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Multiwavelength spectrophotometric determination of acidity constants of 1-(2-thiazolylazo)-2-naphthol in methanol-water mixtures

Multiwavelength spectrophotometric determination of acidity constants of 1-(2-thiazolylazo)-2-naphthol in methanol-water mixtures
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摘要 The acid-base properties of 1-(2-thiazolylazo)-2-naphthol (TAN) in mixtures of methanol-water at 25℃ and an ionic strength of 0.1 mol/L are studied by a multi-wavelength spectrophotometfic method. The acidity constants of all related equilibria are estimated using the whole spectral fitting of the collected data to an established factor analysis model. DATAN program was used for determination of acidity constants. The corresponding pKa values in methanol-water mixtures were determined. There is a linear relationship between acidity constants and the mole fraction of methanol in the solvent mixtures. The acid-base properties of 1-(2-thiazolylazo)-2-naphthol (TAN) in mixtures of methanol-water at 25℃ and an ionic strength of 0.1 mol/L are studied by a multi-wavelength spectrophotometfic method. The acidity constants of all related equilibria are estimated using the whole spectral fitting of the collected data to an established factor analysis model. DATAN program was used for determination of acidity constants. The corresponding pKa values in methanol-water mixtures were determined. There is a linear relationship between acidity constants and the mole fraction of methanol in the solvent mixtures.
出处 《Chinese Chemical Letters》 SCIE CAS CSCD 2007年第8期989-992,共4页 中国化学快报(英文版)
关键词 TAN Acidity constants METHANOL SPECTROPHOTOMETRY DATAN TAN Acidity constants Methanol Spectrophotometry DATAN
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参考文献12

  • 1Valfredo Azevedo Lemos,Elenir Souza Santos,Moacy Selis Santos,Regina Terumi Yamaki.Thiazolylazo dyes and their application in analytical methods[J].Microchimica Acta (-).2007(3-4)
  • 2Mikael Kubista,Ismail Hassan Ismail,Amin Forootan,Bj?rn Sj?green.Determination of Protolytic Constants by Trilinear Fluorescence Spectroscopy[J].Journal of Fluorescence.2004(2)
  • 3D.Kara,M.Alkan. Spectrochim.Acta Part A . 2000
  • 4F.Rived,I.Canals,E.Bosch,M.Roses. Analytica Chimica Acta . 2001
  • 5A.Safavi,H.Abdollahi. Talanta . 2001
  • 6M.Kubista,I.H.Ismail,A.Forootan,B,Sjogreen. J.Fluorescence . 2004
  • 7V.A.Lemos,E.S.Santos,M.S.Santos,R.T.Yamaki. Microchimica Acta . 2007
  • 8G.Douheret. Bulletin de la Societe Chimque de France . 1968
  • 9K.L.Cheng,K.Uneo,T.Imamura.CRC Handbook of Organic Analytical Reagents[]..1982
  • 10A.Elbergali,J.Nygren,M.Kubista. Analytica Chimica Acta . 1999

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