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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

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

Tablet brand Linear regression equation; determination coefficient (R2) Labeled AMX (mg/tablet) claimed AMX in tablet sample (µmol L−1) Detected AMX in % detected
Samplea (µmol L−1) Tablet (mg/tablet)
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
  1. aMean ± %RSD for n = 3