Volumetric properties of glycine, L-alanine, and l-valine in aqueous solutions of triammonium citrate at different temperatures

摘要

Densities of glycine, L-alanine, and l-valine in 0.2, 0.4, 0.6, and 0.8 mol kg~(-1) solutions of triammonium citrate have been measured at T = 288.15, 298.15, 308.15, and 315.15 K and atmospheric pressure. The density values were used to determine the apparent molar volume (V_B~(app)), the partial molar volume (V_B~0), standard partial molar volumes of transfer ( ΔV_B~0), and partial molar expansibility. The results have been discussed in terms of prevailing interactions in solutions of amino acids and triammonium citrate.