纺织品成为二恶英及其类似物 (PCDDF)的多种来源之一【外文翻译】

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1、外文翻译原文TextilesasaSourceofPolychlorinatedDibenzo-p-dioxinsandDibenzofurans(PCDD/F)MaterialSource:GermanyBayreuthUniversityAuthor:MichaelHorstmann,MichaelS.McLachlanAbstractPolychlorinateddibenzo-p-dioxinsanddibenzofuransweremeasuredinlow-tohigh-ppbconcentrationsinseve

2、ralpiecesofnewclothingfromdifferentmanufacturers.Itwasshownthatthesecontaminantsaretransferredfromtextilestohumanskinduringwearing.Theywerealsopresentinshowerwaterandwerewashedoutoftextilesduringwashing.Extensiveevidencewasfoundindicatingthatcontaminatedtextilesaream

3、ajorsourceofchlorinateddioxinsandfuransinnon-industrialsewagesludge,drycleaningresiduesandhousedust.1.IntroductionPolychlorinateddibenzo-p-dioxinsanddibenzofurans(PCDD/F)areubiquitousenvironmentalcontaminantsthathavebeenmeasuredinairandsoilthroughouttheworld.Therelat

4、iveconcentrationsofthecommonlyanalysedtetratooctachlorinatedPCDD/Fhomologuesaregenerallysimilarinsoilsthatarenotassociatedwithparticularindustrialsources[1].Varioustransformationsofthishomologuepattern,oftenreferredtoasthecombustionpattern,arefoundinmanyotherabioticm

5、atrices[2].However,inseveralmedia,specificallysewagesludge[3],drycleaningresidues[4,5]andhousedust[6],asecond,distinctpatterniscommonlypresent(---Fig.1).Althoughconsiderableefforthasbeeninvestedinidentifyingthesourcesofthisunusualpattern,particularlyinsewagesludge,no

6、satisfactoryexplanationhasyetbeenfound[7].Insearchingfortheanswertothisopenquestion,weanalyzedhumanepidermis.Fig.1:HomologuepatternsfortheCI4-CIsDD/F:a)The"combustionpattern"asmeasuredinsoilfromtheBayreutharea(meanpatternfrom5samples);b)the"sewagesludgepattern"(meanp

7、atternfrom12undigestedsludgesamplescollectedintheBayreuthwastewatertreatmentplant)2ExperimentalNumeroussamplesfromavarietyofmatriceswereanalysedforPCDD/F.Thispapersummarizestheresultsofmorethan10differentexperiments.Thepurposeofeachexperimentandthesamplingprocedureem

8、ployedarepresentedtogetherwiththerespectiveresultsinthefollowingsection.Allsampleswereextractedintoluolorn-hexane/acetonemixturesan