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1、ThePotentialExposureofResidentstoEmissionsfromBuildingMaterialsusedinaNewCompositePanelHousePaper#:32AndreaBartekovaDepartmentofBio-basedProducts,UniversityofMinnesota,203KaufertLab,2004FolwellAvenue,St.Paul,MN55108,Tel:1-612-625-5200,Fax:1-612-625-6286,E-mail:barte034@umn.edu
2、,PatrickHenryHuelmanDepartmentofBio-basedProducts,UniversityofMinnesota,203KaufertLab,2004FolwellAvenue,St.Paul,MN55108,Tel:1-612-625-5200,Fax:1-612-625-6286,E-mail:huelm001@umn.eduClaudiuLunguDivisionofEnvironmentalHealthSciences,1260Mayo(MMC807),420DelawareStreetSEMinneapoli
3、s,MN55455,Tel:1-612-625-6904,Fax:612-626-0650,E-mail:lungu001@umn.eduABSTRACT:TheconcentrationofairborneorganiccontaminantsinanewlybuilthouseinSt.Paul,MNandtheVOCemissionprofilesofthebuildingmaterialsandcoatingsusedinthehousehavebeenanalyzedandcriticallyassessed.Measurementswe
4、reperformedtodetermineformaldehyde,individualvolatileorganiccompounds(VOC)andtotalVOC(TVOC)concentrationusingairmonitoring.TheresultsshowthatTVOCcanreachconsiderablyhighconcentrationlevels(upto2.3mg/m3)duringthefirstmonthafterbuildingcompletion.TheobtainedTVOCconcentrationwash
5、igherthantherecommendedtargetcomfortzoneof200–300mg/m3.However,after6monthswiththeventilationsystemrunning,theconcentrationlevelwasreducedto0.455mg/m3.TVOCconcentrationinthehousewithoutmechanicalventilationwasapproximatelytwotimeshigherthanwithventilation.Thedominantclassesofc
6、ompoundsdetectedinthemonitoredhousewerearomatics,alkanes,terpenesandketones.Theinteriorareaofwoodcomposites(orientedstrandboard)coveredbypaintsandothercoatingsinthishouseisrelativelylarge.Thus,buildingmaterialsandpaintspresentthepotentialforhavingamajorimpactontheindoorairqual
7、ity.Buildingmaterialandcoatingemissiontestswereconductedusinga55-literenvironmentalchamber.ThelaboratoryresultsindicatethatterpeneswerefoundmainlyintheuncoatedOSBsamples,whileN-decaneandN-undecanearethemostabundantcomponentsintheoilbasedprimerusedasacoating.Thewater-basedlatex
8、wasfoundtocontainmainlybenzenederivatives.INTRODUCTION:Thegoa