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Issue 1, 2012
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Monitoring of decolorization of a two dyes mixture using spectrophotometric data and multivariate curve resolution: modeling the removal process using an experimental design method

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Abstract

Developing a simple analytical method to determine azo dyes in environmental samples is important. Spectrophotometric techniques remain largely used in this field because of the easy interpretation and handling of the spectral data. But, this method suffers a main problem, spectral overlapping. In this paper, in spite of spectral overlapping, multivariate curve-alternating least squares was used to determine Acid Red 27 and Methyl Red dyes in a mixture of them. Resolution of binary mixtures of analytes with minimum sample pre-treatment and without analyte separation was successfully achieved by analyzing the UV-Vis spectral data. Also, central composite design was applied for modeling of the decolorization of a dye solution that contains two dyes using the Fenton reaction. The investigated factors (variables) were the initial concentration of Fe(II), the initial concentration of the two dyes and the initial H2O2 concentration.

Graphical abstract: Monitoring of decolorization of a two dyes mixture using spectrophotometric data and multivariate curve resolution: modeling the removal process using an experimental design method

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Publication details

The article was received on 24 Jul 2011, accepted on 07 Oct 2011 and first published on 24 Nov 2011


Article type: Paper
DOI: 10.1039/C1AY05448A
Anal. Methods, 2012,4, 153-161

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    Monitoring of decolorization of a two dyes mixture using spectrophotometric data and multivariate curve resolution: modeling the removal process using an experimental design method

    A. Naseri and H. Ayadi-Anzabi, Anal. Methods, 2012, 4, 153
    DOI: 10.1039/C1AY05448A

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