The electrochemical behavior of ortho-phenylphenol(OPP) at a disposable electrode(an improved wax-impregnated graphite electrode) in the presence of sodium dodecyl sulfate(SDS) was studied for the first time.The results demonstrated that the electrocatalytic oxidation process of OPP was accompanied with two-charge-two-proton transference.The electronic transmission coefficient(α) and diffusion coefficient(DR) for OPP were calculated to be 0.8126 and 3.61 × 10-2 cm2/s,respectively.The electrochemical signal was apparently improved by SDS at the disposable electrode and the oxidative peaks current was proportional to the concentration of OPP over the range from 1.0 × 10-9 to 4.0 × 10-6 mol/L with the detection limit of 8.7 × 10-10 mol/L.This novel and highly sensitive method can be successfully applied to detect OPP in the orange rind sample.
LI HongBoLI JingMENG DongMeiPENG JinYunQIAO QiuJuYANG ZhanJunXU QinHU XiaoYa
