黄浦江表层沉积物重金属污染研究

Pollution Characteristics Research of Heavy Metals in Surface Sediments of Huangpu River

用加拿大沉积物质量导则对黄浦江表层沉积物重金属污染进行评价,并对重金属、总有机碳、有机质和硫化物含量进行了相关性分析、主成分分析和聚类分析。结果表明,黄浦江表层沉积物重金属污染水平较低,工农业布局与重金属分布关系密切,苏州河对黄浦江下游重金属存在一定输入贡献,重金属之间有一定的相关性,重金属与总有机碳及硫化物的相关性较差,表明除受人类活动影响外,还受自然沉积过程的影响。

Evaluation on heavy metals in surface sediments of Huangpu River has been conducted by using Canadian Environmental Quality Guidelines.Concentration data of heavy metals,total organic carbon,organic matters and sulfides in surface sediments were processed by using correlation analysis,factor analysis and cluster analysis.The results showed that pollution level of heavy metals in surface sediments was low.Distribution of heavy metals was effected by the layout of industrial and agricultural areas.The Suzhou River had some input contribute of heavy metals to the lower reaches of the Huangpu River.Positive linear correlations among concentrations of heavy metals were observed.The correlations among heavy metals,total organic carbon and sulfides were poor.It indicated that heavy metals pollution was affected not only by human activities,but also by natural sediment.