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Reduction behavior of fenoxaprop-p-ethyl and its voltammetric determination

The reduction behavior of fenoxaprop-p-ethyl (FNX) was studied on a hanging mercury drop electrode. FNX showed 2 reduction peaks at about –0.7 V and at about –0.9 V versus Ag/AgCl/3.0 M KCl in Britton–Robinson buffer at pH 4.8. Both reductions were irreversible and adsorption was effective. The reduction peaks were assigned to the reduction of C=N to CH–NH and the reduction of C=O to CH–OH. Square-wave voltammetry has been proposed and validated for quantification of FNX in different samples. |