紫贻贝对海水中镉富集规律的研究  

Research on Cadmium Bioaccumulation in Mytilus edulis

作　　者：李淑丽[1] 孙咏红[1] 于丽华[1] 

机构地区：[1]大连交通大学环境科学与化学工程学院,辽宁大连116028

出　　处：《西安文理学院学报（自然科学版）》2008年第1期57-60,共4页Journal of Xi’an University(Natural Science Edition)

摘　　要：利用原子吸收分光光度法研究暴露实验中紫贻贝(Mytilus edulis)对镉富集的生物动力学特性及铜离子对紫贻贝吸收镉离子吸收的影响.结果表明,在不同浓度的镉溶液中,随着暴露时间的延长,紫贻贝对镉的富集量逐步增加,12 d(288 h)后,在镉浓度为0.01、0.2 mg/L溶液中紫贻贝富集的镉含量趋向于平衡,在0.2 mg/L的镉溶液中的富集量达73.64 mg/(kg干重).在铜离子存在下,实验进行10 d结束时,实验组比对照组的镉含量高7.36 mg/(kg干重),说明铜离子对紫贻贝吸收镉离子有促进作用.This paper was an attempt to investigate cadmium bioaccumulation in Mytilus edulis and the ef- fect of the Mytilus edulis on cadmium accumulation. In various cadmium solutions, the cadmium accumulation in the Mytilus edulis increases with the extension of feeding time. After 12 days（288 h）, the cadmium concentration in the seawater was 0.2 mg/L, the bioaccumulation amount in the Mytilus edulis was 73.64 mg/kg dry wt. If copper existed in the solution, after 10 days, the cadmium accumulation in the Mytilus edulis of experiment was 7.36 mg/kg dry wt higher than the control experiment, so copper ion has the positive effect on the Mytilus edulis of cadmium accumulation.

关 键 词：紫贻贝 镉 铜 富集 

分 类 号：X506[环境科学与工程—环境工程]