TITLE

Competitive binding of cadmium by plant thiols: an electrochemical study assisted by multivariate curve resolution

AUTHOR(S)
Gusmão, Rui; Ariño, Cristina; Díaz-Cruz, José Manuel; Esteban, Miquel
PUB. DATE
June 2009
SOURCE
Analytical & Bioanalytical Chemistry;Jun2009, Vol. 394 Issue 4, p1137
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Multivariate curve resolution with alternating least squares (MCR-ALS) has been applied to voltammetric data obtained from analysis of the competitive binding of cysteine (Cys) and cysteine–glycine (Cys-Gly) by Cd(II) as a first approach towards mixtures of phytochelatins and related compounds in natural media. From different starting points, the possibilities of formation of mixed complexes and/or displacements between ligands are investigated. Analysis of the resulting unitary voltammograms and concentration profiles of the resolved components by MCR-ALS suggests that the strongest ligand (Cys-Gly) is able to displace the weakest (Cys) from its metal complexes, whereas this does not happen in the opposite direction. On the other hand, no evidence of Cd mixed-ligand complexes was found. [Figure not available: see fulltext.]
ACCESSION #
39776232

 

Related Articles

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics