对抗坏血酸测定水中总无机磷的改进

董振霞(河南省中原大化集团有限责任公司,郑州457000):,,,,,:;;;;:X830.2:A:16711556(2010)04005203:20100127:20100308:(1981),,,Email:dajiang1019.163.comImprovementinDeterminingtheTotalInorganicPhosphoruswithAscorbicAcidDONGZhenxia(HenanZhongyuanDahuaGroupCo.,Ltd.,Zhengzhou457000,China)Abstract:Thispapermainlystudiesthemethodofdeterminingthetotalinorganicphosphorusinwaterwithascorbicacid.Thismethodcansavetheamountofreagentandthetimeoftesting,andreducethepollutionofenvironmentandthebadimpactonthehealthofpersonnelbecauseascorbicacidwithlowconcentrationisnontoxic.And,withthehighrecoveryrate,itisaneffectiveanalyticalmethodofdeterminingthetotalinorganicphosphorusinwater.Keywords:ascorbicacid;reducingagent;totalinorganicphosphorus;boiling;absorbance0,,,,,,,,,,,,,L80%[1],,,,11.17200:5%;1%;1%;10mg/L;1.2(),,,1.310mL50mL,1mL5%5mL1%,5mL,20mL,,10min;,,,,50mL;2cm660nm,17420107安全与环境工程SafetyandEnvironmentalEngineeringVol.17No.4Jul.201022.1(PO3-4),111Table1DatarelationshipbetweenabsorbanceandreductantconcentrationC/(%)0.20.40.60.81A0.3790.3830.3830.3830.3831ACFig.1Curveofphosphatestandardsolutionabsorbanceandreductantconcentration11:0.4%(CPO3-4)10mg/L,,(),[2],,,,,2.20.4%0.4%,222Table2Datarelationshipsbetweenabsorbanceandboilingtimet/(min)05101520A00.3780.3830.3830.3832Fig.2Curveofphosphatestandardsolutionabsorbanceandboilingtime22:10min,,1h:,[3],,,,2.350mL,1.3(),10mg/L,333Table3AbsorbanceofdifferentamountsofthephosphateworkingsolutionVPO3-4/(mL)0246810MPO3-4/(mg)00.020.040.060.080.10A00.0780.1550.2330.3090.3833Fig.3Curveoftheworkofphosphatestandardsolution3:y=0.2606x-0.0003,R2=0.999953第4期董振霞:对抗坏血酸测定水中总无机磷的改进,(CPO3-410mg/L),2.40.4%10min,,1.3,(CPO3-410mg/L),C,C=(0.2606A-0.0003)!1000/V0=(260.6A-0.3)/V0:C(mg/L);V0(mL);A100%,10mg/L,44Table4RelationshipbetweenworkingsolutionabsorbanceandconcentrationA0.3820.3830.3830.3820.383C/(mg∀L-1)9.92510109.925104C=(9.925!2+10.00!3)#5=9.97(mg/L)P=(9.97#10.00)!100%=99.70%P,,,3(1),,,,,,(2),,,:[1].[M].:,1997.[2].[M].:,1987.[3].()[M].:,1995.(36)3(1),,.(2),HgAsCuPbCdCrZn(3),,;HgCdCrCuAsPbZn(4),:[1].[J].,1996,(5):361-364.[2]Wang,W.X.,I.Stupakoff,N.S.Fisher.Bioavailabilityofdissolvedandsedimentboundmetalstoamarinedepositfeedingpolychaete[J].MarineEcologyProgressSeries,1999,178:281-293.[3].[S].1991.[4],.[M].:,1994.[5].[J].,2002,21(3):39-42.[6],,,.[J].,2008,34(3):13-20.[7],.Cu,Pb,Zn,Cd[J].,1992,23(1):39-48.[8],,,.[J].,2003,22(1):36-42.[9]Yap,C.K.,A.Ismail,S.G.Tan,etal.CorrelationsbetweenspeciationofCd,Cu,PbandZninsedimentandtheirconcentrationsintotalsofttissueofgreenlippedmusselPernaviridisfromthewestcoastofPeninsularMalaysia[J].EnvironmentInternational,2002,28:117-126.[10]James,P.M.,A.R.Paul,R.C.Robisch,etal.ElementsinfishandsedimentfromthePacificcoastoftheUnitedStates[J].MarinePollutionBulletin,1998,37(1-2):56-66.[11]Mull,E.R.G.IndexofgeoaccumulationinsedimentsoftheRhineRiver[J].Geojournal,1969,2(3):108-118.[12]Hakanson,L.Anecologicalriskindexforaquaticpollutioncontrol:Asedimentologicalapproach[J].Wat.Res.,1980,14:975-1001.54安全与环境工程第17卷