Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 52,
  • Issue 2,
  • pp. 226-233
  • (1998)

Infrared Titration of Aqueous Glycine

Not Accessible

Your library or personal account may give you access

Abstract

The infrared (IR) spectra of glycine in aqueous solutions were obtained in the pH range 0.2 to 14 in order to determine the ionic distribution of the molecule as a function of pH by factor analysis (FA). After subtraction of the water bands, FA was used to separate the spectra of each ionic species and determine their real abundance. The p K values were retrieved from the volumetric titration a as a function of pH and were used to obtain the theoretical abundance of each ionic species as a function of pH. These distribution curves were compared with the distribution curves obtained from IR. The agreement between the two curves was good. The following species were observed for glycine in water: the cation (pH 0 to 5); the zwitterion (pH 0 to 12.5); and the anion (pH 7 to 14).

PDF Article
More Like This
Infrared Spectroscopy of Biologic Materials in Aqueous Solutions

E. R. Blout and H. Lenormant
J. Opt. Soc. Am. 43(11) 1093-1095 (1953)

Optical Constants in the Infrared for Aqueous Solutions of NaCl†

Marvin R. Querry, Richard C. Waring, Wayne E. Holland, G. Michael Hale, and William Nijm
J. Opt. Soc. Am. 62(7) 849-855 (1972)

Infrared optical constants of aqueous solutions of sodium sulfate

R. W. Adams, K. A. Fuller, and H. D. Downing
J. Opt. Soc. Am. 72(7) 893-894 (1982)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved