Poly(4-amino-3-hydroxynaphthalene-1-sulfonic acid) modified glassy carbon electrode for square wave voltammetric determination of amoxicillin in four tablet brands

Table 1 Summary of standard addition regression equation, claimed AMX in the tablet sample, detected AMX content, and percent detected as compared to the theoretical value for each analysed tablet brand

Tablet brand	Linear regression equation; determination coefficient (R²)	Labeled AMX (mg/tablet)	claimed AMX in tablet sample (µmol L⁻¹)	Detected AMX in		% detected
Tablet brand	Linear regression equation; determination coefficient (R²)	Labeled AMX (mg/tablet)	claimed AMX in tablet sample (µmol L⁻¹)	Sample^a (µmol L⁻¹)	Tablet (mg/tablet)	% detected
APF	Ipa/µA = − 2.60 − 0.14C/µM; R² = 0.99936	500	19.10	19.25 ± 5.82	503.90	100.78
EPHARM	Ipa/µA = − 2.50 − 0.13C/µM; R² = 0.99929	500	19.50	19.08 ± 5.66	489.20	97.84
DENK	Ipa/µA = − 2.20 − 0.13C/µM; R² = 0.99901	500	17.02	16.80 ± 6.07	493.50	98.70
GLAXO	Ipa/µA = − 2.50 − 0.13C/µM; R² = 0.9995	500	18.90	18.70 ± 6.58	494.70	98.94

ISSN: 2661-801X