吖啶橙分光光度法测定水中痕量二氧化氯梁爱惠

27120072JournalofGuilinUniversityofTechnologyVol.27No.1Feb.2007:1006-544X(2007)01-125-03梁爱惠,蒋治良(,　541004)　:pH=10.5NH4Cl-NH3,275490nm2.ClO2,2,490nmClO20.080～5.0μg/mL,ClO2(3σ)0.04μg/mL.、、、、ClO2,,.:;;:O657.3　　　　　　　　　　　　　:A、、、、pH、,(THMs),、、、、、、[1],.1.0μg/mL.,、、.[2,3]、[4]、[5]、[6]、luminol[7].、;,[8],.-ClO2,、.11.1756CRT(),UV-3400().(500μg/mLClO2)([9]):NaClO2ClO2,NaClO2Cl2,ClO2.ClO22:(1),,,;(2),360nm,1400L/(mol·cm),.4℃,.1.0×10-3mol/L(acridineorange,AO);pH=10.5NH4Cl-NH3.1.210mL1.0mLpH=10.5NH4Cl-NH30.20mL1.0×10-3mol/LAO,5.0mL,.1cmA490nm.,Ab.ΔA490nm=Ab-A490nm.　:2005-04-12　:(0575042)　:(1965-),,,:.22.1(AS)AO,275490nm2(1a).,,AO.,2(1b、c).2,,,490nm.1　AO-ClO2Fig.1　AbsorptionspectraofAO-ClO2systema—pH=10.5,2.0×10-5mol/LAO;b—a+0.50μg/mLClO2;c—a+1.0μg/mLClO22.2　pHNH4Cl-NH3、、ClO2AO.,NH4Cl-NH3.2pH.,pHClO2AO.ClO2pH.,pH=10.5.2.3　AO3AO.AO4.0×10-5mol/L,AO,ΔA490nm;AO,ΔA490nm.,4.0×10-5mol/LAO.2　pHFig.2　EffectofpHvalue2.0×10-5mol/LAO+2.0μg/mLClO23　AOFig.3　EffectofAOconcentrationpH10.5+2.0μg/mLClO22.41.0μg/mL.,100ClO-2、ClO-3、EDTA、CO2-3、PO3-4、Ca2+、Cd2+、Al3+、Zn2+、F-、C2O2-4;50Cl2、Fe3+、Ni2+、Cu2+、Br-、Mn2+、Ba2+、Mg2+、、、、,10ClO-..2.5,,ΔA490nm,ΔA490nm.,(c)0.080～5.0μg/mLΔA490nm.ΔA490nm=0.122c+0.002,0.9986.0.04μg/mLClO2.2.6　1　Table1　AnalyticalpropertiesofsomespectrophotometricmethodsforClO2/(μg·mL-1)/(μg·mL-1)　　B0.6～400.04Cl2、ClO-2[3]0.10～1.90.05Cl2、ClO-2[9]N,N-0.6～400.3Cl2、ClO-2[10]0.24～240.1Cl2、ClO-2[11]0.06～2.00.02[13]0.5～5.00.2Cl2、ClO-2[1]B-0.01～1.00.0008Cl2、ClO-2[13]0.08～5.00.04Cl2、ClO-2126　　　　　　　　　　　　　　　　　　　　　2007(1)[1-7,9-13],、、,.2.710mL,,,(2).3　　pH=10.5NH4Cl-NH3,ClO2AO,、、ClO2.,.2　(n=5)Table2　AnalyticalresultsforClO2inwatersampleClO2/(μg·mL-1)RSD/%ClO2/μgClO2/μg/%[3]/(μg·mL-1)10.6102.51.000.9595.00.63220.8301.91.000.9898.00.83230.9202.91.001.021020.95840.6862.81.001.001010.656:[1],.[J].,2000(7):21-26.[2],,,.[J].,1989,6(4):196-198.[3]ZhangX,ZhaoJY.Spectrophotometricdeterminationofchlo-rinedioxideinwaterusingrhodamineB[J].Analyst,1995,120:1199-1200.[4]TakahoW.Simultaneousdeterminationofchorinedioxideandhypochloriteinwaterbyhigh-performanceliquidchromatogra-phy[J].JChomatographyA,1998,796:397-400.[5],,,.、[J].,1994,28(4):230-232.[6]TakahoW.Determinationofchlorinedioxideusing4-aminan-tipyrineandphenolbyflowinjection[J].AnalChimActa,1997,341:257-262.[7]SakaDJ,SmartRB.Chemiluminencencedeterminationofchlorinedioxideinfilmlowcell[J].JEnvironScitechnol,1985,19(5):450-454.[8],,.[J].:,2004,22(5):57-60.[9]FletherIJ,HemmingP.Spectrophotometricdeterminationofchlorinedioxideindrinkingwaterusingchlophonelred[J].Analyst,1985,110(6):196-198.[10]GordonG,CooperWJ,RiceRG,etal.DisinfectantRe-sidualMeasurementMethods[M].AmericanWaterWorksAssociation,Denver,CO,1992,142.[11]BarryC,KelvinROH.Spectrophotometricdeterminationofchlorinedioxideinlowconcentrationusinglissaminegreen[J].Analyst,1991,116(6):657-661.[12]ChenH,WangG,YuanL.Extractionspectrophotometricdeterminationoftracechlorinedioxidewithmethyleneblue[J].AnalLett,1997,30(7):1415-1421.[13].-B[J].,2002,14(2):75-76.SpectrophotometricDeterminationofTraceChlorineDioxideinWaterUsingAcridineOrangeLIANGAi-hui,JIANGZhi-liang(DepartmentofMaterialandChemistryEngineering,GuilinUniversityofTechnology,Guilin541004,China)Abstract:InpH10.5NH4Cl-NH3buffersolutions,therearetwoabsorptionpeaksat275and490nmforacri-dineorange.Whenchlorinedioxideisadded,thetwopeaksdecreasedsharply,showingthatthedecreasedab-sorbancevalueat490nmislineartochlorinedioxideconcentrationintherangeof0.080～5.0μg/mL.Thedetectionlimit(3σ)is0.04μg/mLClO2.AnewspectrophotometricmethodisproposedforthedeterminationofClO2insamplewater,withtheadvantagesofhighsensitivity,selectivity,simplicity,rapidityandaccuracy.Keywords:chlorinedioxide;acridineorange;spectrophotometry1271　　　　　　　　　　　　: