湘中锑矿区土壤重金属锑的污染特征  

Characteristics of Antimony Pollution in Soils at Mining Areas in Central Hunan Province

作　　者：李航彬[1] 杨志辉[1] 袁平夫[1] 邓立聪[1] 王兵[1] 苏长青[1] 

机构地区：[1]中南大学冶金科学与工程学院环境工程系,湖南长沙410083

出　　处：《环境科学与技术》2011年第1期70-74,127,共6页Environmental Science & Technology

基　　金：湖南省科技重大专项(2009FJ1009-2)

摘　　要：文章研究调查了冷水江锡矿山锑矿区、桃江板溪锑矿区、桃江马迹塘锑矿区、桃江武潭锑矿区、安化符竹溪金锑矿区及安化渣滓溪锑矿区及周围土壤中锑的含量及形态分布。结果表明:各矿区土壤中总锑含量范围为185.6～2 081.3 mg/kg,大大超过了土壤中锑的背景值,表明各矿区土壤已被严重污染。采用Tessier逐级提取法对土壤中锑进行形态分级,表明土壤中锑主要以残余态形式存在,残余态锑占土壤中总锑比例可高达90%;而易被植物吸收的水溶态锑含量最低,占总锑的比例不足百分之几;可交换态锑和碳酸盐结合态锑的含量高于铁锰结合态和有机结合态锑含量。China is one of the countries which are abundant in antimony resource,whose reserves,yield and export amount of antimony rank the first in the world.However,with the exploitation and utilization of antimony,the pollution in antimony mining areas is becoming more and more serious.Antimony pollution characteristics and antimony fractions in soils at 6 antimony mining areas including Xikuangshan in Lengshuijiang City,Banxi,Majitang and Wutan in Taojiang County,Fuzhuxi and Zhazixi in Anhua County were investigated.Results showed that total antimony content in soils varied from 185.6 mg/kg to 2 081.3 mg/kg,which substantially exceeded its background level.Antimony in soils mainly was associated with residual fraction,accounting for as high as 90% of total antimony,while the content of water soluble antimony was pretty low.The contents of exchangeable and carbonate-bound antimony are higher than those of Fe-Mn-bound and organics bound antimony.

关 键 词：锑矿区 锑污染 土壤污染 TESSIER连续提取法 

分 类 号：X131.3[环境科学与工程—环境科学]