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Simultaneous Detection of Paracetamol, Ascorbic Acid, and Caffeine Using a Bismuth–Silver Nanosensor
Author(s) -
Horst Charlton,
Silwana Bongiwe,
Gil Eric,
Iwuoha Emmanuel,
Somerset Ver
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.202060389
Subject(s) - ascorbic acid , bimetallic strip , bismuth , chemistry , caffeine , nuclear chemistry , selectivity , detection limit , electrochemistry , electrochemical gas sensor , inorganic chemistry , electrode , chromatography , metal , organic chemistry , catalysis , food science , medicine , endocrinology
Abstract The bimetallic nanoparticles of bismuth‐silver were used to modify a disk GCE for the simultaneous electrochemical analysis of caffeine (CAF), ascorbic acid (AA), and paracetamol (PAR). The constructed Bi‐AgNPs/GCE illustrated strong electrocatalytic activity towards the oxidation of CAF, PAR, and AA. Under the optimum conditions, the sensor provided linearity for PAR, AA, CAF between 2 to 20 μΜ, 10 to 70 μM, and 2 to 40 μM ( n =3), respectively. The detection limits for CAF, PAR, and AA was 2.36 μM, 0.155 μM, and 0.697 μM, respectively. The GCE/Bi‐AgNPs sensor presented good sensitivity and selectivity for the simultaneous electrochemical analysis of CAF, PAR, and AA.