洪泽湖鱼体内重金属含量调查

对洪泽湖鱼体中的Pb、Cd、Cu、Cr、Zn等5种重金属进行了测定,分析了不同重金属在鱼的组织器官中的含量分布情况,并重点探讨了重金属在鱼体内的富集规律。结果显示：同一类组织器官中重金属的含量、同一金属在不同组织器官中的分布、不同鱼类对同种金属元素的吸收积累存在显著差异,5种重金属的含量以肌肉中的含量最低;均值型指数法显示,鱼样中肌肉组织残毒污染较小,属于微污染到轻污染级别;污染负荷比说明洪泽湖鱼体残毒的主要污染因子是铅、镉。

Survey of Heavy Metals in Fish Bodies of the Hongze Lake

Five kinds of heavy metals（Pb, Cd, Cu, Cr, Zn） were determined in fishes from Hongze lake, and the content distribution of the different heavy metals in fish tissues and organs was analyzed to probe into the enrichment regularity of heavy metals in fish bodies. The results showed that the heavy metal content in the same kind of tissues and organs, the same metal content in different tissues and organs, and the distribution of the same metal elements in different fishes are significantly different. Muscle contains the least content of the five kinds of metals. Mean index method shows that the pollution is less severe in muscle tissues of fish samples ,which belongs to the micro pollution to light pollution levels. Pollution load ratio reveals that the main pollution factor in fish samples in Hongze Lake is lead and cadmium.