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Pure Appl. Chem., 1987, Vol. 59, No. 11, pp. 1549-1560


Reference value standards and primary standards for pH measurements in organic solvents and water + organic solvent mixtures of moderate to high permittivities

S. Rondinini, P. R. Mussini and T. Mussini

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  • Berezkin V. G., Sumina E. G., Shtykov S. N., Atayan V. Z., Zagniboroda D. A., Nekhoroshev G. A.: Effect of Chamber Gas Phase on Mobile Phase pH and on Separation Efficiency in TLC. A New Mode of Chromatography. Chroma 2006, 64, 105. <>
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  • Ballesteros O., Toro I., Sanz-Nebot V., Navalón A., Vílchez J. L., Barbosa J.: Optimization of the composition and pH of the mobile phase used for separation and determination of a series of quinolone antibacterials regulated by the European Union. Chroma 2002, 56, 413. <>
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  • Antonini D, Falciola L, Mussini P.R, Mussini T: Ionization constants ofo-phthalic acid in (propylene carbonate + water) and (ethylene carbonate + water), and thermodynamics of the cellPt|H2|HCl(m)| Hg2Cl2|Hg. K J CHEM THERMODYN 2001, 33, 1473. <>
  • Barbosa J, Barrón D, Jiménez-Lozano E, Sanz-Nebot V: Comparison between capillary electrophoresis, liquid chromatography, potentiometric and spectrophotometric techniques for evaluation of pKa values of zwitterionic drugs in acetonitrile–water mixtures. Analytica Chimica Acta 2001, 437, 309. <>
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  • Antonini D, Falciola L, Mussini P.R, Mussini T: Medium effects, comparability and predictability of pH-standards in aqueous+organic solvent mixtures: behavior of the (ethylene carbonate+water) and (propylene carbonate+water) systems. Journal of Electroanalytical Chemistry 2001, 503, 153. <>
  • Barbosa J., Barrón D., Cano J., Jiménez-Lozano E., Sanz-Nebot V., Toro I.: Evaluation of electrophoretic method versus chromatographic, potentiometric and absorptiometric methodologies for determing pKa values of quinolones in hydroorganic mixtures. J  Pharm Biomed Anal 2001, 24, 1087. <>
  • Barrón D., Jiménez-Lozano E., Barbosa J.: Capillary electrophoresis in mixed aqueous-organic media: Effect of tetrahydrofuran on mobilities, dissociation constants and separation of a series of quinolones. Chroma 2000, 52, 395. <>
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  • Barrón D., Buti S., Barbosa J.: Standardization of potentiometric sensors and acid–base behaviour of a series of bases in nitrobenzene. Analytica Chimica Acta 2000, 403, 349. <>
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  • Barbosa J, Barrón D, Butı́ S: Chromatographic behaviour of ionizable compounds in liquid chromatography. Part 1. pH scale, pKa and pHS values for standard buffers in tetrahydrofuran–water. Analytica Chimica Acta 1999, 389, 31. <>
  • Barbosa J, Marqués I, Barrón D, Sanz-Nebot V: The application of factor analysis to solvatochromic parameters and pHs values for the standardization of potentiometric sensors in mobile phases used in liquid chromatography. Trends in Analytical Chemistry 1999, 18, 543. <>
  • Marqués I, Fonrodona G, Butı́ S, Barbosa J: Solvent effects on mobile phases used in liquid chromatography: factor analysis applied to protonation equilibria and solvatochromic parameters. Trends in Analytical Chemistry 1999, 18, 472. <>
  • Barrón D., Butı́ S., Ruiz M., Barbosa J.: Evaluation of acidity constants and preferential solvation in tetrahydrofuran–water mixtures. J Polyhedron 1999, 18, 3281. <>
  • Barbosa J., Barrón D., Butı́ S., Marqués I.: Assignment of pHS values of reference buffer solutions for standardization of potentiometric sensors in THF–water. J Polyhedron 1999, 18, 3361. <>
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  • Barbosa J., Toro I., Sanz-Nebot V.: Acid-base behaviour of tripeptides in solvents used in liquid chromatography. Correlation between pK values and solvatochromic parameters of acetonitrile-water mixtures. Analytica Chimica Acta 1997, 347, 295. <>
  • Barbosa J., Marqués I., Fonrodona G., Barrón D., Bergés R.: Factor analysis applied to correlation between acidity constants of series of diuretics, quinolones and buffers, with solvatochromic parameters in water-acetonitrile mixtures. Analytica Chimica Acta 1997, 347, 385. <>
  • Barbosa J., Fonrodona G., Marqués I., Sanz-Nebot V., Toro I.: Solvent effects on protonation equilibria of peptides and quinolones by factor analysis applied to the correlation between dissociation constants and solvatochromic parameters in acetonitrile-water mixtures. Analytica Chimica Acta 1997, 351, 397. <>
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  • Barbosa J., Bergés R., Toro I., Sanz-Nebot V.: Dissociation constants and preferential solvation of fluoroquinolones in hydroorganic mixtures used in LC. Int J of Pharmaceutics 1997, 149, 213. <>
  • Rosés M., Bonet M.J., Bosch E.: Conductometric determination of dissociation constants of several acids and their tetrabutylammonium salts in propan-2-ol/water mixtures. Analytica Chimica Acta 1996, 333, 241. <>
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  • Barbosa J., Bergés R., Sanz-Nebot V.: Linear Solvation Energy Relationships in Reversed-Phase Liquid Chromatography. Prediction of Retention of Several Quinolones. Journal of Liquid Chromatography 1995, 18, 3445. <>
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