大氣污染英語(yǔ)版

AirPollution

Keyspeaker:kaihaoYu第一頁(yè)，共22頁(yè)。1IntroductionWeallknowthatcleanairisimportanttogoodhealth.Whereveryougoandwhateveryoudo,youarealwayssurroundedbyaseaofgasesthatwecallair.Ifthereareimpurities(雜質(zhì)(zázhì))intheair,theymaybeabsorbedbyourbodiesandmakeusill.Weneedcleanair,butunfortunately,airpollutionisgloballypresent,especiallyincities.第二頁(yè)，共22頁(yè)。2RevealacommonandseriousprobleminChina第三頁(yè)，共22頁(yè)。3First:CausesandcurrentstatusSecond:PollutiontypesThird:HazardandSolutions第四頁(yè)，共22頁(yè)。4

Nowtheairwebreatheispolluted.Whywastheatmosphere

pollution?Factoriesand

automobileexhaustarethemajorreasons.第五頁(yè)，共22頁(yè)。5statuspointone:Acidrainkeywords:pH,C,SO2

,southeastofchina第六頁(yè)，共22頁(yè)。6

pointtwo:Urbanairqualitykeywords:SO2,bothsidesoftheroadseverepollutioninnorthernwinter第七頁(yè)，共22頁(yè)。7pointthree:Indoorairqualitykeywords:urbanrenovation,indooropenflame

Manypeoplespendlargeportionoftimeindoors-asmuchas80-90%oftheirlives.Wework,study,eat,drinkandsleepinenclosedenvironmentswhereaircirculationmayberestricted.Forthesereasons,someexpertsfeelthatmorepeoplesufferfromtheeffectsofindoorairpollutionthanoutdoorpollution.

第八頁(yè)，共22頁(yè)。8pollutiontypes:1,nitrogenoxide(NOx)Istherepresentativeifatmosphericpollutioncausessubstance.Thereasoniscausedbynitrogenoxidesofboiler(鍋爐(guōlú)),automobileetcdischargesmoke.Thiskindofsmokeafterburningintheairasnitricoxideinline,airbecomenitrogendioxide.Nitricoxideisthereasoncausingacidrain.第九頁(yè)，共22頁(yè)。92,floatingparticleshapematerial(SPM浮游(fúyóu)粒子狀物質(zhì))Materialisinairzooplanktonfloatingsubstance,isoneoftheatmosphericpollutionofpollution.Inaddition,thesmokefromfactorycaremissions,outsideofman-madefactorssuchasvolcano,forestdisastersoccurnaturallynaturaldisasterisalsooneofthereasonsit.Floatingparticleshapematerialisharmfultohumanhealthofatmosphericpollutionsubstances,cancauserespiratorypatientsriseofmortality.第十頁(yè)，共22頁(yè)。103,photochemicalPhotochemicalcars,factories,etcokindantoisthenitrogenoxidesandhydrocarbon〔碳?xì)浠衔铩砫ischargeatmosphericpollutionsubstancessuchaswiththesun'sultravioletraytohumanbodyproduceschemicalreaction,theeffectsofatmosphericpollutionsubstances,iswhytuckphotochemical.Whenokindantohighconcentrationofchemicalwhencanleadtoeyes,throatuncomfortable.第十一頁(yè)，共22頁(yè)。114,sulfurdioxide(SO2)sulfonylureasSo2iscoal,oilburningsulfonylureaswhenatmosphericpollutionproduced.Characteristicsofsulfurdioxidelikeaneggsulfonylureaswhenthesmellofrottingout.Theonsetofpollutioncausedasthma〔哮喘(xiàochuǎn)〕reasoniscausedbysulfurdioxidesulfonylureasatmosphericpollution.5,carbonmonoxide(CO)Carbonmonoxideisincompletecombustionbyoilcausedinsipidity,odourless,colorless,nostimulationatmospherepollutants.Carbonmonoxideisveryterribleatmosphericpollutants,ifabsorbedalotofcarbonmonoxidecanleadtodeath.第十二頁(yè)，共22頁(yè)。12

Hazardofairpollution(1)Tohumanhealth(2)Toanimalsandplants(3)Toweatherandclimate第十三頁(yè)，共22頁(yè)。13StudieshaveestimatedthatthenumberofpeoplekilledannuallyintheUSalonecouldbeover50,000.Olderpeoplearehighlyvulnerabletodiseasesinducedbyairpollution.Thosewithheartorlungdisordersareunderadditionalrisk.Childrenandinfantsarealsoatseriousrisk.Diseasessuchasbronchitis〔支氣管炎(zhīqìɡuǎnyán)〕,lungcancer,andheartdiseasemayalleventuallyappearinpeopleexposedtoairpollution.第十四頁(yè)，共22頁(yè)。14Lookattheireyes….How

poor…第十五頁(yè)，共22頁(yè)。15Airpollutantssuchasozone,nitrogenoxides,andsulfurdioxidealsohaveharmfuleffectsonnaturalecosystems.Theycankillplantsandtreesbydestroyingtheirleaves,andcankillanimals,especiallyfishinhighlypollutedrivers.ACIDRAIN第十六頁(yè)，共22頁(yè)。16Theairpollutionbringsussomanypainandburden,sonext.Weshouldknowhowcanwepreventthedamagingeffectsofairpollution?第十七頁(yè)，共22頁(yè)。17Onthewhole,theelimination〔排除(páichú)〕ofairpollutionneedstheco-efforts〔努力〕fromthegovernment,thepublicandtheenvironments.Thisproblemwillbesolvedonlywiththehelpofscienceandtechnology.第十八頁(yè)，共22頁(yè)。18

Thefirststeptosolvingairpollutionisassessment.Researchershaveinvestigatedoutdoorairpollutionandhavedevelopedstandardsformeasuringthetypeandamountofsomeseriousairpollutants. Preventionisanotherkeytocontrollingairpollution.Theregulatoryagenciesmentionedaboveplayanessentialroleinreducingandpreventingairpollutionintheenvironment.第十九頁(yè)，共22頁(yè)。19Thelastbu