THE RESOLUTION OF DYE BINARY-MIXTURES BY BIVARIATE CALIBRATION USING SPECTROPHOTOMETRIC DATA

Citation
Pl. Lopezdealba et al., THE RESOLUTION OF DYE BINARY-MIXTURES BY BIVARIATE CALIBRATION USING SPECTROPHOTOMETRIC DATA, Analytical letters, 29(3), 1996, pp. 487-503
Citations number
15
Categorie Soggetti
Chemistry Analytical
Journal title
ISSN journal
00032719
Volume
29
Issue
3
Year of publication
1996
Pages
487 - 503
Database
ISI
SICI code
0003-2719(1996)29:3<487:TRODBB>2.0.ZU;2-2
Abstract
A new, simple spectrophotometric method for resolution of dye binary m ixtures is proposed in this work. A simple mathematical algorithm was designed, in which the data are used from four linear regression calib ration equations: two calibrations for each component at two selected wavelengths. The method of Kaiser was applied for the selection of the optimum two-wavelength sets for all mixtures under study. The recover y experiments were carried out in ten mixtures of the following dyes: Tartrazine, Amaranth, Erythrosin B, Sunset Yellow and Allura Red. The obtained results were compared with the results of a commonly used der ivative spectrophotometric procedure (zero-crossing technique). The st atistical evaluation of the method bias was performed and it was concl uded that the proposed methodology may be competitive with the derivat ive procedure for the resolution of such dye binary mixtures.