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水环境中Cd和Cu污染对监测生物河蚬积累效应的影响

Keywords: 河蚬,Cd,Cu,生物监测

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Abstract:

以河蚬作为指示生物,采用室内培养方法,研究了不同浓度的Cd和Cu的单独及联合作用的毒性效应。结果显示,在水体中浓度为10、20、30、40、50μg·L-1的Cd与Cu单独作用下,河蚬体内Cd与Cu的含量分别与其在该环境中的暴露时间和浓度呈显著正相关。在同样浓度的Cd与Cu共同存在的环境中,河蚬体内的Cd与Cu的含量仍与环境中该物质的浓度呈显著正相关,且随着暴露时间的延长均表现出对污染物质积累的增加。初步建议:河蚬可作为淡水中重金属污染的监测指示生物。

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