贵州北部农业土壤重金属汞地质累积污染研究  

Geology Accumulation Contamination Study of Heavy Metal Hydrargyrum in Agricultural Soil in North Guizhou Province

作　　者：陈红亮[1,2] 刘峥军[1,2] 陈晓淼[1,2] 

机构地区：[1]安顺学院贵州省教育厅功能材料与资源化学特色重点实验室,贵州安顺561000 [2]安顺学院化学化工学院,贵州安顺561000

出　　处：《四川师范大学学报（自然科学版）》2014年第3期385-388,共4页Journal of Sichuan Normal University（Natural Science）

基　　金：贵州省科学技术厅;安顺市人民政府;安顺学院联合科技基金(黔科合J字[2012]01号);贵州省教育厅自然科学基金(黔教合KY字[2013]202号)资助项目

摘　　要：对贵州省北部的遵义县农业表层土壤重金属汞(Hg)的污染状况进行分析.结果表明,该地区土壤中Hg平均含量为0.182 mg/kg.地球化学基线理论分析显示,土壤中Hg的基线值为0.090 mg/kg,地质累积污染指数为0.155,整体上处于轻度级污染.地质累积污染指数法对所有土样Hg污染状况分析表明:24.07%的土样未受污染,60.74%为轻度污染,12.04%为中度污染,2.25%处于中度污染与强污染之间,0.67%为强度污染,0.23%处于强污染与极强污染之间;通过污染程度分析:33.07%的土样未受Hg的污染,55.91%受到Hg的影响,11.02%受到Hg的影响较严重,以上两种污染分析结果基本一致.The pollution of heavy metal Hg in agricultural topsoil of Zunyi county, North Guizhou province, was analysed in this paper. The results showed that the average content of heavy metal Hg was 0. 182 mg/kg. The geochemistry baseline content of Hg was 0.090 mg/kg. The geology accumulation indexs of Hg was 0. 155. Geology accumulation index calculations indicated that non-polluted soil accounted for 24.07% ： 60.74% was low-level pollution, 12.04% was mid-level pollution, 2.25% was between mid-level and severe pollution： 0.67% was severe pollution, only 0.23% was between severe and super severe pollution; the contamination degree analysis indicated that non-polluted soil accounted for 33.07% ： 55.91% was influenced by Hg, 11.02% was influenced seriously by Hg. The two kinds of analytic results mentioned above is basically identical.

关 键 词：农业土壤 汞 地球化学基线 地质累积 

分 类 号：X53[环境科学与工程—环境工程]