南充市表层土壤中多环芳烃的源解析研究.pdf

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1、第22卷第7期化学研究与应用Vo1．22，No．72010年7月ChemicalResearchandApplicationJuly，2010文章编号：1004—1656(2010)07-0835-06南充市表层土壤中多环芳烃的源解析研究史兵方，张波，王耀，刘芳，涂悦鸿2，杨秀培H(1．西华师范大学化学化工学院，四川南充673002；2．百色学院化学与生命科学系，广西百色533000；3．Jil=IL医学院法医学系，四川南充673002)摘要：运用同分异构体比率、聚类分析法和主成分因子载荷法对南充市表层土壤多环芳烃

2、(PAHs)污染源进行了定性和定量分析。研究表明：同分异构体比率分析揭示表层土壤中PAHs污染来源以燃烧源为主；聚类分析将土壤中l3种PAHs组分分成3个主群，3个主群分别指示为交通类PAHs污染、煤燃烧类PAHs污染和混合类PAHs污染。主成分因子／多元线性回归分析显示，PAHs主要来源于3大污染源，并定量计算了3种源的贡献量，其中交通燃油污染的贡献率最大(占42．4％)，而燃煤燃烧排放、混合污染所占比例分别为32．4％和25．2％。关键词：表层土壤；多环芳烃；源解析中图分类号：0657．7文献标识码：ASour

3、ceapportionmentofpolycyclicaromatichydrocarbonsinsurfacesoilfromnanchongSHIBing．fang·，ZHANGBe，WANGYao，LIUFang，TUYue．hong2YANGXiu．pei‘，(1．CollegeofChemistryandChemicalEnsineefing，ChinaWestNormalUniversity，Nanchong637002，China；2．DepartmentofChemistryandlifescien

4、ces，BaiseUniversity，Baise533000，China；3．DepartmentofForensicScience，NorthSichuanMedicalCollege，Nanchong637002，China)Abstract：RelativeconcentrationsofPAHcompoundswithisomerratiosandClusterAnalysisandThefactoranalysis．multiplelinearregressionanalysiswereusedtoid

5、entifyqualitativelyandquantitativelythepossiblesourcesofPAHsinsoilofNanehong．StudiesshowthemainsourceofPAHsinsurfacesoi1wasincompletecombustionofpetroleumandtealbyisomerratioanalysis．PAHsclusteranalysisinferringthesourcesofPAHsindicatedthatthemainsourcesofPAHs

6、inthesoilswereincompletecornbustionofoilandcoa1．13PAHsinsurfacesoilweredividedintothreemaincomponentgroupsbyClassanalysis．ThreemaingroupindicatedthatthemainsourcesofPAHsinthesoilsweretrafficvehiclesemissionandindustrycoalcombustionandcoalcombustion／vehicleexha

7、ust．Thefactoranalysis-multiplelinearregressionanalysisindicatedPAHcontaminationsinsurfacesoilsoriginatedfromvehiclesemissionandindustrycoalburningandmixedPAHspollution．Thecontributionsbasedonmultiplelinearregressionofmajorsourceswerequantifiedas42．4％fromtraffi

8、cvehicles．32．4％fromcoalbumingand25．2％fromcoalcombustion／vehicleexhaustrespectively．Keywords．*Surfacesoils；polycycliearomatichydrocarbons(PAHs)；sourceapportionment收稿日期：2010-01-05；修回