南京某铁矿区矿业活动对土壤重金属的累积效应  

The Cumulative Effects of Mining Activities on the Heavy Metals in Soils of an Iron Mine in Nanjing

作　　者：毛香菊[1,2] 邹安华[3] 马亚梦[1,2] 肖芳[1,2] 冯安生[1,2] 孙体昌[3] 

机构地区：[1]中国地质科学院郑州矿产综合利用研究所,河南郑州450006 [2]国土资源部多金属矿评价与综合利用重点实验室,河南郑州450006 [3]北京科技大学,北京100083

出　　处：《矿产保护与利用》2016年第4期50-55,共6页Conservation and Utilization of Mineral Resources

基　　金：中国地质调查局地质调查工作项目(12120113006900);中国地质调查局地质调查项目(121201017000150003)

摘　　要：人类活动会导致土壤重金属的累积,其中矿业活动是土壤重金属累积的重要原因。采集南京某铁矿区矿业活动区、矿业活动影响区和未受矿业活动影响的对照区表层土壤,测试其中的重金属Cd、Cr、Cu、As、Hg、Ni和Pb含量,分析7种重金属之间的相关性,分别以对照区表层土壤重金属总量、对照区土壤似背景值评价矿业活动对活动区和影响区土壤重金属的累积贡献量和贡献率。结果发现,矿业活动对活动区重金属累计贡献率顺序为Cd>Pb>Cu>As>Cr>Ni>Hg,对影响区重金属累计贡献率依次为Cr>Hg>As>Cd>Pb>Cu>Ni。矿业活动区Pb和Cd表现为极高累积和极高风险,应引起足够的重视,加大相关治理力度。Human activities could lead to heavy metals accumulation in soil, and mining activity isone of the important factors. The surface soil samples of iron mining area, influenced area and comparedarea were collected, and heavy metals （including Cd, Cr, Cu, As, Hg, Ni and Pb） contentof these soil samples were measured. Based on the relationships of these metal and the results ofcompared area, the effect of mining activities on soils heavy metal accumulation quantity and contributionrates in mining area and the influenced area were calculated. The results showed that the sequencesof heavy metal accumulation rates were Cd 〉 Pb 〉 Cu 〉 As 〉 Cr 〉 Ni 〉 Hg in mining areaand Cr 〉 Hg 〉 As 〉 Cd 〉 Pb 〉 Cu 〉 Ni in influenced area. In particular, Pb and Cd were characterizedby high accumulation and high risk in mining area, which should be paid enough attention andemphatically controlled.

关 键 词：铁矿区 矿业活动 土壤 重金属累积 

分 类 号：X53[环境科学与工程—环境工程]