乳山湾贝类体中重金属含量及其评价研究

ASSESSMENT 0F HEAVY METAL CONTENTS IN SHELLFISH IN RUSHAN BAY

研究了乳山湾6～9月间贝类体内Cu、Zn、Pb、Cd、Cr、As、Hg等重金属含量富集水平，结果表明，贝类体内以Cu、Zn含量最高，特别是牡蛎体内Cu含量在8月中旬高达69．09mg／kg·ww，较其他重金属含量高得多，反应了该湾受Cu污染较严重，但均未超过海洋生物体内有关软体双壳类的污染评价标准。

This paper is based on l995 June to November,investigations on the heavy met-al contents in shellfish in Rushan Bay. The results showed that the contents of copper and zincwere the most high. The content of copper in Oyster reached 69. O9 mg/kg .wet,and was higherthan that of other heavy metals. This indicated that this bey had been seriously Polluted by copperfor some time,but that the pollution level did not exceed the evaluation standard of pollution formarine Bivalvia.