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AirPollutionKeyspeaker:kaihaoYuIntroductionWeallknowthatcleanairisimportanttogoodhealth.Whereveryougoandwhateveryoudo,youarealwayssurroundedbyaseaofgasesthatwecallair.Ifthereareimpurities(杂质)intheair,theymaybeabsorbedbyourbodiesandmakeusill.Weneedcleanair,butunfortunately,airpollutionisgloballypresent,especiallyincities.RevealacommonandseriousprobleminChinaFirst:CausesandcurrentstatusSecond:PollutiontypesThird:HazardandSolutionsNowtheairwebreatheispolluted.Whywastheatmospherepollution?Factoriesandautomobileexhaustarethemajorreasons.statuspointone:Acidrainkeywords:pH,C,SO2,southeastofchinapointtwo:Urbanairqualitykeywords:SO2,bothsidesoftheroadseverepollutioninnorthernwinterpointthree:Indoorairqualitykeywords:urbanrenovation,indooropenflameManypeoplespendlargeportionoftimeindoors-asmuchas80-90%oftheirlives.Wework,study,eat,drinkandsleepinenclosedenvironmentswhereaircirculationmayberestricted.Forthesereasons,someexpertsfeelthatmorepeoplesufferfromtheeffectsofindoorairpollutionthanoutdoorpollution.pollutiontypes:1,nitrogenoxide(NOx)Istherepresentativeifatmosphericpollutioncausessubstance.Thereasoniscausedbynitrogenoxidesofboiler(锅炉),automobileetcdischargesmoke.Thiskindofsmokeafterburningintheairasnitricoxideinline,airbecomenitrogendioxide.Nitricoxideisthereasoncausingacidrain.2,floatingparticleshapematerial(SPM浮游粒子状物质)Materialisinairzooplanktonfloatingsubstance,isoneoftheatmosphericpollutionofpollution.Inaddition,thesmokefromfactorycaremissions,outsideofman-madefactorssuchasvolcano,forestdisastersoccurnaturallynaturaldisasterisalsooneofthereasonsit.Floatingparticleshapematerialisharmfultohumanhealthofatmosphericpollutionsubstances,cancauserespiratorypatientsriseofmortality.3,photochemicalPhotochemicalcars,factories,etcokindantoisthenitrogenoxidesandhydrocarbon（碳氢化合物）dischargeatmosphericpollutionsubstancessuchaswiththesun'sultravioletraytohumanbodyproduceschemicalreaction,theeffectsofatmosphericpollutionsubstances,iswhytuckphotochemical.Whenokindantohighconcentrationofchemicalwhencanleadtoeyes,throatuncomfortable.4,sulfurdioxide(SO2)sulfonylureasSo2iscoal,oilburningsulfonylureaswhenatmosphericpollutionproduced.Characteristicsofsulfurdioxidelikeaneggsulfonylureaswhenthesmellofrottingout.Theonsetofpollutioncausedasthma（哮喘）reasoniscausedbysulfurdioxidesulfonylureasatmosphericpollution.5,carbonmonoxide(CO)Carbonmonoxideisincompletecombustionbyoilcausedinsipidity,odourless,colorless,nostimulationatmospherepollutants.Carbonmonoxideisveryterribleatmosphericpollutants,ifabsorbedalotofcarbonmonoxidecanleadtodeath.Hazardofairpollution(1)Tohumanhealth(2)Toanimalsandplants(3)ToweatherandclimateStudieshaveestimatedthatthenumberofpeoplekilledannuallyintheUSalonecouldbeover50,000.Olderpeoplearehighlyvulnerabletodiseasesinducedbyairpollution.Thosewithheartorlungdisordersareunderadditionalrisk.Childrenandinfantsarealsoatseriousrisk.Diseasessuchasbronchitis（支气管炎）,lungcancer,andheartdiseasemayalleventuallyappearinpeopleexposedtoairpollution.Lookattheireyes….Howpoor…Airpollutantssuchasozone,nitrogenoxides,andsulfurdioxidealsohaveharmfuleffectsonnaturalecosystems.Theycankillplantsandtreesbydestroyingtheirleaves,andcankillanimals,especiallyfishinhighlypollutedrivers.Theairpollutionbringsussomanypainandburden,sonext.Weshouldknowhowcanwepreventthedamagingeffectsofairpollution?Onthewhole,theelimination（排除）ofairpollutionneedstheco-efforts（努力）fromthegovernment,thepublicandtheenvironments.Thisproblemwillbesolvedonlywiththehelpofscienceandtechnology.Thefirststeptosolvingairpollutionisassessment.Researchershaveinvestigatedoutdoorairpollutionandhavedevelopedstandardsformeasuringthetypeandamountofsomeseriousairpollutants.Preventionisanotherkeytocontrollingairpollution.Theregulatoryagenciesmentionedaboveplayanessentialroleinreducingandpreventingairpollutionintheenvironment.Thelastbutnottheleast,weeverybodyshouldbeawareoftheimportanceoftheairandtakeactionstoprotectit.onlyinthiswaycanwehaveabrighterandbetterfuture.Solet'smoveup.Thankyou~~~