中国海洋大学学报（自然科学版）2011，Vol.41Issue(10)：93-97,5.
栉孔扇贝对镉的富集及释放规律的研究
Study of the Variation Behavior of the Accumulation and Elimination of Cd2+ in Chlamys farreri
摘要
Abstract
The 35 days accumulation and 30 days elimination of cadmium were studied in Chlamys farre ri in cadmium exposure experiments. The results showed that Chlamys farreri had a strong character in enriching cadmium and the bioaccumulation amount in tissues increased with the addition of cadmium con centration in seawater. Furthermore, the speed of cadmium elimination decreased with the addition of cad mium concentration in seawater. Applying a kinetic model of two-compartment, the kinetic parameters was obtained through the nonlinear fitting. The constant of absorption rate k1 decreased with the concen tration of cadmium in seawater. The bioconcentration factors(BCF) which decreased with the concentration of the cadmium was merely 3 730 when the cadmium concentration in the seawater was 0. 05 mg/L. However, the BCF reached 1. 79 ×1011 when the cadmium concentration in the seawater was 0. 000 5 mg/L. The con centration of the cadmium in Chlamys farreri (Camax) showed a negative correlation with the concentration of the cadmium, which decreased rapidly with the concentration of the cadmium in seawater at equilibrium state. The elimination rate constant k2 and the biological half-life B1/2 had no obvious relationship with the low concentration of the cadmium while B1/2 increased significantly with the concentration of the cadmium which was opposite to the k2. It approved that the two-compartment kinetic model was appropriate for the accumulation and elimination experiments of the cadmium in Chlamys farreri.关键词
栉孔扇贝/Cd2+/富集/释放/双箱动力学模型Key words
Chlamys farreri/cadmium/accumulation/elimination/the kinetic model of two-compartment分类
资源环境引用本文复制引用
吴志宏,孙福新,王颖,刘天红,毛阳,王远红..栉孔扇贝对镉的富集及释放规律的研究[J].中国海洋大学学报（自然科学版）,2011,41(10):93-97,5.基金项目
海洋公益性行业科研专项资助 （）
