Free energies of amino acid adsorption on silica in neutral aqueous medium as estimated from high-performance liquid-chromatographic retention data
Por:
Basiuk V.A., Gromovoy T.Yu.
Publicada:
1 ene 1994
Resumen:
Equilibrium constants (K) and free energies (-?G) of amino acid adsorption on silica in a neutral aqueous medium were calculated from the retention values measured by means of high-performance liquid chromatography on a silica gel column. For most amino acids (with the exception of proline) -?G values were negative and K < 1, thus showing very low adsorption. Influence of the structure of the ?-substituent on adsorbability is analyzed. A linear dependence of -?G on the number of aliphatic carbon atoms was shown for the series: glycine-alanine-valine-leucine-isoleucine. © 1994 Springer-Verlag.
Filiaciones:
Basiuk V.A.:
Institute of Surface Chemistry, Academy of Sciences of the Ukraine, Kiev, Ukraine
Instituto de Ciencias Nucleares, UNAM, Circuito Exterior C.U., A.Postal 70-543, 04510, D.F., Mexico
Gromovoy T.Yu.:
Institute of Surface Chemistry, Academy of Sciences of the Ukraine, Kiev, Ukraine
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