| Abstract: | A simple and rapid method for p-chloronitrobenzene detection has been described based on electrochemical pretreatment of glassy carbon electrode (GCE) which was treated by anodic oxidation at 2.2 V or 120 s, following cathodization at ?1.5 V for 60 s. The structure and morphology of the GCE surface was characterized by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), and Fourier transform infrared spectroscopy (FTIR). The electrochemical oxidization significantly increased the content of oxygen-containing functional groups in the electrode surface. The sensitivity for p-chloronitrobenzene detection was improved remarkably, and the detection limit was 1.0 × 10?3 mg L?1 (3S/N). The RSD of the voltammetric measurements was less than 6.8 % for six replicate. An electrochemical detection of p-chloronitrobenzene in spiked water sample was succeeded with satisfactory results. |
