Table 1. Electroanalytical characteristics of pharmaceuticals .

Drug

Type of electrode

Oxidation potential, V

Concentration range

Limit of detection

Acetaminophen (paracetamol)

SPE/CNT*

0.35 ± 0.02

100 nM – 100 µM

40 nM

Diclofenac

SPE/CNT*

0.53 ± 0.02

0.1 – 50 µM

35 nM

Ibuprofen

SPE/CNT*

0.97 ± 0.03

0.5 – 10 mM

0.3 mM

Erythromycin

GCE/AB **[33]

0.77 ± 0.03

0.2 – 10 µM

0.08 µM

Omeprazole

SPE/CNT*

0.70 ± 0.03

50 µM – 1 mM

17 µM

Note. *SPE/CNT screen-printed electrode/carbon nanotubes
**GCE/AB - glassy carbon electrode/acetylene black