近几年来,环境污染的研究工作迅速发展,已由一般的污染调查转入污染物质迁移转化规律、迁移机制及建立模式的研究。众所周知,在河流或海洋水体中,重金属大都与悬浮物质有密切关系,常随着水体的流动迁移而沉积于底部。因此,研究沉积物对重金属的吸附或解吸作用,对于了解重金属的迁移,探明河流或海洋的自净能力等都有积极的意义。 In recent years, the research work of environmental pollution has been developing rapidly. From general pollution investigations, investigations on the transfer and transformation of pollutants, the mechanism of migration and the establishment of models have been conducted. As we all know, in river or ocean water, most of heavy metals are closely related to suspended matter, often with the flow of water migration and deposition at the bottom. Therefore, studying the adsorption or desorption of heavy metals by sediments has a positive meaning for understanding the migration of heavy metals and identifying the self-purification capacity of rivers or oceans.