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In this study, pencil graphite electrodes were modified by electropolymerization of p-phenylenediamine polymer imprinted with diuron to develop a sensor for diuron detection. Polymer growth and template leach conditions were investigated for determining optimal settings in developing the sensor. Under optimal working conditions, the differential pulse voltammetric current response of diuron oxidation was linear in the range of 10–500 μM (R2: 0.9875) with a detection limit of 43.43 μM (S/N: 10). The molecularly imprinted polymer modified electrode showed selectivity and sensitivity for diuron compared to its structural analogues. The developed sensor was applied to the detection of diuron in water samples.

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