Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 42: Issue 2
Selective solvent extraction of chromium(VI) using 2-hexylpyridine
Separation from uranium, thorium, fission products and first transition series elements
Authors:
M. Iqbal Pakistan Institute of Nuclear Science and Technology Nuclear Chemistry Division P. O. Nilore Rawalpindi (Pakistan)

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M. Ejaz Pakistan Institute of Nuclear Science and Technology Nuclear Chemistry Division P. O. Nilore Rawalpindi (Pakistan)

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Pages:
313–321
Online Publication Date:
09 Jan 2007
Publication Date:
01 Sep 1978
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02519407
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Abstract  

The extraction behaviour of trace and macroamounts of chromium(VI) from different mineral acid solutions by 2-hexylpyridine in chloroform has been investigated. In the chloride system, the extracted species is apparently (HPyH+)2 (Cr2O7)2− or HPy+(HCrO 4− ) for macro and trace amounts of chromium(VI), respectively. Among the common anions chloride and sulphate have little effect on extraction up to 1M concentration, while in the case of nitrate there is a continuous decrease in the extraction with the increase of salt concentration in the aqueous phase. The effect of ascorbate, acetate, citrate, oxalate, thiosulphate, thiocyanate ions on the extraction from 1M HCl was also examined. Separation factors of several elements relative to chromium(VI) have been described and the separation of chromium(IV) from a large number of elements has been achieved.

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Cover Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry
Print ISSN:
0236-5731
Online ISSN:
1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation		 1968
Volumes
per Year		 1
Issues
per Year		 12
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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