Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 134: Issue 1
Synergistic extraction of Am(III), Th(IV) and U(VI) by PMBP and crown ethers
Authors:
C. Yonezawa Florida State University Department of Chemistry 32306-3006 Tallahassee Florida (USA)

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G. Choppin Florida State University Department of Chemistry 32306-3006 Tallahassee Florida (USA)

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Pages:
233–239
Online Publication Date:
14 Aug 2005
Publication Date:
17 Nov 1989
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02047286
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Abstract  

The extraction of UO 22+ , Am3+, and Th4+ by 1-phenyl-3-methyl-4-benzylpyrazolone with crown ethers was studies using 0.1M (NaClO4) aqueous phase and toluene. The crown ethers were 12C4, 15C5, 18C6, DB18C6 and DCH18C6. The synergic equilibrium constant did not show correlation between the cationic radii and the ether cavity size nor did the values follow a simple order of ether basicity. The ether basicity, steric effects, and the number of ether oxygens bound to the cation are the combined factors which seemingly determine the pattern of M(PMBP)n—CE interaction.

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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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