A New Electrochemical Method to Detect Sunset Yellow, Tartrazine and Thiomersal in a Pharmaceutical Dose Using a Carbon Paste Electrode Decorated with Molybdenum Oxide

Johisner Penagos-Llanos, Olimpo García-Beltrán, Edgar Nagles, John J. Hurtado

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

Resumen

This report allowed the detection of three substances using a carbon paste decorated with MoO2 (MoO/CPE). Tartrazine (TZ), sunset yellow (SY) and thiomersal (TMS) were analyzed for adsorptive voltammetry. The electrode was characterized by scanning electron microscopy, energy dispersive spectroscopy and cyclic voltammetry. TZ, SY and TMS were observed at 1.07, 0.80 and 0.95 V respectively. The detection limits (3*σ/m) for TZ, SY and TMS were 0.04, 0.06 and 0.10 μmol/L, respectively. The new analytical method was applied using pharmaceutical samples.

Idioma originalInglés
Páginas (desde-hasta)2174-2182
Número de páginas9
PublicaciónElectroanalysis
Volumen32
N.º10
DOI
EstadoPublicada - 1 oct 2020

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