汞在贝类生境修复中的生物地球化学过程  

The Biogeochemical Process of Hg in the Habitat Restoration of Seashell

作　　者：张桂香[1] 衣丽霞[1] 

机构地区：[1]天津科技大学,天津300457

出　　处：《海湖盐与化工》2005年第4期17-21,共5页Sea-Lake Salt and Chemical Industry

基　　金：国家高技术研究发展计划(863计划)(2002AA648010);天津科技大学2003年度校基金项目

摘　　要：根据2004年4月在完成国家“863”项目的实验结果,分析了示范区内沉积物的机械组成、沉积物中重金属汞的各相分布、有机质含量分布及其相关性问题。实验结果表明:沉积物的机械组成与重金属汞的含量高低密切相关;重金属汞在酸可溶相含量最高,有机相次之,然后是水可溶相,而可交换相最低;沉积物中总汞含量、有机汞含量与有机质含量呈现明显的正相关关系。The mechanism composition,distribution of heavy metal Hg of each phase and organism contents and their relativity of sediment of the demonstrating section were analyzed according to the experimental results of the National “863” program in April,2004. The result showed that the mechanism composing of sediment was correlated nearly to the content of the heavy metal Hg. The content of the heavy metal Hg was highest in the acid dissolvable phase, lower in the organic phase and more lower in the water dissolvable phase,it was lowest in the exchangeable phase. The content of total Hg and organic Hg were positive correlated obviously to the content of organism in the sediment.

关 键 词：沉积物 重金属汞 各相分布 机械组成 

分 类 号：S985.3[农业科学—捕捞与储运]