农用地土壤中汞元素形态特征浅析  

Preliminary study on chemical forms of Mercury in farmland soil

作　　者：何中发[1] 方正[1] 孙彦伟[1] 李金柱[1] 夏晨[1] 温晓华[1] 张琢[1] 刘文长[2] 江思珉[3] 

机构地区：[1]上海市地质调查研究院,上海200072 [2]国土资源部合肥矿产资源监督监测中心,合肥230001 [3]同济大学水利工程系,上海200092

出　　处：《上海地质》2009年第1期45-49,共5页

基　　金：国土资源部与上海市人民政府合作项目"上海市三维城市地质调查"(1212010511102)

摘　　要：以第四纪沉积物厚覆盖区农用地表层土壤汞元素为研究对象,分析了汞的水溶态、离子交换态、碳酸盐态、铁锰氧化态、腐殖酸态、强有机结合态、残渣态等7种形态存在特征,研究表明残渣态的含量比例与全量呈正相关关系,其他6种类型形态含量比例则与全量呈负相关关系,农用地土壤中汞的增量主要为残渣态的汞。The chemical forms of mercury, distributed in the farmland topsoil of the regions covered by thick Qua- ternary sediments, were synthetically studied on their water solubility phases, exchangeable phases, car- bonate phases, Fe - Mn oxide phases, humic acid phases, strong organic phases and residual phases. The results indicate that the percent of the total Hg is positively correlated with that of the residual phase Hg, and negatively correlated with the other 6, and also, the residual phase Hg constitutes the majority of the incremental Hg in the farmland topsoil.

关 键 词：农用地 重金属 汞元素 形态特征 

分 类 号：X53[环境科学与工程—环境工程] S158[农业科学—土壤学]