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Journal of Chemistry
Volume 2013 (2013), Article ID 481341, 5 pages
Research Article

Effect of Hydroxylamine Sulfate on Volumetric Behavior of Glycine, L-Alanine, and L-Arginine in Aqueous Solution

College of Food Science and Biotechnology Engineering, Zhejiang Gongshang University, Hangzhou 310035, China

Received 29 April 2013; Accepted 21 October 2013

Academic Editor: Patricia Valentao

Copyright © 2013 Jie Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The apparent molar volumes of glycine, L-alanine, and L-arginine in aqueous hydroxylamine sulfate solutions have been determined at  K and atmospheric pressure. The standard partial molar volumes, , corresponding partial molar volumes of transfer, , and hydration numbers, , have been calculated for these α-amino acids from the experimental data. The values are positive for glycine, L-alanine, and L-arginine and are all increased with the increase in the concentration of hydroxylamine ions. These parameters obtained from the volumetric data are interpreted in terms of various mixing effects between amino acids and hydroxylamine sulfate in aqueous solutions.