海口湾重金属富集与评价

Enrichment and Evaluation of Heavy Metals in Haikou Bay

以海口湾海底沉积物、海水和水产品为研究对象,分析样品中As、Cd、Hg、Pb、Cu、Zn、Ni、Cr的含量,采用内梅罗指数法、生物浓缩因子及生物-沉积物富集因子评价了水产品体内重金属污染状况。结果表明:海口湾水体中的重金属含量都低于渔业水质标准,海洋沉积物质量良好,海口湾水产品体内As、Cd、Hg、Pb、Cu、Zn、Ni、Cr的含量处于洁净状态,符合无公害产品质量标准;生物对不同重金属有不同的富集能力。

With seafloor sediments, sea water and aquatic products in Haikou Bay as the objects of the research, this paper studies the content and distribution of heavy metals（As, Cd, Hg, Pb, Cu, Zn, Ni, Cr） and evaluates the heavy metal content of aquatic products using Nemerow index, bio-concentration factors and biological-sediment accumulation factors in organism. The results indicate that the content of heavy metals in water is lower than that of the standard water quality of fishing industry, revealing that the sediment quality is good. The contents of Zn, Cu, Pb, Cd, Ni and Hg in aquatic products are in a clean state, fitting the standard of pollution-free products. The accumulation capacities of organisms differ in accordance with the difference of heavy metals.