Use of the mathematical apparatus of two-component spectrophotometry for the simultaneous catalymetric determination of two anions

Previously studied reactions of aluminum(III) with Xylenol Orange and of cobalt(III) with nitroso-R salt in weakly acidic solutions were proposed for the simultaneous catalymetric determination of carbonate and borate ions and carbonate and phosphate ions, respectively. It was demonstrated that the mathematical apparatus of two-component spectrophotometry is suitable for processing the results of analysis.Translated from Zhurnal Analiticheskoi Khimii, Vol. 60, No. 1, 2005, pp. 7–10.Original Russian Text Copyright © 2005 by Mikhailova, Belikov, Blank.