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酸溶硫化物与沉积物中重金属化学活性的关系
引用本文:陈淑梅,王菊英,马德毅,韩建波.酸溶硫化物与沉积物中重金属化学活性的关系[J].海洋环境科学,1999,18(3):16-31.
作者姓名:陈淑梅  王菊英  马德毅  韩建波
作者单位:国家海洋环境监测中心,大连,116023
基金项目:国家“九五”科技攻关项目
摘    要:通过Cu、Pb、Zn、Cd、Ni、Co的沉积物加标实验以及膜渗透平衡交换间隙水采样技术,探讨了间隙水中重金属浓度对不同加标量的沉积物化学响应关系和重金属在沉积物—间隙水两相间的地球化学分配机制。研究结果表明:在硫化物存在条件下,重金属在固、液两相间的分配主要受酸溶硫化物(AVS)影响,AVS决定了沉积物中重金属的化学活动性,AVS归一化沉积物中二价有毒金属可作为预测和评价重金属化学分配行为的有效方法

关 键 词:酸溶硫化物  重金属  化学活性  沉积物

Relationship between acid-volatile sulfide and chemical activi ty of heavy metals in sediment
Chen Shumei,Wang Juying,Ma Deyi,Han Jianbo.Relationship between acid-volatile sulfide and chemical activi ty of heavy metals in sediment[J].Marine Environmental Science,1999,18(3):16-31.
Authors:Chen Shumei  Wang Juying  Ma Deyi  Han Jianbo
Abstract:The relationship between the concentrations of the heavy metals in the porewater and sediment with different concentrations of added heavy metals was discussed. The porewater was sampled through the membrane penetrating equilibrium. The geochemical partitioning mechanism between the sediment and porewater was studied. It showed that the partition of the heavy metals between solidliquid phase was mainly affected by acidvolatile sulfide (AVS) with sulfide in the sediment. AVS controlls the chemical activity of the heavy metals in the sediment. Using AVS normalization heavy metals was the effective method to predetermine and evaluate their partition in sediment.
Keywords:acidvolatile sulfide  heavy metals  sediment  chemical activity  
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