1 results match your criteria: "University of Castilla-La Mancha. 13071 Ciudad Real[Affiliation]"
Simultaneous spectrophotometric determination of tartrazine, patent blue V, and indigo carmine in commercial products by partial least squares and principal component regression methods.
Talanta
April 1999
Department of Analytical Chemistry and Food Technology, University of Castilla-La Mancha. 13071 Ciudad Real, Spain.
Article Synopsis
- Two multivariate calibration methods, partial least squares (PLS-1) and principal component regression (PCR), were effectively used to determine the concentrations of three dyes in mixtures through ultraviolet-visible absorption spectrophotometry.
- The calibration models underwent various evaluation methods, including internal, cross-validation, and external validation, showing high recovery rates (93.5-103.1%) for synthetic mixtures of the dyes and commercial products.
- Studies on repeatability and reproducibility demonstrated no significant differences among dye standards at a 95% confidence level, affirming the reliability of the calibration models.