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Simultaneous determination of nickel(II) and cobalt(II) by spectrophotometry

J. Trúchly and T. Šramko

Department of Inorganic Chemistry, Slovak Technical University, Bratislava

 

Abstract: A spectrophotometry method of simultaneous determination of nickel and cobalt in aqueous solution has been developed. The method is based on colouring the respective cations by ammoniacal solution of sodium hydrosulfite. It was applied mainly to the weight ratio of NiII CoII = 20 : 1 usual in industrial processing of nickel ores. This method allows a rapid, simple and sufficiently accurate determination of Ni11 and CoII simultaneously, in the same solution, simply by changing the filters of the usual spectrophotometric apparatus. Most suitable for this purpose has prooved a photo-cell spectrophotometer, with at least four colour filters. The determination itself takes about one hour. The course of analysis being well arranged, this method allows to determine the  NiII and CoII  contents of 25 — 30 samples in about 8 hours.

Full paper in Portable Document Format: 1910a767.pdf (in Slovak)

 

Chemical Papers 19 (10) 767–773 (1965)

Thursday, June 20, 2024

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