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.
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Horst et al. (2020) studied this question.
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