Voltammetric determination of nitrate in water samples at copper modified bismuth bulk electrode

Dawei Pan Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research(YIC), Chinese Academy of Sciences(CAS); Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, YICCAS, Yantai Shandong, 264003, P.R. ChinaCorrespondence[email protected]

Wenjing Lu Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research(YIC), Chinese Academy of Sciences(CAS); Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, YICCAS, Yantai Shandong, 264003, P.R. China; Graduate School of the Chinese Academy of Sciences, Beijing, 100039, P.R. China

Haiyun Zhang Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research(YIC), Chinese Academy of Sciences(CAS); Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, YICCAS, Yantai Shandong, 264003, P.R. China; Graduate School of the Chinese Academy of Sciences, Beijing, 100039, P.R. China

Li Zhang Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research(YIC), Chinese Academy of Sciences(CAS); Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, YICCAS, Yantai Shandong, 264003, P.R. China; Graduate School of the Chinese Academy of Sciences, Beijing, 100039, P.R. China

Jianmei Zhuang The Key Lab in Molecular and Nano-materials Probes of the Ministry of Education of China, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, P.R. China

Abstract

Voltammetric determination of nitrate () in 0.1 M 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 µM), wide linear range (13 µM to 3 mM), high sensitivity (31.8 µAmM⁻¹cm⁻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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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (21007087), the Chinese Academy of Sciences (KZCX2-YW-JS208), the Natural Science Foundation of Shandong Province (2008ZRA06004, BS2010HZ030), the Science and Technology Development Project of Yantai City (2009164), the Taishan Scholar Program of Shandong Province and the Youth Innovation Promotion Association of CAS.

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Voltammetric determination of nitrate in water samples at copper modified bismuth bulk electrode

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Voltammetric determination of nitrate in water samples at copper modified bismuth bulk electrode

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