辽河流域水系表层沉积物典型重金属污染评价

用地质累积指数法和污染负荷指数法对辽河流域水系表层沉积物中典型重金属进行评价。结果表明,辽河流域水系表层土壤背景值标准的评价结果略高于普通页岩背景值标准的评价结果,但两者评价结果基本一致,无显著差异。从两种评价方法的评价结果来看,尽管评价结果略有差别,但总体上是一致的,即辽河流域水系沉积物中典型重金属的污染程度较轻。

The geoaccumulation index and pollution load index method are used for evaluating the typical heavy metal of surface sediments in Liao river basin, the results show that the evaluation by soil background value standard is slightly higher than that of by the ordinary shale background value standard ,but both evaluation results are basically the same, no significant difference. From the two kinds of evaluation methods of evaluation results, although there is a slightly different in the evaluation results, the general result is consistent, namely the typical heavy metal pollution in the sediment of Liao river basin is at a lesser degree.