TY - JOUR
T1 - Development of a Novel Electrochemical Sensor Based on a Carbon Paste Electrode Decorated with Nd2O3 for the Simultaneous Detection of Tartrazine and Sunset Yellow
AU - Marquez-Mariño, Karen
AU - Penagos-Llanos, Johisner
AU - García-Beltrán, Olimpo
AU - Nagles, Edgar
AU - Hurtado, John J.
N1 - Publisher Copyright:
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/11
Y1 - 2018/11
N2 - The simultaneous detection of tartrazine (TZ) and sunset yellow (SY) using a carbon paste-decorated neodymium (III) oxide electrode (NdOx/CPE) is reported for the first time in this work. The surface properties of the NdOx/CPE were studied by cyclic voltammetry, electrochemical impedance spectroscopy and scanning electron microscopy. The anodic peak currents for TZ and SY increased by more than 60 %, and the anodic peak potentials for TZ and SY were observed at potential values less positive than those of the carbon paste without NdOX. Under the optimal parameters (pH 3.0; accumulation time tACC 30 s; and accumulation potential EACC 0.10 V), the detection limits for TZ and SY observation were 0.02 μmol L−1 (10.6 μg L−1) and 0.09 μmol L−1 (40.6 μg L−1), respectively. The new sensor was sensitive, stable, easily manufactured, and very convenient for the detection of TZ and SY in food samples and pharmaceutical materials and provided consistent results.
AB - The simultaneous detection of tartrazine (TZ) and sunset yellow (SY) using a carbon paste-decorated neodymium (III) oxide electrode (NdOx/CPE) is reported for the first time in this work. The surface properties of the NdOx/CPE were studied by cyclic voltammetry, electrochemical impedance spectroscopy and scanning electron microscopy. The anodic peak currents for TZ and SY increased by more than 60 %, and the anodic peak potentials for TZ and SY were observed at potential values less positive than those of the carbon paste without NdOX. Under the optimal parameters (pH 3.0; accumulation time tACC 30 s; and accumulation potential EACC 0.10 V), the detection limits for TZ and SY observation were 0.02 μmol L−1 (10.6 μg L−1) and 0.09 μmol L−1 (40.6 μg L−1), respectively. The new sensor was sensitive, stable, easily manufactured, and very convenient for the detection of TZ and SY in food samples and pharmaceutical materials and provided consistent results.
KW - Carbon paste
KW - Modified electrodes
KW - Neodymium (III) Oxide
KW - Sunset yellow
KW - Tartrazine
UR - http://www.scopus.com/inward/record.url?scp=85053679118&partnerID=8YFLogxK
U2 - 10.1002/elan.201800550
DO - 10.1002/elan.201800550
M3 - Artículo
AN - SCOPUS:85053679118
SN - 1040-0397
VL - 30
SP - 2760
EP - 2767
JO - Electroanalysis
JF - Electroanalysis
IS - 11
ER -