Simultaneous Determination of Nickel and Cobalt Using a Solid Bismuth Vibrating Electrode by Adsorptive Cathodic Stripping Voltammetry

作者: Georgina M. S. Alves , Júlia M. C. S. Magalhães , Helena M. V. M. Soares

DOI: 10.1002/ELAN.201200643

关键词: CobaltSquare waveCathodic stripping voltammetryElectrodeVoltammetryDetection limitChemistryBismuthAnalytical chemistryNickelInorganic chemistryElectrochemistry

摘要: A simple, fast, sensitive and greener voltammetric procedure for simultaneous analysis of nickel (Ni) cobalt (Co) by square wave adsorptive cathodic stripping voltammetry (SW-AdCSV) using a solid bismuth vibrating electrode is presented the first time. The enables to determine Ni together with Co, in ammonia buffer 0.1 M (pH 9.2) presence oxygen, involves an accumulation metal-dimethylglyoxime (Ni-DMG Co-DMG) complexes on surface. For detection limits, obtained 30 s time, were 0.6 1.0 µg L−1, respectively. method was free metals (Cd2+, Cr3+, Cr6+, Cu2+, Fe3+ Pb2+ up 50 µg L−1, Al3+ Mn2+ 500 µg L−1; Zn2+ 300 µg L−1) interferences concentrations mentioned brackets. proposed validated determination Co certified reference surface river waters good results.

参考文章(45)
Emily A Hutton, Božidar Ogorevc, Samo B Hočevar, Frances Weldon, Malcolm R Smyth, Joseph Wang, An introduction to bismuth film electrode for use in cathodic electrochemical detection Electrochemistry Communications. ,vol. 3, pp. 707- 711 ,(2001) , 10.1016/S1388-2481(01)00240-5
Ivan Švancara, Chad Prior, Samo B. Hočevar, Joseph Wang, A Decade with Bismuth‐Based Electrodes in Electroanalysis Electroanalysis. ,vol. 22, pp. 1405- 1420 ,(2010) , 10.1002/ELAN.200970017
Miriam Adamovski, Agnieszka Zając, Peter Gründler, Gerd-Uwe Flechsig, Self-assembled monolayers on bismuth electrodes Electrochemistry Communications. ,vol. 8, pp. 932- 936 ,(2006) , 10.1016/J.ELECOM.2006.03.031
Miriam Bučková, Peter Gründler, Gerd-Uwe Flechsig, Adsorptive Stripping Voltammetric Detection of Daunomycin at a Bismuth Bulk Electrode Electroanalysis. ,vol. 17, pp. 440- 444 ,(2005) , 10.1002/ELAN.200403178
Omar El Tall, Daniel Beh, Nicole Jaffrezic-Renault, Olivier Vittori, Electroanalysis of some nitro-compounds using bulk bismuth electrode International Journal of Environmental Analytical Chemistry. ,vol. 90, pp. 40- 48 ,(2010) , 10.1080/03067310902871265