Voltammetric determination of nitrate () in 0.1M Na2SO4 solution (pH 2.0) at copper modified bismuth bulk (BiB/Cu) electrode was presented in this article. Owing to the unique properties of bismuth bulk electrode, the proposed BiB/Cu electrode can be used for determination of without any deoxygenating pretreatment and shows low detection limit (6 mu M), wide linear range (13 mu M to 3mM), high sensitivity (31.8 mu AmM(-1)cm(-2)) and good anti-interference. The practical application of the proposed BiB/Cu electrode has been carried out for determination of in real environmental water samples.
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