大宝山采矿活动对环境的重金属污染调查

调查了大宝山铁铜多金属矿床固体废弃物-水相互作用对环境的重金属污染,结果表明,矿床固体废弃物导致了水、土壤的重金属污染,污染元素主要有Cd、Cu、Pb、Zn等;重金属元素的水迁移强度由大至小顺序为Cr、Cu、Zn、Ni、Cd、As、Pb、Hg;元素的生物吸收系数由大至小顺序为Cd、Zn、Hg、Ni、Cu、Cr、As、Pb,虽然水稻糙米中的重金属含量未超过国家标准,但Cd、Cr两种元素含量已远远超出了植物中毒量的下限值.

EnvironmentInvestigation of HeavyM etalPollution from M ining in Dabaoshan

Large amounts of tailings were produced during mining in the Fe-Cu polymetallic Deposit at Dabaoshan.The interaction of solid waste with water has caused the release and migration of heavy metals in solid waste and contamination of surface water,soils and rice.The contamination depends on discarded mineral in the deposit.The main elements are Cd,Cu,Pb,Zn.The water migration coefficients of heavy metals in solid waste tend to be decreased in the order: Cr,Cu,Zn,Ni,Cd,As,Pb,Hg.The biological absorption coefficients of heavy metals are: Cd>Zn>Hg>Ni>Cu>Cr>As>Pb.Although the heavy metals in rice is under the standard limitations,elements of Cd and Cr are greater than the low limits of poisoning dose of plants.