《source identification of ground water pollution with the aid of multivarlate statistical analysis》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在教育資源-天天文庫。

1、8IWAInternationalConferenceonWaterEconomics,Statistics,andFinanceRethymno,Greece,8-10July2005SOURCEIDENTIFICATIONOFGROUNDWATERPOLLUTIONWITHTHEAIDOFMULTIVARIATESTATISTICALANALYSISTingNienWu1,Yi-ChuHuang2,Mu-ShengLee3,Chih-MingKao41DepartmentofEnvironmentalEngineering,Ku

2、nShanUniversityofTechnology,949DaWanRoad,Yung-KangCity,TainanHsien710,Taiwan,R.O.C.,wutn@mail.ksut.edu.tw.2DepartmentofEnvironmentalScienceandEngineering,NationalPingtungUniversityofScience&Technology,1HsuehFuRoad,Nei-PuHsiang,PingtungHsien912,Taiwan,R.O.C.3Environment

3、alProtectionBureauofTainanCounty,78,sec2ChangJungRoad,Hsing-YingCity,TainanHsien730,Taiwan,R.O.C.4InstituteofEnvironmentalEngineering,NationalSunYat-senUniversity,70LienHiRoad,KaoshiungCity804,Taiwan,R.O.CABSTRACTWiththeaidofmultivariatestatisticalanalysis,thisstudyatt

4、emptedtoforeseepossibleunderlyingprocesses,attributetheirinfluence,andisolatethedistributionofsourcesthatmightthreatgroundwaterquality.TainanCountywasemployedascasestudy,andthirty-fourmonitoringwellsweresampledforroutinelabanalysis.Labdataofgroundwaterqualityincludingp

5、H,EC,hardness,chloride,sulfate,ammonia,nitrate,Fe,Mn,As,Zn,TOCandTDSweresubjectedtofactorandclusteranalysis.Principalcomponentanalysis(PCA)wasutilizedtoreflectthosechemicaldatawiththegreatestcorrelation,whereasclusteranalysis(CA)wasusedtoevaluatethesimilaritiesofwaterq

6、ualityingroundwatersamples.ByutilizingPCA,theidentifiedfourmajorprincipalcomponents(PCs)representing78.8%ofcumulativevariancewereabletointerpretthemostinformationcontainedinthedata.PC1reflectsthedominanceofsalinization,whichwascharacterizedbytheelevatedconcentrationsof

7、EC,hardness,chlorideandsulfateingroundwater.PC2withthepositiveloadingsofTOCandpHbutnegativeloadingofnitrateisthoughttoberepresentativeoforganicpollutionwithintheaquifer.PC3isregardedasmineralizationfactoronthebasisoftheloadingsofmanganeseandzinc.PC4showsastrongmonotoni

8、crelationshipwithammoniaconcentrationinthegroundwaterrevealingthelinkagewithagriculturalactivity.CAresultsillustrated