Voltammetric Determination of Chloride Ion in Automotive Fuel Ethanol

Cathodic stripping voltammetry with a hanging mercury drop electrode was used in this study to determine chloride ions in automotive fuel ethanol. Choosing the correct stripping voltammetric technique, the correct choice of deposition potential and time provided well defined voltammetric waves with good repeatability and relatively small errors, with a determination limit of 0.13 mg L^?1, for only 10 s of deposition time, with better sensitivity and repeatability than the normalized method, as well as consumed less volume of the sample, being suitable for routine analysis.