Cyclic Voltammetric Investigation of Caffeine at Anthraquinone Modified Carbon Paste Electrode

Abstract

anodic peak current and CAF concentration in the range 2.0 × 10 −6 − 8.0 × 10 – 4 M, with the correlation coefficient of 0.998 and a detection limit of 1.43 × 10 −7 M. The application of the modified electrode for the determination of CAF in pharmaceutical formulation showed good recovery with reproducible results.