七大环境污染类型-PPT.ppt

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typesofenvironmentalpollutionsNuclearPollutionDesertificationGreenhouseEffectlightpollutionwaterpollutionpm2.5whitepollution1

*nuclearpollution

Contents1.Sourceofways2.Definition3.Dangersofnuclearpollution4.relatedaccidents5.individualsteps2

1.Sourceofways(cause)Nuclearweaponstest,use,theleakingfromnuclearpowerplant,industrialormedicaluseofnuclearmateriallossandsoon.Nuclearexplosion:thermalradiationdamage(热辐射伤害),nuclearradiationdamage(核辐射伤害),radioactivelifetime(放射性存留).3

2.DefinitionNuclearpollutionmainlyreferstotheenvironmentaldamageiscausedbythereleaseofradioactivematerial(核辐射),includingnuclearradiation(核辐射),atomicdust(原子尘埃)andotherpollutioncausedbyitself,aswellasthesecondarypollutant(次生污染)isbroughtbythosematerials,suchasthehurtstohumanandanimalbythewaterwhichwaspollutedbyneclearmaterials.4

3.DangersofnuclearpollutionPeoplewillappearthosesymptoms:dizziness,headache,lossofappetite,ifcountinue,theywillappearthesymptomofleukopenia(白细胞)andthrombocytopenia(血小板减少).Iftheultradoseofradiationpersistinpeoplesbodyforalongtime,itcancausetumorh(肿瘤),leukemia(白血病),andgeneticdisorder.5

4.relatedaccidentsTheformerSovietUnionChernobylaccident(苏联切尔诺贝利核电站事故):TheChernobylaccidentinUkrainein1986wastheworstintheindustryshistory,asanexplosionledtoacloudofradioactivematerialbeingspewedoverbigpartsofEurope.6

TheU.S.ThreeMileIslandnuclearaccident(美国三里岛核电站事故):TheaccidentattheThreeMileIslandnuclearplantinPennsylvaniain1979wasthebiggestinU.S.history.7

ThenuclearaccidentinFukushimaNuclearPlantinJapan(日本福岛核电站事故):ThecrisisattheFukushimaDaiichinucl