Journal of Spectroscopy / 2013 / Article / Tab 3

Research Article

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

Table 3

Determination of paracetamol, aspirin, and caffeine in Excedrin tablets by the proposed method.

Sample*Added (mg)Found (mg)Recovery (%)

Brand I325.7866.50331.51100.24102.30102.00

Brand II329.4866.95328.93101.37103.00101.20

RSD (%)2.444.314.10

1 and 2 are Excedrin tablets containing paracetamol (325 mg), aspirin (325 mg), and caffeine (65 mg) in each tablet from Bristol-Meys Squibb and Novartis Consumer Health companies for brands 1 and 2, respectively.

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