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过硫酸盐降解土壤中氯霉素、甲砜霉素和氟甲砜霉素的研究 Title:StudyontheDegradationofChloramphenicol,Thiamphenicol,andFlorfenicolinSoilbyPersulfate Abstract: Thepresenceofantibioticsinsoilsposesseriousenvironmentalconcernsduetotheirpotentialadverseeffectsonecosystemsandhumanhealth.Thisstudyaimedtoinvestigatethedegradationofthreecommonlyusedveterinaryantibiotics,namelychloramphenicol,thiamphenicol,andflorfenicol,insoilusingpersulfateasanoxidativeagent.Thedegradationefficienciesandmechanismswereexploredthroughlaboratoryexperiments.Theresultsprovidevaluableinsightsintothepotentialapplicationofpersulfatefortheremediationofantibiotic-contaminatedsoils. Keywords:antibiotics,degradation,persulfate,chloramphenicol,thiamphenicol,florfenicol 1.Introduction: Theuseofantibioticsinhumanmedicineandveterinarypracticeshasincreasedsignificantlyinrecentyears.Consequently,theseantibioticsentertheenvironmentprimarilythroughthedisposalofwastewater,manure,andanimalcarcasses.Soil,asavitalcomponentoftheenvironment,canbecomecontaminatedwithantibiotics,leadingtopotentialecologicalandhumanhealthrisks.Amongthecommonlyusedveterinaryantibiotics,chloramphenicol,thiamphenicol,andflorfenicolhavegainedincreasingattentionduetotheirbroadspectrumofactivityandpotentialadverseeffects.Therefore,itiscrucialtodevelopeffectiveandenvironmentallyfriendlymethodstodegradetheseantibioticsinsoil. 2.Methodology: 2.1SoilSampleCollectionandPreparation 2.2ExperimentalSetup 2.3PersulfateActivation 2.4AnalyticalTechniques 3.ResultsandDiscussion: 3.1DegradationEfficiency 3.2DegradationMechanisms 3.3FactorsInfluencingDegradation 3.4PersistenceofDegradationProducts 4.Conclusion: Persulfatewasfoundtobeaneffectiveoxidantforthedegradationofchloramphenicol,thiamphenicol,andflorfenicolinsoil.Thedegradationefficiencieswereinfluencedbyfactorssuchaspersulfatedosage,pH,soilorganicmatter,andinitialantibioticconcentration.Thedegradationmechanismsinvolvedtheoxidationoftheantibioticsbysulfateradicalsproducedfrompersulfateactivation.Thepersistenceofdegradationprodu