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1、___________________________________________________________________www.paper.edu.cnChemosphere50(2003)611–618www.elsevier.com/locate/chemosphereSourcesandpatternsofpolycyclicaromatichydrocarbonspollutioninkitchenair,ChinaLizhongZhu*,JingWangDepartmentofEnvironmentalScience,ZhejiangUniv
2、ersity,XixiCampus,Hangzhou,Zhejiang310028,ChinaReceived21March2002;receivedinrevisedform23September2002;accepted8October2002AbstractTwelvepolycyclicaromatichydrocarbons,multi-ringedcompoundsknowntobecarcinogenicinairofsixdomestickitchensandfourcommercialkitchensofChinaweremeasuredin199
3、9–2000.ThemeanconcentrationoftotalPAHsincommercialkitchenswas17lg/m3,consistingmainlyof3-and4-ringPAHs,and7.6lg/m3indomestickitchens,where2-and3-ringPAHswerepredominant,especiallynaphthalene.TheBaPlevelsindomestickitchenswere0:0061–0:024lg/m3and0:15–0:44lg/m3incommercialkitchens.Conven
4、tionalChinesecookingmethodswereresponsibleforsuchheavyPAHspollution.ThecomparativestudyforPAHlevelsinairduringthreedifferentcookingpractices:boiling,broilingandfryingwereconducted.ItwasfoundthatboilingproducedtheleastlevelsofPAHs.Forfish,alow-fatfood,fryingitproducedalargeramountofPAHsco
5、mparedtobroilingpractice,exceptpyreneandanthracene.Incommercialkitchens,PAHscamefromtwosources,cookingpracticeandoil-fumes,howeverthecookingpracticehadamorepredominantcontributiontoPAHsincommercialkitchenair.Indomestickitchens,exceptforcookingpracticeandoil-fumes,therewereotherPAHssour
6、ces,suchassmokingandotherhumanactivitiesinthedomestichouses,where3–4ringPAHsmainlycamefromcookingpractice.Naphthalene(NA,2-ringPAHs)wasthemostpredominantkind,mostlyresultingfromtheevaporationofmothballcontainingalargequantityofNA,usedtopreventclothesagainstmoth.Afingerprintofoil-fumeswa
7、stheabundanceof3-ringPAHs.Heatingatthesametemperature,thePAHsconcentrationsindifferentoil-fumeswerelard>soybeanoil>rape-seedoil.AnincreaseincookingtemperatureincreasedthelevelsofPAHs,especiallyacenaphthene.Ó2002ElsevierScienceLtd.Allrightsreserved.Keywords:Kitchenair;PAHpollution;Sour
