氟离子选择性电极测定粉煤灰中铝

:1000-7571(2004)02-0045-03,,3,(,317000):pH5,,NaF:NaF6g/mL,EC(Al3+)(r=019998),05g/mL,(RSD=2144%):;;:O65711:B:2003-06-10:(200337),[1],,,,pHpH[2-3],pH510,,F-EC(Al3+),,1111pHS23C;802C();842();pF21();:10mg/mL,110000g,25mL6mol/L,,,100mL;:1mg/mL,[4];:110000mol/L,2019941g,500mL,;(VC):110000mol/L,1716140g,100mL;HAc-NaAc(pH5):51gNaAc,716mL,250mL,pH,112F-6108g/mL,,015mLVCpH5,(1min),Al3+(g/mL)E(mV),,EC(Al3+),,,E,Al3+2211pH[3],OH-,pH,LaF3:LaF3+3OH-La(OH)3+3F-,pH,HF-2pH5,F-Al3+,Al3+F-,(mV),pH55424220044MetallurgicalAnalysisVol.24,No.2April,2004212F-F-1152,3104,6108,7160g/mL,Al3+(E),,,11F-Table1EffectoftheconcentrationofF-onthelinearrelationshipofregressionequationsCF-(g/mL)CF-inbasesolutionRegressionequationr(g/mL)Linearrange1152E=2815C(Al3+)+1117019975023104E=2013C(Al3+)-017019990036108E=1219C(Al3+)-413019997057160E=1012619C(Al3+)-1167019986071,6108g/mL,(r=019997),(05g/mL),F-213,C(Al3+)=3104g/mL,C(F-)=6108g/mL,6,Mg2+,Ca2+,Cu2+,Zn2+Cd2+100g/mL,,Fe3+20g/mLFe3+Al3+,1mol/LVCFe3+(2),Fe3+05mg(50mL),VC012215mL,100g/mLFe3+2VCFe3+Table2MaskingeffectofVConFe3+VC(mL)(mV)Found0mgFe3+3mgFe3+5mgFe3+0230234237012-231231015-231231110-231231215-231231214015mLVC,F-6108g/mL,pH5,EC(Al3+),,EC(Al3+):E=1313C(Al3+)-519,r=019998,Al3+,3[3]3AlTable3Determinationofaluminiuminstandardsolutiong/mLConcentrationofAlFound(%)RE21001195-215031002192-216741003190-21563015000g,2mLHCl,5mLHNO3,,2mL15mLHF,,(),[5]2mL,;2mLHNO3,,,20mL,,,100mL,,1010mL,50mL,,6,4Al0128%,(0129%,n=6)4Table4Determinationresultsofaluminuminsamplen=6,g/mLSample3FoundAverageS(%)RSD2177,2170,21772185,2177,21702176017521443E=1313C(Al3+)-519:[1],,,,.[J],2000,13(3):511[2].[M]1:,1984.3221[3],,,.[M]1:6424220044MetallurgicalAnalysisVol.24,No.2April,2004,199012751[4],,,,.[M]1:,1979.7,1831[5],.[J],1996,12(2):211DeterminationofaluminiuminflyashbyfluorionselectiveelectrodeLIFang,JIAWen2ping,PANFu2you,YUXuan2chong(DepartmentofChemistry,SchoolofLifeSciencesandPharmaceutialandChemicalEngineering,TaizhouUniversity,Linhai317000,China)Abstract:Afluorionselectiveelectrodemethodforthedeterminationofaluminiuminflyashisstudied1TheconcentrationofNaFandtheeffectofexistingionsonthedeterminationresultsofaluminiumarediscussed1TheresultsshownthatalinearrelationshipofEagainstC(Al3+)isgood(r=019998)andthelinearrangeis05g/mLforAlwhentheconcentrationofNaFisabout6g/mL1Themethodhasbeenappliedtothedeterminationofaluminiuminflyashwithsatisfactoryresults(RSD=2144%)1Keywords:flyash;fluorionselectiveelectrode;aluminiumGB/T228-2002GB/T228-2002200271,,20022003,200446811,GB/T228-2002,,GB/T228-2002:11,21():(1)GB/T2975-1998;(2)GB/T8170-1987;(3)GB/T12160-2002;(4)GB/T16825-1997;(5)GB/T1760011-1998:;(6)GB/T1760012-1998:3141GB/T228-2002(),600,:;:010-62181163-11010-62181165-11010-62182398;:010-62181163-13010-62182398;:7614;:100081;E-mail:[e-mail]2004417424220044MetallurgicalAnalysisVol.24,No.2April,2004