连续提取法对电镀废水污染土壤重金属形态研究  

Morphology of Heavy Metals in Soil Contaminated by Electroplating Wastewater

作　　者：钟雪梅[1] 刘杰[1] 朱义年[1] 宋波[1] 梁延鹏[1] 

机构地区：[1]桂林工学院资源与环境工程系,广西桂林541004

出　　处：《广西科学院学报》2006年第2期67-69,共3页Journal of Guangxi Academy of Sciences

基　　金：广西青年基金(桂科青0542006);广西自然科学基金(桂科自00342001-4);广西教育厅科研项目(桂教科研[2003]22号-6)资助

摘　　要：采用五级化学连续提取法测定电镀废水污染的土壤中Cu、C r、N i、Pb及M n等重金属的五种形态(可交换态,碳酸盐结合态,F e-M n氧化物结合态,有机结合态,残留态),分析金属元素和土壤固相组分的结合形态。结果显示,电镀废水污染的土壤中Cu、C r和M n的有效态含量较高,而N i和Pb则主要以残留态为主;在有效态中,Cu、C r和N i主要以有机结合态存在,分别占有效态含量的54.1%,73.5%和39.1%,而M n和Pb则以可交换态含量最高,分别占有效态含量的38.9%和39.6%;大部分C r来源于电镀废水污染;电镀废水污染的土壤中M n对植物的影响最为直接。Five-stage sequential chemical extraction procedure was used to determine the heavy metal morphology （exchangeable morphology, carbonate morphology, iron-manganese oxides, organic matter morphology and residue morphology of Cu, Cr, Ni, Pb and Mn） in soil contaminated by electroplating wastewater. It showed that effective morphology contents of Cu, Cr and Mn was at a rather high level, while most of Ni and Pb was found in the residue morphology. The Cu, Cr and Ni mainly was found in organic matter in 54.1%, 73.5% and 39.1% respectively. As to Mn and Pb was found in exchangeable morphology in 38.9% and 39.6% respectively. Most of Cr Comes from contamination of the electroplating wastewater. Mn has a most directly effect at plant at the soil contaminated by the eletroplating wastewater.

关 键 词：土壤 重金属形态 电镀废水 连续提取 

分 类 号：X53[环境科学与工程—环境工程]