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1、第31卷第6期環(huán)境科學(xué)學(xué)報(bào)Vol.31,No.62011年6月ActaScientiaeCircumstantiaeJun.,2011劉勇,岳玲玲,李晉昌.2011.太原市土壤重金屬污染及其潛在生態(tài)風(fēng)險(xiǎn)評價(jià)[J].環(huán)境科學(xué)學(xué)報(bào),31(6):1285-1293LiuY,YueLL,LiJC.2011.EvaluationofheavymetalcontaminationanditspotentialecologicalrisktothesoilinTaiyuan,China[J].ActaScientiaeCircumstantiae,31(6):1285-129
2、3太原市土壤重金屬污染及其潛在生態(tài)風(fēng)險(xiǎn)評價(jià)1,*21劉勇,岳玲玲,李晉昌1.山西大學(xué)黃土高原研究所,太原0300062.山西大學(xué)管理學(xué)院,太原030006收稿日期:2010-09-01修回日期:2010-11-26錄用日期:2010-11-29摘要:為全面了解太原市土壤重金屬含量及其潛在生態(tài)危害程度,在研究區(qū)內(nèi)共采集了80個(gè)土壤樣品,測試了Pb、Cu、Ni、As、Cd、Cr、Hg、Zn共8種重金屬元素含量,并采用地積累指數(shù)法和潛在生態(tài)危害指數(shù)法對土壤重金屬污染進(jìn)行了分析和評價(jià).結(jié)果表明,太原市土壤環(huán)境總體污染程度處于無-中度污染,潛在生態(tài)危害處于輕微危害程度.相
3、對而言,各種重金屬污染程度由強(qiáng)至弱依次為:Cd>Hg>Zn>Pb=Cu>Ni>As>Cr;各種重金屬污染的潛在生態(tài)危害由強(qiáng)至弱依次為:Hg>Cd>As>Pb=Cu>Cr>Zn,其中,Hg的影響占絕對主導(dǎo)地位.總體而言,太原市城鎮(zhèn)區(qū)域土壤重金屬潛在生態(tài)危害最強(qiáng),耕地區(qū)域次之.太原市土壤中8種重金屬的超標(biāo)部分主要來自城鎮(zhèn)區(qū)域和耕地區(qū)域內(nèi)的日常生活和生產(chǎn)活動,如交通運(yùn)輸、燃煤釋放、農(nóng)業(yè)施肥和污水灌溉等.關(guān)鍵詞:土壤;重金屬污染;地積累指數(shù);潛在生態(tài)危害指數(shù);太原文章編號:0253-2468(2011)06-1285-09中圖分類號:X53文獻(xiàn)標(biāo)識碼:AEvaluati
4、onofheavymetalcontaminationanditspotentialecologicalrisktothesoilinTaiyuan,China1,*21LIUYong,YUELingling,LIJinchang1.InstituteofLoessPlateau,ShanxiUniversity,Taiyuan0300062.ManagementInstitute,ShanxiUniversity,Taiyuan030006Received1September2010;receivedinrevisedform26November2010;ac
5、cepted29November2010Abstract:InordertodeterminetheconcentrationofheavymetalsinthesoilsofTaiyuan,China,andtheassociatedpotentialecologicalrisk,80soilsampleswereobtainedandanalyzedforPb,Cu,Ni,As,Cd,Cr,HgandZn.Twoindices-theIndexofGeoaccumulationandthePotentialEcologicalRiskIndex-wereus
6、edtoevaluatethedegreeofpollutionbyheavymetals.Theresultsindicatedthatthesoilsinstudyareaarecharacterizedbyno-to-moderatepollutionandposealightpotentialecologicalrisk.TherelativedegreeofpollutionwasintheorderofCd>Hg>Zn>Pb=Cu>Ni>As>Cr.Likewise,thepotentialecologicalriskwascharacterized
7、bytheorderofHg>Cd>As>Pb=Cu>Cr>Zn,withthepredominantriskfactorbeingHg.Comparativelyspeaking,thesoilswithintheurbanareasposethegreatestpotentialecologicalrisk,followedbythoseinruralareas.Theexcessoftheseeightelementsinsoilsprimarilyresultsfromtransportation,coalcombustion,fertilization
8、,andirrigati