Square Wave Anodic Stripping Voltammetry Determination of Arsenic (III) onto Carbon Electrodes by Means of Co-deposition with Silver

• Published in: Journal of the Mexican Chemical Society Vol. 62; no. 2; pp. 314 - 322
• Main Authors: Méndez Cortés, Sandra Perla, Galán Vidal, Carlos Andrés, Rodríguez Ávila, José Antonio, Álvarez Romero, Giaan Arturo, Páez Hernández, María Elena
• Format: Journal Article
• Language: English; Portuguese
• Published: Sociedad Química de México A.C 01.01.2018
• Subjects: Chemistry, Multidisciplinary; square wave anodic stripping voltammetry; arsénico; electrodos serigráficos de carbón; glassy carbon electrode; co-deposición de plata; electrodo de carbón vítreo; silver co-deposition; voltamperometría de redisolución anódica de onda cuadrada; arsenic; carbon screen printed electrode
• ISSN: 1870-249X; 2594-0317
• DOI: 10.29356/jmcs.v62i2.430

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-, Hg2+, Pb2+ and Cu2+) 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.