A New Approach for the Determination of Benzocaine and Procaine in Pharmaceuticals by Single-Sweep Polarography

Figure 2

Polarogramms in a PMS solution without BC or PC (1) and the solutions of BC (2) and PC (3) after oxidation at pH 9 and heating to 60°C. = 10⁻³ mol·L⁻¹, = = 5·10⁻⁵ mol·L⁻¹. Phosphate buffer was used as supporting electrolyte, =0.2 mol·L⁻¹ and рH=4.