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实验通过测定泥蚶(Arca granosa Linnus)血液和软体组织中Cd,Pl和Cu的含量,讨论泥蚶对这三种金属的富集能力和体内分布,结果表明,金属在血液和软体组织中的浓缩系数高低顺序为:Cd>Cu>Pb,且Cu和Pb的浓缩系数值接近,体内分布相似,有别于Cd;血液浓缩系数可反映出软体组织的富集能力,由海水铅致毒实验表明,血液Pb浓度受环境海水Pb浓度的支配并随时间变化;海水铅致毒浓度1-100μg/l,泥蚶血液和软体组织中Pb含量随海水Pb浓度的增加而升高,三者之间具指数相关. 相似文献
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This paper explores the accumulations ana distributions of Cd, Pb and Cu in clam Area granosa through determining their contents in Dlood and soft parts. The results show an order of concentration factors for these metals therein as: Cd>Cu>Pb; the values of concentration factors and the patterns of distribution are similar for Cu and Pb but different from Cd. Concentration factors in blood can reflect the enrichement abilities of soft parts. Exposure experiments have indicated that the Pb level in blood is controlled by Pb concentrations in surrouding seawater, changing with time, that the Pb cocentration causing poisoning in the seawater is 1-100 μg/1, and that the Pb content in blood and soft parts of Area granosa increases with that of Pb increasing in seawater. There exist relationships of double logatithmic concentrations for Pb among the three mediums. 相似文献
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This paper explores the accumulations ana distributions of Cd, Pb and Cu in clam Area granosa through determining their contents in Dlood and soft parts. The results show an order of concentration factors for these metals therein as: Cd>Cu>Pb; the values of concentration factors and the patterns of distribution are similar for Cu and Pb but different from Cd. Concentration factors in blood can reflect the enrichement abilities of soft parts. Exposure experiments have indicated that the Pb level in blood is controlled by Pb concentrations in surrouding seawater, changing with time, that the Pb cocentration causing poisoning in the seawater is 1-100 μg/l, and that the Pb content in blood and soft parts of Area granosa increases with that of Pb increasing in seawater. There exist relationships of double logatithmic concentrations for Pb among the three mediums. 相似文献
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