摘要
选取贵阳市62个代表性的表层土壤样品,分析了其重金属元素的含量和存在形态。结果表明,贵阳城市土壤中5种重金属元素(Cr、Cu、Pb、Zn和Cd)的含量较高,且变化较大。表层土壤中Cr、Cu、Zn主要以残渣态形式存在,Pb主要以可氧化态形式存在。Cd可还原态含量高达47.5%,残渣态含量最低,说明Cd较活泼,具有潜在的环境影响能力。
This paper described the speciation of heavy metals in sixty-two urban topsoil samples from Guiyang City, and the total concentrations of heavy metals were analyzed. The results indicated that the concentrations of Cr, Cu, Pb, Zn and Cd in urban soil at Guiyang are higher and vary significantly. Cr, Cu and Zn are present mainly in the residual fraction, and Pb is present mainly in the oxidizable fraction. The reducible fraction of Cd accounts for 47.5%, and the residual fraction is lowest. This shows that Cd is more active and has a potential impact on the environment.
出处
《矿物学报》
CAS
CSCD
北大核心
2008年第2期177-180,共4页
Acta Mineralogica Sinica
基金
国家重点基础研究发展计划项目(2006CB403200)
关键词
土壤
重金属
形态分析
贵阳
soil
heavy metal
speciation
Guiyang City
