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1、Trace ContaminantsOrganic Contamination -Chlorinated Anthropogenic Compounds ex:Pesticides&herbicidesInorganic Contamination -Metals,fluorides&selenium etc.Public Health Concern&Expensive Analytical TechniquesSDWAEPAMCLsU.S.EPA (DWS)ContaminantMCL(mg/l)copper1.0leadTTnickel0.1zinc5silver0.1mercury0.
2、1cadmium0.005selenium0.05thallium0.0005aluminum0.05-0.2Antimony0.006几种重金属元素迁移富集与污染Natural ErosionMining ProductionManufacturing or Metal-finishing OperationsTransformation,Concentration&ContaminationHow to recognizePeriodic Table of the ElementsSeveral Heavy ElementsOriginated from?Escaped from?Local DiseaseAcute Disease General PrincipalsAl&Si(As,Sb)Transit ElementsTl,Pb,UToxication Enzyme 甲基化产物CH4 CH3+CH3Hg+CH3CoB12+Hg2+H2O H2OCoB12+CH3Hg+ReferencesChemistry for Environmental Engineering,Clair N.Sawyer etc.Pollution Prevention:Fundamentals&Practice,Paul L.Bishop环境化学,戴树桂等环境分析,阎吉昌等