Sandra Perla Méndez Cortés
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Carlos Andrés Galán Vidal
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José Antonio Rodríguez Ávila
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Giaan Arturo Álvarez Romero
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María Elena Páez Hernández
In the present study an electrochemical assay for the detection of arsenic (III) by means of square wave anodic stripping voltammetry with co-deposition of silver at screen printed and glassy carbon electrodes is presented. This methodology shows a good behavior in presence of dissolved oxygen with appropriate detection limits to monitoring the water quality according to the guidelines values. The evaluation of most important interfering ions (Cl<sup>-</sup>, Hg<sup>2+</sup>, Pb2<sup>+ </sup>and Cu<sup>2+</sup>) is also described. The proposed analytical strategy demonstrated to be suitable for decentralized arsenic analysis and can be easily integrated to portable instrumentation commercially available.