Infinite Dilution Binary Diffusion Coefficients of Several α-Amino Acids in Water over a Temperature Range from (293.2 to 333.2) K with the Taylor Dispersion Technique

Infinite dilution binary diffusion coefficients ( D 12 ) were determined for 10 α-amino acids, glycine, alanine, α-amino- n -butyric acid, norvaline, valine, norleucine, leucine, isoleucine, alloisoleucine, and tert -leucine in water over a temperature range from (293.2 to 333.2) K with the Taylor dispersion technique. At 298.2 K, the literature data for the two α-amino acids alloisoleucine and tert -leucine are not available, whereas the determined D 12 values of the others are in good agreement with the data reported previously within the experimental errors of ± 2.0 %. The D 12 values for all α-amino acids studied were well-represented by two simple correlations, and the accuracies for the correlations were examined for each α-amino acid.