| Environmental endocrine disruptors (EDCs) pollution were closely related to the humanexistence, which have drawn the concern of governments and organizations. This paper tookthe Wei-he River in Xi’an Section as the research object, determined and analysised theconcentration distribution of twenty EDCs of organochloride pesticides(OCPs), polycyclicaromatic hydrocarbons (PAHs), phenols, phthalic acid esters(PAEs), steroids in trunk streamand tributaries (Zao-he river, Chan-he river, Ba-he river, Jing-he river, Lin-he river andYou-he river) of Wei-he River and the wastewater of twelve corporations which were selectedfrom detergent manufacturing, papermaking, artificial crude oil manufacture, equipmentmanufacture, printing industry, food industry and pharmacy industry. Then, provided thetheoretical basis for deeply understanding and preventing EDCs pollution in Wei-he riverbasin.The main results were as follows:(1)The concentrations of five kinds of EDCs in the Weihe river in Xi’an section were:OCPs (0.0001~6.774μg/L), PAHs (0.041~8.075ng/L), Phenols (0.04~24538.14μg/L), PAEs(0.01~3.49μg/L), Steroids (0.015~7.381μg/L).(2)The concentration of OCPs in Ba-he river was higher than other EDCs, in which thehighest concentration of hexachlorocyclohexane was2.944μg/L; the concentration of PAHs inYou-he river was higher, in which the highest concentration of Naphthalin was8.075μg/L; theconcentration of PAEs and steroids in Lin-he river was higher, in which the highestconcentration of di(2-ethylhexyl) phthalate (DEHP) was3.34μg/L, the highest concentrationof ethinyl estradiol(EE2) was7.381μg/L. Tributaries were contaminated seriously by phenols,the highest concentration of bisphenol A in Lin-he river was24538.14μg/L.(3)Regularity of seasonal variation of five kinds of EDCs’concentrations in dry season,spring, wet season and autumn were: concentrations of OCPs in spring and autumn>concentrations in wet season> concentrations in dry season; concentrations of PAHs inspring> concentrations in wet season> concentrations in dry season> concentrations inautumn; concentrations of PAEs in spring> concentrations in autumn and dry season>concentrations in wet season. The change of phenols was abnormal: concentrations of phenolsin wet season> concentrations in autumn> concentrations in dry season> concentrations inspring; concentrations of steroids in dry season> concentrations in spring and autumn>concentrations in wet season.(4)The main EDCs in industrial wastewater were phenols and PAHs. Bisphenol A pollution was detected in every wastewater sample, its greatest concentration was up to87.153μg/L;4-nonylphenol was detected except in the wastewater of blood products factoryand textile factory, its concentration was0.009~0.180μg/L; pentachlorophenol was detected inthe wastewater of detergent manufacturing factory and papermaking factory, its concentrationwas0~0.214μg/L;2,4-dichlorophenol was only detected in the wastewater of sewing machinemanufacture factory. PAHs were detected in the wastewater of detergent manufacturingfactory, papermaking factory，pesticide industry and equipment manufacturing industry, theconcentration of naphthalin in the wastewater of detergent manufacturing factory was25.215μg/L; the concentration of phenanthrene was0.033~0.841μg/L; fluoranthene was onlydetected in the wastewater of papermaking factory.(5)Bisphenol A pollution in Zao-he river mainly resulted from electrical and mechanicalfactories and equipment manufacturing industry; its pollution contribution rate was0.34%.PAHs pollution in Zao-he river mainly resulted from detergent manufacturing factory andpapermaking factory, in which the pollution contribution rates of naphthalin were100%and3.1%, and the pollution contribution rates of phenanthrene were4.1%and40.7%. BisphenolA pollution in Wei-he river mainly resulted from papermaking factory; its pollutioncontribution rate was5.7%;4-nonylphenol pollution mainly resulted from pesticide industry,sewing machine manufacture factory and artificial crude oil manufacture factory; theirpollution contribution rates were respectively0.7%,0.9%and0.5%; pentachlorophenolpollution mainly resulted from papermaking factory; its pollution contribution rate was0.09%;2,4-dichlorophenol pollution mainly resulted from the sewing machine manufacture factory,its pollution contribution rate was6.8%. PAHs in Wei-he river mainly resulted from pesticideindustry, sewing machine manufacture factory and papermaking factory; their pollutioncontribution rate of phenanthrene were respectively56%,70%and5%. Pesticide industry’spollution contribution rate of naphthalin was100%. |
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