【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。更多还原

【Abstract】 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.更多还原