Abstract
In 0.2 mol/L NaOH, cystine can cause an sensitive incision at -0.5 V (vs.SCE) of cathodic branch of dE/dt_E curve or second order differential simple oscillogram. Based on the oscillographic charateristic, second order differential simple oscillographic voltammetry was applied to the determination of cystine in tablet. The linear range and the detection limit for determination of cystine were 2.5×10-6～3.5×10-5 mol/L and 1.0×10-6 mol/L, respectively. The relative standard deviation for 2.000×10-5 mol/L cystine was 1.8% (n=5).
Publication Date
2003-11-28
Online Available Date
2003-11-28
Revised Date
2003-11-28
Received Date
2003-11-28
Recommended Citation
Fu-Fang TAO, Jian-Bin ZHENG.
Determination of Cystine by Second Order Differential Simple Oscillographic Voltammetry[J]. Journal of Electrochemistry,
2003
,
9(4): 471-474.
DOI: 10.61558/2993-074X.1535
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol9/iss4/15
References
[1] ZhaoGJ.EncyclopediaofChineseChemicalPhysic.(Secondedition)[M].Peking:Newtimespublishingcompany,1999.717.
[2] CiYX,TieJK,WangQW,etal.Flowinjectionandliquidchromatographicpostcolumndetectionofaminoacidsbymimeticperoxidasecatalyzedchemiluminescencereaction[J].Anal.Chim.Acta,1992,269(1):109～114.
[3] HuKS,LiCZ.Quantitativedeterminationofcystinebyoptialmethod[J].ShengyangYiyao(inChinese),1994,9(4):11～12.
[4] EngstroemA,AnderssonPE,JosefssonB,etal.Determinationof2＿(9＿anthryl)chloroformate＿labeledaminoacidsbycapillaryelectrophoresisandliquidchromatographywithabsorbanceorfluorescencedetection[J].Anal.Chem.,1995,67(17):3018～3022.
[5] LuCM,ZhangXL.Studyonthedeterminationcystinebysingle＿sweeposcillographicpolarography[J].ChineseJournalofAnalysisLaboratory,1994,13(6):49～51.
[6] ZhangXL.Studyonthepolarographicabsorbtivewaveofthecomplexofcystineandcadmiun(Ⅱ)[J].PhysicalTestionandChemicalAnalysisPartB:ChemicalAnalysis,1998,3(7):313～314.
[7] ChengB.Compareofquantitativedeterminationmethodofcystineandcystineintablet[J].JournalofChineseBiochem.Medicaine,1996,17(1):20～21.
[8] ZhengJB,ZhangXQ,GaoM,etal.Astudyonmulti＿ordersemidifferentialoscillographicchronopotentiometricinstrument[J].InstrumentationScience＆Technology,2000,28(5):403～411.
[9] GaoH.OscillographicTitration[M].Nanjing:NanjingUniversityPress,1990.35～37.
