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Electrochemical detection of ascorbic acid using a polymer modified carbon paste electrode

Author(s): Abdelmajid Sadiki Lamari, Anass El Fattouh, Salah Eddine El Qouatli, Rachida Najih, Abdelilah Chtaini

Ascorbic acid (Vitamin C) is a water soluble organic compound that participates in many biological processes. This paper reports the synthesis of polymer modified carbon paste electrode and its application for the electrochemical detection of ascorbic acid (AA). The cyclic voltammetry results obtained corrobate with square wave voltammetry. The influence of variables such the concentration of ascorbic acid adsorbed onto polymer, and the pH of solution were tested. The capacity of prepared electrode (P-CPE) for selective detection ofAAwas confirmed in a sufficient amount of ascorbic acid. The observed linear range for the determination ofAAconcentrationwas from0.2mMto 9mM. The detection limitwas estimated to be 5. 48 M.

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