DETERMINATION OF PARACETAMOL AND SODIUM SALICYLATE USING TLC, PHOTOMETRY AND DIGITAL COLORIMETRY
The methods for the quantitative determination of paracetamol and sodium salicylate in the aqueous solution combining a TLC and digital colorimetry are offered. Characteristics of this method are compared with the capabilities of photometric analysis. The implementation of two or three color-reactions is suggested to improve the reliability of colorimetric determination. The colorimetric characteristics (RGB color coordinates) of the electronic image of the test sample are used as the analytical signal.