ALTERNATIVE GRAPHICAL METHODS FOR THE SPECTROPHOTOMETRIC ANALYSIS OF MIXTURES

One method permits data to be taken at multiple wavelengths to generate linear plots, from which the concentrations can be determined; this method is applicable to mixtures of two or three components. The second method is a graphical technique for the solution of simultaneous equations. For 3-component mixtures, the graphical solution Is carried out on a triangular composition plot; for 4-component mixtures, a 3-dimensional construction is used. Results from these methods on many mixtures are compared with the conventional simultaneous equations method. © 1979, American Chemical Society. All rights reserved.