Chemometric calibration based on the wavelet transform for the quantitative resolution of two-colorant mixtures
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Date
2005
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Editura Academiei Romane
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Abstract
In this study we proposed a wavelet transform (WT) followed by two chemometric techniques for the quantitative determination of sunset yellow (SUN) and tartrazine (TAR) in their market samples. Absorbances of the concentration set formed by TAR and SUN mixtures were measured between 335-575 nm at 480 points with 0.5 nm intervals and their absorbance values as absorbance data vectors were transferred into the wavelets domain. A continuous wavelet transform (CWT) was applied, to the absorbance data. The obtained CWT-coefficients (x-block) and concentration set (y-block) were used for the construction of the principal component regression (VCR) and partial least squares (PLS) calibrations. Good results were reported for the application of the combining wavelets and chemometric tools in the determination of colorants in samples.
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Partial Least-Squares, Simultaneous Spectrophotometric Determination, Sunset Yellow, Allura Red, Derivative Spectrophotometry, Continuous Daubechies, Pyridoxine Hcl, Thiamine Hcl, Food Colors, Ponceau 4r
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Dinç,E.; Baleanu, D.; Üstündağ, O.; Taş, K., "Chemometric calibration based on the wavelet transform for the quantitative resolution of two-colorant mixtures", Revue Roumaine De Chime, Vol.50, No.4, pp.283-290, (2005).
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Source
Revue Roumaine De Chime
Volume
50
Issue
4
Start Page
283
End Page
290