Electrochemical behavior of naringenin and its sensitive determination based on a single-walled carbon nanotube modified electrode

Abstract

A stable voltammetric sensor (SWCNTs/GCE), single-walled carbon nanotubes (SWCNTs) cast on a glassy carbon electrode (GCE), was employed in the initial electrochemical determination of naringenin. The complex electrochemical behavior of naringenin on this sensor was investigated in detail, and the dynamic and thermodynamic parameters were calculated. The new electroanalytical method for naringenin was proposed with a low detection limit of 2.0 × 10⁻⁸ mol L⁻¹ (S/N = 3) and wide linear ranges from 8 × 10⁻⁸ to 5 × 10⁻⁶ mol L⁻¹ and 5 × 10⁻⁶ to 1.2 × 10⁻⁵ mol L⁻¹, respectively. More importantly, this sensor exhibited good reproducibility and long-term stability. Then this sensor was successfully applied for the determination of naringenin in Fructus Aurantii Immaturus with satisfactory results.