吉林省饮水型砷中毒区地下水砷的分布规律与成因研究
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2020-01-22 13:39:16
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第21卷第4期2014年7月地学前缘(中国地质大学(北京);北京大学)EarthScienceFrontiers(ChinaUniversityofGeosciences(Beijing);PekingUniversity)Vol.21No.4July2014http://www.earthsciencefrontiers.net.cn地学前缘,2014,21(4)收稿日期:2013-12-01;修回日期:2014-02-26基金项目:中国地质调查局项目(1212010634701);吉林省地质调查局项目(1212010511208);吉林省环境保护厅重点科技项目(20070101)作者简介:汤洁(1957—),女,博士,教授,博士生导师,主要从事环境与健康、生态环境系统理论与技术研究。E-mail:tangjie@jlu.edu.cndoi:10.13745/j.esf.2014.04.003吉林省饮水型砷中毒区地下水砷的分布规律与成因研究汤洁,卞建民,李昭阳,张楠,梁爽,邴志武吉林大学环境与资源学院,吉林长春130012TANGJie,BIANJianmin,LIZhaoyang,ZHANGNan,LIANGShuang,BINGZhiwuCollegeofEnvironmentandResources,JilinUniversity,Changchun130012,ChinaTANGJie,BIANJianmin,LIZhaoyang,etal.AstudyofthedistributionandcausesofgroundwaterarsenicinthearsenismareaofdrinkingwatertypeinJilinProvince.EarthScienceFrontiers,2014,21(4):030-036Abstract:ThearsenismareaofdrinkingwatertypeinJilinProvinceofChinaisanewendemicarea,whichwasfoundaftertheendemicareasintheInnerMongoliaandinShanxiProvince.TheendemicareamainlybelongstoTongyuCountyandTaonanCityofthewesternJilinProvince.ItshydrogeologicalunitispartofthewestofthelargewaterstoringbasinofSongnenPlain.TheaquifersystemconsistsofQuaternaryphreaticandconfinedwaterandNeogeneconfinedwater.Atotalof194groundwatersampleswerecollectedwithinstantaneousmethodfromphreaticandconfinedaquifers.ByGISspatialoverlaytechnologyandlaboratoryandtestingtechnology,theresearchontherelationshipbetweenthecharacteristicsofregionalhydrochemicalenvironmentandarsenismofdrinkingwatertypewasconducted.Theresultsshowthattheverythicksiltymudalluviumandthelakesedimentsrichinorganicmatteraccumulatedindepressionareasprovidedthespaceforgroundwaterarsenicbytheregionalgeologicalstructurecontrol.Thetotalarsenicconcentrationrangesfrom0.001to0.339mg·L-1,andthevalenceofarsenicismainlyAs(V).ThedistributionofarsenicatthepresenttimehascloserelationshipwiththespatialvariationofFe,Mn,aswellasCl-,PO3-4,HCO-3andSO2-4.Thehigharsenicsamplesweremainlyinthedepressionareasaroundwithsomeuplifts,wherethedepthismorethan10mintheaquiferofphreaticwateran
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