高浊度河口颗粒态重金属对泥沙运动的指示作用

作者根据1994年6月长江口、杭州湾的水质调查资料，分析了这类高浊度河口颗粒态重金属的分布规律。研究表明，在长江口和杭州湾内，悬沙和表层沉积物中Cu、Pb、Cd分布特征相似，尤其在杭州湾中部水域，二者重金属含量呈趋同的态势。细颗粒泥沙是颗粒态重金属的主要载体。在高浊度河口，动力沉积过程为控制颗粒态重金属分布和输移的主要因子，颗粒态重金属的分布对泥沙运动具有指示作用，悬沙和表层沉积物中重金属元素的分布反映了长江口泥沙向杭州湾输移的事实。

The distributions of particulate heavy metals and its indication to the transfer of sediment in high turbidity estuaries

Based on the data collected during a water environmental survery in 1994, the distributions of particulate heavy metals were studied in the Changjiang Estuary and the Hangzhou Bay. The concentrations of heavy metals in suspended sediment are similar to those in surficial sediment. Fine-grained sediment is the main carrier of heavy metals. The domination of sedimentary dynamics on the fate of particulate heavy metals in high turbidity estuaries was underlined. The distributions of heavy metals in sediment can be the indicators of transferring of sediment. The distribution of particulate heavy metals reveals the transportation of sediment from the Changjiang Estuary to the Hangzhou Bay.