Amines are of industrial interest as important precursors in the synthesis of dyes, pharmaceuticals, stabilizers, emulsifiers and corrosion inhibitors. Due to their commercial applications and widespread uses as intermediates in the chemical and pharmaceutical industries, they are widely distributed in the nature. Aromatic amines are compounds of considerable industrial and commercial importance and some of them have been shown to have potent toxicological properties. They are important from environmental point of view, particularly with regard to their carcinogenic activity. Therefore, there is a growing need in the determination of these compunds in various types of samples. In this study, the application of multivariate curve resolution alternating least squares (MCR-ALS) has been used for the quantitative determination of mixtures of aromatic amines simultaneously occurring in water samples. The UV-Vis spectra resulted from spectrophotometric acid-base titration have been collected and disposed in a column-wise augmented data matrix. Quantitative determination of each amine in the mixtures has been performed using only a synthetic solution of standard containing the amine of interest. The method has been applied to the determination of these compounds in tap water, well water and river water with satisfactory results. Good recoveries were obtained in the range of 98–107%.
