微囊藻毒素与饮用水有机提取物联合致dna损伤研究

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1、华中科技大学硕士学位论文StudiesonthecombinedeffectofDNADamageinducedbymicrocystinsandorganiccompoundsextractedfromdrinkingwaterMasterCandidate:FenghongWuSupervisor：ProfessorZhigangWuAbstractSincethe1970s,theresearchonSynthetictoxicorganiccompoundshasbecomeahottopicaroundtheworld.The

2、monitoringandcontrollingoftoxicorganiccompoundsinthedrinkingwaterhasbecomeahotspotofresearchfieldofenvironmentalhealthinthedevelopedcountries.Inthepresent,thequantityofSyntheticorganiccompoundshasamountedto250millionton.Theamountofvarietyoforganiccompoundshasbeenincreasi

3、ngto7million,anditsamountkeepsonincreasingbythevelocityofthousandsperyear.Itwasestimatedthattenthousandsorganiccompoundsespeciallytheindustrialpollutantshasreleasedtotheenvironmentthroughwaters.andsomeoftheseorganiccompoundsaretoxic,whichcaninducecancer、mutationandterato

4、genicity.Theseorganiccompoundsaredifficulttodegradationbythemicroorganisminnature,buttheyareeasytocumulateandspreadintheenvironment.Someofthesecanevengetintohumanbodydirectlythroughdrinkingwater.Becauseofthevarietiesoforganiccompoundsanditslowconcentration(µg/L,ng/L)indr

5、inkingwater,itisdifficulttobedetectedandmonitoredbyusingordinarydetectingdevicesandequipments.Inordertodetecttheseorganiccompounds,besidessomehighsensitivityandaccuracyequipments,wealsoneedthehighefficientenrichingtechnique.MacroporousadsorptionResinisakindofResinswhichd

6、evelopedfrom1970s.ThisResinisanewtypeofPolymerAbsorbentwhichcontainsthree-dimensionalporousstructure.ItshasstablePhysicalandchemicalpropertiesandResinisallowedtouseinacid、AlkaliandOrganicSolvent.ThisResincanconcentrateVII华中科技大学硕士学位论文andseparatespecifickindsoforganiccompo

7、undsbutdonotbeinterferedbythemineralsaltandLow-molecular-weightcompounds.MacroporousadsorptionResinhasstrongadsorptioncompetenceandhighEnrichmentmultiples.ItcanbeRegeneratedandlesspollution.Itiswidelyusedinenrichingorganiccompoundsfromwatersforitswellperformance.Withthei

8、ncreasingeutrophicationoflakes,thehazardcausedbyalgalbloomhasbeenconcernedbymanyenvironmentalscientists