Nanogold modified glassy carbon sensor for the quantification of phytoestrogenchlorogenic acid

Nanogold modified glassy carbon electrode has been fabricated for electrochemical sensing of chlorogenic acid (CGA). The electrochemical properties and morphology of the prepared nanocomposite were studied by elec- trochemical impedance (EIS) and scanning electron microscopy (SEM). The response of the voltammetric sensor was found to be linear with concentration of CGA in the range of 0.4 -3.6 mu g mL(-1) with detection limit of 0.0140 mu g mL(-1) . The proposed method was also applied for the estimation of CGA in real samples.