黄渤海沿岸经济贝类体中重金属残留量水平

 以1990年7月～12月中国黄渤海沿岸经济贝类体内重金属分析数据为基础，探讨了黄渤海沿岸主要经济贝类体中5种重金属（Cu、Pb、Zn、Cd、Cr）含量水平及污染特征。其调查结果表明：目前只有铜未超过双壳类软体动物评价标准。重金属残留量平均水平为黄海沿岸大于渤海沿岸。不同种类双壳类软体动物对５种重金属富集能力存在着差异，牡蛎对铜、锌的富集能力比其他贝类高40～100倍，毛蚶对镉、铬的富集能力比其他贝类高5～58倍。此沿岸的紫贻贝、牡蛎、文蛤、毛蚶等可作海洋污染生物指示种。

Levels of heavy metals in molluscs from the coastal region of Bohai Sea and Huanghai Sea

Based on the data of investigation in the coastal region of Bohal Sea and Huanghai Sea in the year 1990,the pollution feature and concentration of heavy metals in 13 species of molluscs,are discussed in the paper. The average levels of heavy metals show;Huanghai Sea coastal area>Bohai Sea coastal area. The variety of concentrations of heavy metals in differnt species of molluscs has been observed. The levels of metals accumulated in Mytilus Edulis,Ostreagigas Thumberg and Arca Subcrenata may demonstrate the potential of certain species as bioindicators of heavy metals pollution.