Potential shift correction in multivariate curve resolution of voltammetric data. General formulation and application to some experimental systems
Literature Information
Publication Date
2007-11-02
DOI
10.1039/B715667G
Impact Factor
4.616
Authors
Arístides Alberich, José Manuel Díaz-Cruz, Cristina Ariño, Miquel Esteban
View Original
Abstract
A new mathematical algorithm is proposed to correct the progressive potential shift of some voltammetric signals that decrease the linearity of the data. The corrected data matrix can be further analysed by Multivariate Curve Resolution by Alternating Least Squares (MCR-ALS) and the vector including the potential shift corrections can be fitted to specific equations such as that by DeFord–Hume. A detailed discussion is given on the different cases of potential shift correction, and, in some of them, mathematical simulation is made or experimental systems [Cd(II)–glutathione and Zn(II)–glycine] are analysed.
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