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Electrochemical detection of Se (IV) and (VI) was investigated at gold-modified boron-doped diamond electrodes. Cyclic voltammetry in acid condition showed that the onset of current flows of Se (IV) and Se (VI) occurred at almost similar potentials. Furthermore, the currents at the peak potential of ∼0.9 V (vs. Ag/AgCl) showed high linearity against concentrations of both Se (IV) and Se (VI) with...
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