钛盐光度法测定Fenton氧化中的过氧化氢

Fenton1,2,2,1,1(1.,518055;2.,150090):Fenton,,,Fenton,,,:H2O2;;;Fenton:TU991:C:1000-4602(2006)04-0088-04SpectrophotometricDeterminationofHydrogenPeroxideinFentonReactionwithTitaniumOxalateJIANGCheng2chun1,PANGSu2yan2,MAJun2,XIEWei2ping1,ZOUYuan1(1.SchoolofCivilandStructuralEngineering,ShenzhenPolytechnic,Shenzhen518055,China;2.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTech2nology,Harbin150090,China)Abstract:SpectrophotometrywasusedfordeterminationofhydrogenperoxideinFentonreactionwithtitaniumoxalate.Inthemethod,thehydrogenperoxidewasreactedwithtitaniuminacidicmediatoformasteadyandorangecomplexfordeterminationofH2O2contentbyspectrophotometry.Theinfluenceoffactorssuchastitaniumoxalatedosage,colorationperiod,acidityofsolutionandinterferingiononthemeasurementresultwasinvestigated.Thetitaniumoxalatemethodwascomparedwithothermethods,su2chaspotassiumpermanganatemethodandiodometrymethodinthedistilledwatersystems,andthead2vancedoxidationsystemwithorganiccompoundandFentonreagent.Theresultshowsthatthetitaniumoxalatemethodischaracterizedbysimple,accurate,andgoodselectivity,andcaneffectivelyeliminatethedrawbackstotheredoxprocess.Keywords:hydrogenperoxide;titaniumpotassiumoxalate;advancedoxidation;Fenton:(50478049);(04011215),[1][23],,,Fenton,,,1mmol/L;Fenton8822420062CHINAWATER&WASTEWATERVol.22No.4Feb.2006,,,,Fenton[23],-(pertitanicacid),,,Fenton,Fenton,1111,,,,,,,,,,,,721W;PHS-3CpH;95-1;SHZ-B112,25mL,3.0mol/L0.05mol/L,10min,1cm,,Fenton,100mL(0.1mmol/L),,,pH,H2O2,30min,NaOHpH10,H2O222112.1.1,,400nm2.1.2,,0.48mol/L,,2.1.30.05mol/L,,8.0mmol/L,2.1.4,,,,,,10min2.1.5,8.0mg/L(5%),:K+Na+NH+4NO-3CO2-3Cl-(2103mg/L),Ca2+Mg2+(1103mg/L),Cu2+(100mg/L),Mn2+(50mg/L),Fe3+(3mg/L)2122.2.11,040mg/LA,A=0.0297CH2O2,r=0.9999=1010L/(molcm)1Fig.1StandardcurveofH2O2determinedbytitaniumoxalatemethod984,:Fenton22(IUPAC)DL,1.0410-3(n=24),DL=0.1mg/L,,,2.2.21RSD02.53%,99%101.5%,1Tab.1Resultsofrecoveryexperimentofstandardaddition/(mgL-1)RSD/%H2O2/(mgL-1)H2O2/(mgL-1)/%2.232.5324.24100.52.53024.51992.751.7324.78101.52132.3.1,,22Tab.2ComparisonbetweenpotassiumpermanganatemethodandtitaniumoxalatemethodH2O2/(mgL-1)0.991.531.972.563.053.503.994.484.97/(mgL-1)1.011.492.012.543.053.534.034.555.04/%2.54-2.612.03-0.780.000.861.001.561.412.3.2,,,3(8mg/L),3H2O2Tab.3ComparisonofdeterminationresultsforhydrogenperoxideH2O2/(mgL-1)/%102.03101.99-0.04102.03113.9011.622.3.3FentonFenton2,Fenton,(1.70V),,,,I-I2,,,,Fenton,,,,2Fig.2Comparisonofdeterminationresultsbydifferentmethods3max=400nm0.48mol/L8mmol/L10min,1010L/(molcm),0.1mg/L,;Fen2ton,09422,,Fenton,:[1]EnricBrillas,JuanCasado.Anilinedegradationbyelec2tro2Fentonandperoxi2coagulationprocessusingaflowre2actorforwastewatertreatment[J].Chemosphere,2002,47:241-248.[2]GallardH,DeLaatJ.KineticmodellingofFe()/H2O2oxidationreactionindiluteaqueoussolutionusingatrazineasamodleorganiccompound[J].WatRes,2000,34(12):3107-3116.[3]DeLaatJ,GallardH.CatalyticdecompositionofhydrogenperoxidebyFe()inhomogeneousaqueoussolution:mechanismandkineticmodeling[J].EnvironSciTechn2ol,1999,33:2726-2732.:[phone]E-mail:[e-mail]:2005-06-05,,,1,,,,,,,1.31.45V/,35mA/(Ah),,,,2030mm,,;2,,,,,,,,0.2C5A1.0V,CO2,50g/L,,,,,,,5h0.2C5A,,,,5h0.2C5A45h,,,()194,:Fenton22