Abstract
Protonation equilibria of l-glutamine and speciation of its complexes with Co(II), Ni(II) and Cu(II) have been studied pH-metrically in 0–2.5 % v/v triton X-100 solution maintaining an ionic strength of 0.16 mol l−1 at 303 K. The protonation constants and binary stability constants have been calculated with the computer program MINIQUAD75. Best fit chemical models have been selected based on standard deviation in stability constants and residual analysis using crystallographic R-factor and sum of squares of residuals in all mass-balance equations. The trend in the variation of stability constants of the complexes with mole fraction of the medium is attributed to the compartmentalization of complexation equilibria. Distribution of species and effect of influential parameters on chemical speciation have also been presented.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Proceedings of the National Academy of Sciences, India Section A: Physical Sciences
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
