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通过对21个表层沉积物样品中的Cu、Pb、Zn、Cd、Cr、Hg、As等7种重金属元素含量进行测定,分析了安铺港沉积物中重金属的空间分布特征及其对港湾生态环境的危害状况。采用重金属单因子污染系数、综合污染指数对其污染程度进行了评价,并采用Hàkanson潜在生态危害系数与潜在生态风险指数法对重金属潜在危害进行了预测。结果表明:安铺港表层沉积物中重金属含量空间离散性较大,总体处于低污染状态,各重金属污染程度依次为Hg>Cd>Pb>As>Zn>Cu>Cr;安铺港潜在生态风险危害总体属于低生态危害范畴,重金属生态危害系数的排序为Hg>Cd>As>Pb>Cu>Cr>Zn;各金属与有机质及相互之间较显著的正相关,其中,Cd与有机质和各金属的相关性略低。
Pb, Zn, Cd, Cr, Hg, As and other seven heavy metal elements in 21 sediment samples were measured to analyze the spatial distribution of heavy metals in Anpu sediments and their impact on the ecology of harbor Environmental hazards. The contamination degree of heavy metals was evaluated by the single factor pollution coefficient of heavy metals and the comprehensive pollution index, and the potential hazards of heavy metals were predicted by Hàkanson potential ecological risk index and potential ecological risk index. The results showed that the spatial distribution of heavy metals in the surface sediments of Anpu Harbor was relatively large with low pollution and the pollution levels of heavy metals were Hg> Cd> Pb> As> Zn> Cu> Cr. The potential ecological risk of Anpu Harbor The hazards are generally in the category of low ecological risk, and the order of the ecological risk factors of heavy metals is Hg> Cd> As> Pb> Cu> Cr> Zn. The metals are significantly and positively correlated with each other and organic matter, The relevance of the metal is slightly lower.