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1、AtmosphericPollutionResearch6(2015)550555AtmosphericPollutionResearchConcentrationsofcarbonmonoxideinindoorandoutdoorairofGhalyuncafesMehdiFazlzadeh：RoohollahRostami2,SadeghHazrati：AllRastgu11DepartmentofEnvironmentalHealthEngineering,SchoolofPublicHealth,ArdabilUniv
2、ersityofMedicalSciences,Ardabil,Iran2DepartmentofEnvironmentalHealthEngineering,SchoolofHealth,SemnonUniversityofMedicalSciences,Semnan,IranABSTRACTCorrespondingAuthor:SadeghHazratiIndoorandoutdoorcarbonmonoxide(CO)concentrationsweremeasuredin68GhalyuncafesinArdabilC
3、ityofIran.Onehoursamplingwasperformedineachlocationandhourlymeanconcentrationswerereported・RespectivemeanconcentrationsofCOinindoorandoutdoorairwere24.75±17.17and2.65±1.33ppmwithanaverageindoortooutdoorairconcentrationratioof13.3+13.1.Withinthevariablesstudied;typeof
4、thetobaccosmoked,locationofthecafeinsidethebuilding,andutilizingmechanicalventilator,respectively,wererecognizedasthemostinfluentialfactorscontrollingCOconcentrationsinGhalyuncafes(p<0.05).73.5%ofworkers(27.3and95.7%ofcafeslocatedongroundfloorsandbasements,respective
5、ly)wereexposedtohigherlevelsofCOthanthecorrectedOEL-TWA(OccupationalExposureLimit)of10.4ppm.Keywords:Carbonmonoxide,Ghalyun,indoor,outdoor,cafes:+984533513428□:*984533512004:S.hazrati@arums.ac.irArticleHistory:Received:05July2014Revised:16December2014Accepted:18Decem
6、ber2014doi:10.5094/APR.2015.0611.IntroductionCOisacolorless,non—irritating,odorless,andtastelessgaseouspollutant(Langstonetal.,2010)thatmaybeemittedintotheenvironmentfromanthropogenicornaturalsources・Itisproducedbyincompletecombustionofcarbonaceousfuelssuchaswood,pet
7、rol,coal,naturalgasandkerosene(WHO,2010).MotorvehiclesandindustriesarerecognizedasmainsourcesforatmosphericCOpollutioninurbanareas・However,indoorairqualitymaybeaffectedbywidevarietyofCOemittingsourcesincludinggasstoves,tobaccosmoke,woodburningstoves,fireplaces,andoth
8、erfossilfuelburners(Chowdhuryetal.,2013).ExposuretothehighconcentrationsofCOinindoorambientairathomeisrareandlimitedtosomeparticula
