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分析了瓯江口海域采集的15个表层沉积物样品重金属(Cu、Pb、Zn、Cd、Hg、As)的含量分布特征,并对其环境质量进行了评价,结果表明:重金属高值区主要分布在瓯江入海口灵昆岛两侧海域;用单因子评价法以第一类沉积物质量标准评价显示,该海域受重金属污染程度较轻,主要受到As和Cu的轻微污染;采用潜在生态风险指数法对该海域表层沉积物重金属污染的潜在生态风险进行了评价,该海域重金属的潜在生态危害系数大小顺序为Hg>As>Cd>Cu>Pb>Zn,沉积物对水域具有低潜在生态风险。
The distribution characteristics of heavy metals (Cu, Pb, Zn, Cd, Hg, As) in 15 surface sediment samples collected from the Oujiang River estuary were analyzed and the environmental quality was evaluated. The results showed that the distribution of heavy metals In the Oujiang River estuary Lingkun Island on both sides of the sea area; single factor evaluation method to the first class of sediment quality standards evaluation shows that the area is less heavily contaminated by heavy metals, mainly by As and Cu slight pollution; potential ecological risk Index method was applied to evaluate the potential ecological risk of heavy metal pollution in surface sediments of this area. The order of potential ecological risk factors of heavy metals in this area is Hg> As> Cd> Cu> Pb> Zn. Sediment has low potential ecological risk .