Premium
A New Electrochemical Method to Detect Sunset Yellow, Tartrazine and Thiomersal in a Pharmaceutical Dose Using a Carbon Paste Electrode Decorated with Molybdenum Oxide
Author(s) -
PenagosLlanos Johisner,
GarcíaBeltrán Olimpo,
Nagles Edgar,
Hurtado John J.
Publication year - 2020
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.202060008
Subject(s) - tartrazine , cyclic voltammetry , voltammetry , chemistry , detection limit , electrode , nuclear chemistry , carbon paste electrode , electrochemistry , materials science , chromatography
This report allowed the detection of three substances using a carbon paste decorated with MoO 2 (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.