Authors:
S. Patil Bhabha Atomic Research Centre Radiochemistry Division Trombay 400085 Bombay (India)

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V. Ramakrishna Bhabha Atomic Research Centre Radiochemistry Division Trombay 400085 Bombay (India)

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P. Kartha Bhabha Atomic Research Centre Radiochemistry Division Trombay 400085 Bombay (India)

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N. Gudi Bhabha Atomic Research Centre Radiochemistry Division Trombay 400085 Bombay (India)

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Abstract  

Solutions of HTTA are known to extract tetravalent actinides as M(TTA)4 species. When TOPO is added to HTTA solutions, the extracting of Np(IV) and Pu(IV) from aqueous perchloric acid was enhanced enormously. The species responsible for the enhanced extraction were identified from the extraction data by the slope ratio method and JOB's method. It was found that the predominant species responsible for enhancement in the extraction, when [HTTA]≫[TOPO], was M(TTA)4. TOPO for both Np(IV) and Pu(IV). Furthermore, it was established that depending on the relative concentrations of HTTA and TOPO, a number of species with the composition M(TTA)a(ClO4)4-a·b TOPO, with a ranging from 1 to 4 and b having values of 1 or 2, are involved in the extraction. Several equilibrium constant values are given.

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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)