Please use this identifier to cite or link to this item: https://doi.org/10.1016/0003-2670(95)00535-8
Title: Determination of cobalt by catalytic-adsorptive differential pulse voltammetry
Authors: Gao, Z. 
Siow, K.S. 
Yeo, L.
Keywords: Catalytic methods
Cobalt
Voltammetry
Issue Date: 29-Feb-1996
Citation: Gao, Z., Siow, K.S., Yeo, L. (1996-02-29). Determination of cobalt by catalytic-adsorptive differential pulse voltammetry. Analytica Chimica Acta 320 (2-3) : 229-234. ScholarBank@NUS Repository. https://doi.org/10.1016/0003-2670(95)00535-8
Abstract: A novel method is described for the determination of cobalt(II) by differential pulse voltammetry, based on accumulation of a cobalt complex, [CoSCNNO]+, on a hanging mercury drop electrode, followed by measurement of the catalytic current of the adsorbed complex. The effects of various experimental parameters on the catalytic current were investigated. The current was found to be linear for 0.3 nM to 100 nM Co, with a detection limit of 70 pM (4.1 ng l-1) and a relative standard deviation of 1.6% for 50 nM Co (n = 25). The developed method showed considerable selectivity against nickel and zinc. A possible mechanism of the reduction process is proposed.
Source Title: Analytica Chimica Acta
URI: http://scholarbank.nus.edu.sg/handle/10635/93543
ISSN: 00032670
DOI: 10.1016/0003-2670(95)00535-8
Appears in Collections:Staff Publications

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