Journal of Spectroscopy / 2013 / Article / Fig 7

Research Article

The Spectrophotometric Multicomponent Analysis of a Ternary Mixture of Paracetamol, Aspirin, and Caffeine by the Double Divisor-Ratio Spectra Derivative Method

Figure 7

The coincident spectra of the first derivative of the ratio spectra of (a1) 20 μmol L−1 pure ASP and (a2) ternary mixture of 20 μmol L−1 ASP, 50 μmol L−1 CAF, 20 μmol L−1 PAR, and 2.0 μmol L−1 CAF + 2.0 μmol L−1 PAR as a double divisor; (b1) 50 μmol L−1 pure CAF and (b2) ternary mixture of 20 μmol L−1 ASP, 50 μmol L−1 CAF, 20 μmol L−1 PAR, and 2.0 μmol L−1 ASP + 2.0 μmol L−1 PAR as a double divisor; and (c1) 20 μmol L−1 pure PAR and (c2) ternary mixture of 20 μmol L−1 ASP, 50 μmol L−1 CAF, 20 μmol L−1 PAR, and 2.0 μmol L−1 ASP + 2.0 μmol L−1 CAF as a double divisor.
405210.fig.007

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