Monitoring of Airborne Polybrominated Diphenyl Ethers in the Urban Area by Means of Road Dust and Camphor Tree Barks英文资料

Monitoring of Airborne Polybrominated Diphenyl Ethers in the Urban Area by Means of Road Dust and Camphor Tree Barks英文资料

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时间:2019-08-08

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1、AerosolandAirQualityResearch,14:1106–1113,2014Copyright©TaiwanAssociationforAerosolResearchISSN:1680-8584print/2071-1409onlinedoi:10.4209/aaqr.2012.11.0304MonitoringofAirbornePolybrominatedDiphenylEthersintheUrbanAreabyMeansofRoadDustandCamphorTreeBarks*ShuangxinShi,LiangDong,WenlongYang,LiZhou,L

2、ifeiZhang,XiulanZhang,YeruHuangNationalResearchCenterforEnvironmentalAnalysisandMeasurements,DioxinPollutionControlKeyLaboratoryofStateEnvironmentalProtectionAdministration,Beijing100029,ChinaABSTRACTUrbanroaddustandcamphortreebarksampleswerecollectedinJuneof2009fromSuzhou,WuxiandNantongintheYang

3、tzeRiverDelta,China.Eightpolybrominateddiphenylether(PBDE)congeners(BDE-28,47,100,99,154,153,183and209)weremeasuredtodeterminethelevelsandcompositionalprofilesinthesamples.TheconcentrationsofΣ7PBDEsandBDE-209rangedfromN.Dto35.5μg/kgand4.01to1439μg/kgdryweight(dw)intheroaddustsamples,5.1to799μg/kg

4、and121to3243μg/kglipidweight(lw)inthetreebarksamples,respectively.BDE-209wasthepredominantcongener(contributingto64.1–99.8%ofΣ8PBDEs)inallsamples.ApartfromfugitiveemissionsfromPBDE-containingproducts,combustionprocessesandvehiclesemissionscouldalsocontributeBDE-209totheroaddustandtreebarksamples.

5、Onaverage,thePBDEscontaminationdegreeinthreecitiesfollowtheorderofNantong>Suzhou>Wuxi.RoaddustandtreebarkprovedtobeaneffectiveaccumulatortoreflectthedegreeofatmosphericPBDEspollutantsintheurbanenvironment.Keywords:Roaddust;Treebark;Polybrominateddiphenylethers;Urbanarea.INTRODUCTIONandamountsfrom

6、variouscombustionprocessescouldcondenseontotheflyashesorinthefluegases,andthenPolybrominateddiphenylethers(PBDEs)areextensivelyreleasetotheoutdoorair.Incinerators,powerplants,usedasflameretardantsinvariouspolymers,andespeciallymetallurgicalprocessesandvehicleswererecentlyidentifiedinelectronicequ

7、ipmentsuchascomputersandtelevisionasPBDEsemissionsources,whichcouldcontributesets(deWit,2002).StudieshaveshowncertainPBDEssignificantPBDEstotheatmosphere(Wangetal.,2010;possessthepropertiesofpersistentorganicpollutants

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