The Photodegradation of Chlorpyrifos.pdf

1、浙江大學(xué)博士學(xué)位論文ThePhotodegradationofChlpyrifos姓名：JalalA.M.AWADH申請學(xué)位級別：博士專業(yè)：AgroEnvironmentalProtection指導(dǎo)教師：FanDefang20020101ABSTRACTPhotodegradation0fchIorpynfoswasstudiedindifferentkindofwaters(soiIsuspensionwaterdistⅢedwafe

2、rpondwater，nverwaterandgroundwater)underthe川uminaUonofthreelightsources(Uv254uv365andSimulaaonssunI咱ht(vIS)wereinvestigatedTherate0fdegradationOfchIOrpyrifoswasasf0ow：di鰣lIedwatergroundwater一verwaterpondwaterso“suspensiO

3、nwater，thedeg舊d甜On晤【eshOwedtofasterunderUv254thannUv365andVlSTheeffectofIightintens時onthedeg舊dationofchIorpynfosndistmedwaterunderUV2S4UV一365andVlSwe陀alsDinvestIga例廿1edegradaU0nratewasshOw酣tObeincreasedbyincreasingtheIig

4、ht眥ens計ypHVaIueandtheconcen仃ationofchIorpynfosalsoeffectsthedeg陌daaonofchIorpy^fosinwaterInsoilthephOtodegradanOn0fchlOrpynfosOnsixdif『erentte)(tureOfsOsandunderU＼，254，Uv365andVISsources，thedegradatjOnratewasdire吐lyrelat

5、edtotheorganicmattercontentofthesoilIightintensityconcentra撕onofchIo甲ynfosandthemoisturelevelwereshawedtoe訊jctthedegrada石On陽leofchIorpynfosonsosu向ceThedegrada廿OnrateofchJOrpynfosonIeafsu內(nèi)ce，jnleafe)(tractandindutedIeafex

6、tradwereinvestigatedunderva—ousIjghts(Uv254，Uv365，SimuI酬onssunghtandnatu怕lsu州ght)the他su臨sh洲倒thatfasterdeg舊da石on館tewe倫obsen，edonIeafsu—acethanInIeafe)ctradThee懺ectOfhumicsubstancesshOwedthat，thedeg陽datiOn陽fe0fchlo甲ynfoswa

7、sdecreasedwhenadd_nghumicacid(HA)andincreasedwhenaddingfuIvIcacjd(FA)thecompanIedeffectofbothHAandFAshawedtoacceleratethede9rada廿onofchlO巾ynfosbutiswasslowerwhe幾companngtOthee懺ectwhenaddingFAaloneThephotodegrada石on0fchlo

8、rpyr訐osinsoilwasinVestjgatedwhenad酬ngsomeatherpesticidesandexpo∞dIoUV254SeVenorgan印hosphoruspe蜘cide(omethoate，methamedafos，們chIomndimethoale，maIathion，phosmetandfenthjon)showedtohavephotoquenche怖ciencyagainstthephotodeg陽

9、dationratofchlorpynfos，w川epyrethroidjnse甜cldea色nvalerateesfenvaIerate，cyhalothine，cypenTlethnndeItam劬^netetramethnn)showedtoacceleratethedegradationrateOfchIorpy帕sexceptforfenvaIe怕tewhichshowedtohaVephOtoquenche偉ciencyPh

10、otocatalysisstudyofchIo啊nfoswascondu曲edtoinVes廿gateThephotodeg陽da廿onrateofchIo啊nf03inwaterwhenaddingsOmephotOsensmzersresu代sshOwedthatthepresenceofPbOTi02Zn0，A∞toneandH202wiacceIe怕tethedegrada們nofchlorpy卅OswhenexposedtoU

11、V254Jjghtsoun∞Atthehjghcon∞n仃a廿onofthechemi∞Isu∞d(01％)andAcetone(1％)thephotolycicrate0fchIorpyrifosinwaterwasncreasedbythe啊o、ⅣingorderPb01102ZnOAcetoneH202Whentheconcen仃a廿ondecreas酣to(001％)andAoetone(1％)thephotoI州c陽teofc