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Electrochemical oxidation of Paracetamol (PAR), Acetylsalicylic acid (ASA) and Caffeine (CAF) was investigated employing square wave stripping voltammetry (SWSV) using screen–printed carbon electrodes (SPCE). Determinations were performed in 0.1 mol L−1 BR buffer (pH 2.0) without accumulation step. SWV were obtained by scanning the potential from 0.00 to 1.40 V employing a scan increment of 4 mV,...
This work presents a simple, fast and low‐cost method for simultaneous determination of acetylsalicylic acid (ASA), without alkaline hydrolysis and caffeine (CF) in pharmaceutical formulations using a boron‐doped diamond as the working electrode through differential pulse voltammetry. A good repeatability was reached for 20 measurements, with a low relative standard deviation of less than 1.0 %. The...
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