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本文分析了乐清湾滩涂采集的10个表层沉积物样品重金属(Cu、Pb、Zn、Cd、Cr、Hg、As)的含量分布特征,并应用单因子污染指数法、内梅罗综合污染指数法和潜在生态风险指数法对其进行综合评价。结果表明:乐清湾滩涂表层沉积物重金属含量分布差别明显,该海域滩涂沉积物主要受到Cu污染;大部分站位表层沉积物重金属污染达到轻度等级;单项重金属潜在生态风险系数依次为As>Cd>Hg>Cu>Pb>Cr>Zn,沉积物对水域具有低潜在生态风险。
In this paper, the content distribution of heavy metals (Cu, Pb, Zn, Cd, Cr, Hg, As) in 10 surface sediment samples collected from the beach of Yueqing Bay was analyzed and analyzed by single factor pollution index method, Nemerow comprehensive pollution index method And potential ecological risk index method for its comprehensive evaluation. The results show that there are obvious differences in the distribution of heavy metals in the surface sediments of Yueqing Bay. The tidal flat sediments in this area are mainly polluted by Cu. The heavy metal pollution in surface sediments of most stations reaches a mild level. The potential ecological risk coefficients of single heavy metals are As> Cd > Hg> Cu> Pb> Cr> Zn, sediments have low potential ecological risk to waters.