia, cadmium residues demonstrated some seasonal dependence. In general, however, variations could not be readily ascribed to food sources （oceanic versus terrestrial）, or to abiotic factors such as salinity and turbidity. Cadmium residues in oysters were negatively correlated with temperature supportive of a seasonal influence on measured cadmium concentrations.
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| 关 键 词： | 镉 堆积作用 双壳 牡蛎 太平洋 古生物 |
Accumulation of cadmium by bivalves in the Pacific Northwest |
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| Leah I. Bendell-Young.Accumulation of cadmium by bivalves in the Pacific Northwest[J].Chinese Journal of Geochemistry,2006,25(B08):72-72. |
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| Abstract: | |
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| Keywords: | cadmium accumulation bivalve oysters human health |
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