Quantification of Textile Dyes in Industrial Effluent Using UV-Vis Spectrophotometry Combined with Principal Components Regression

UV-Vis spectrophotometry and multivariate calibration model, Principal Components Regression (PCR), were used for individual and simultaneous quantification of ternary mixtures of reactive dyes (Yellow Procion HE4R, Navy Blue Procion HER, and Blue Procion HEGN) in a sample of industrial effluent and effluents obtained in the laboratory. A Centroid-Simplex-type experimental design was used. The percentages of the dyes Yellow Procion HE4R, Navy Blue Procion HER, and Blue Procion HEGN not fixed to the fiber in the industrial dyeing process and laboratory scale were 47.40%, 10.99%, 24.72% and 4.20%, 46.06%, 32.04%, respectively.