资源描述：
《室内有害气体的来源与危害（the source and harm of indoor harmful gas）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、室内有害气体的来源与危害（Thesourceandharmofindoorharmfulgas）Thetypes,sourcesandhazardsofthemainsubstancesinindoorenvironmentTheenvironmentalqualityofindoorenvironmentalpollutionisinfluencedandpollutedinmanyaspects,whichcanbedividedintothreecategories.A:physicalpollution,includingnoise,r
2、adiation,electromagneticradiationandradioactivepollution,mainlycomesfromoutdoorandindoorelectricalequipment.B:chemicalpollution,buildingdecorationmaterialsandfurnitureproductsinthereleaseofvolatilecompoundsofdozensof,withradon,formaldehyde,benzene,ammoniaandsoonfourbigthehar
3、mofindoorharmfulgasisparticularlyacute.C:biologicalpollution,mainlymites,termitesandotherbacteria,mainlyfromcarpets,blankets,woodproductsandstructuralsubjects.Themainsourceandharmcausedbytheimproperdecorationofformaldehyde,ammonia,radongas,benzene,radioactivesubstancesarethe
4、mainsourcesofindoorenvironmentalpollutants.A:theoriginandhazardofradongas.Radongasisakindofradioactivematerialwhichisprecipitatedfromgranite,cement,slag,blockandgypsumbuildingmaterials.Mainlycomesfromtheinorganicmaterialisgivenprioritytowithnaturalstone(granite,marble,gypsum
5、,cement,sand,etc.)andthecomprehensiveutilizationofslagandindustrialwasteresidueafterproducts(coalganguebrick,flyashproducts).Radoniseasytoenterintothelungswithhumanbreath,harmingthehumanrespiratoryorgansandcausingseriouslungcancer.Theradiationinnaturalstonecandamagethehumanh
6、ematopoieticfunction,causingtheoccurrenceofleukemia.B:sourceandhazardofformaldehyde.Formaldehydeisanorganiccompound,colorlessandeasytodissolve,withstrongpungentsmell.Thematerialmainlycomesfrominteriordecorativeplywood,joineryboard,mediumdensityfiberboardandparticleboard,andw
7、oodfurnituremadefromplywoodandinferiorwoodglue.Otherkindsofadornmentmaterial,suchascertainchemicalfibercarpet,paint,wallpaper,plasticfoam,paintandsomeorganicmaterialalsocontainacertainamountofformaldehyde,itsreleaseperiodis3~l5years.Formaldehydeisstimulatingtotheeyes,mucosaa
8、ndrespiratorytract,whichcancausepneumonia,pulmonaryedema,menstrualdisorders
