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Determination of copper and nickel in iron and gallium by activation analysis

J. Borák, M. Křivánek, F. Kukula, and V. Vinš

Lachema, Research Institute of Pure Chemicals, Brno

 

Abstract: A simple activation analysis method for determination of nickel and copper in very pure iron and gallium was devised. The irradiated matrix was trapped at ion exchangers or it was separated by extraction with ether. Nickel and copper were first separated on Dovex 1 by elution by 8 N and 3.5 N hydrochloric acid. Nickel was then purified from the other elements, especially from the manganese, by precipitation with dimethylglyoxime, by extraction of the nickel(II) dimethylglyoxime into chloroform and by repeated precipitation with dimethylglyoxime. Copper was determined substoichiometrically by extraction by sodium diethyldithiocarbamide in alkali medium in the presence of EDTA and of citric acid. The preparations prepared by this procedure are radiochemically pure. Under the given conditions of experiment, the determination sensitivity was 5.10-2 μg nickel and 5 10-3 μg copper.

Full paper in Portable Document Format: 229a701.pdf (in Slovak)

 

Chemical Papers 22 (9) 701–705 (1968)

Friday, July 10, 2020

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