【摘要】 本实验对上海苏州河支流彭越浦河底泥中Hg、Cd、Pb、Cr、Mn、Cu、Zn的释放形态进行了研究。结果表明,释放后悬浮液中浓度比清液高1—1.5个数量级。应用再悬浮的规律,推导出悬浮释放速率方程,其计算值与实测值的误差不大于30％。应用引出的迁移模式,预测在低潮位河流流速快时,水质将高于三级地面水标准,再次影响治理后的苏州河水质。更多还原

【Abstract】 The release of Hg, Cd, Pb, Cr, Mn, Cu and Zn from resuspended bottom sediments of Pengyuepu stream, a tributary of Suzhou River, was studied. It was found that the concentrations of the soluble metals after the resuspension were 1-1.5 order of magnitude higher than that before. A velocity equation for metal release was introduced and the calculated results were quite close to observed values. It was predicted that in case of low tide and high flow the metal concentrations in the water column would exceed the surface water standard of third class.更多还原