An unusual extraction behavior of americium(III) and dioxouranium(VI) frompicric acid medium using 18-crown-6 as neutral oxodonor

Authors
Mohapatra, PK Manchanda, VK
Citation
Pk. Mohapatra et Vk. Manchanda, An unusual extraction behavior of americium(III) and dioxouranium(VI) frompicric acid medium using 18-crown-6 as neutral oxodonor, J RAD NUCL, 241(1), 1999, pp. 101-105
Citations number
14
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
ISSN journal
02365731 → ACNP
Volume
241
Issue
1
Year of publication
1999
Pages
101 - 105
Database
ISI
SICI code
0236-5731(199907)241:1<101:AUEBOA>2.0.ZU;2-3
Abstract
The extraction behavior of Am3+ and UO22+ is investigated employing chlorof orm solution of 18-crown-6 as the organic phase and picrate solution at pH 3.0 as the aqueous phase. In contrast to the commonly observed behavior, th e extraction of Am3+ is preferred to that of UO22+. This unusual separation behavior is investigated as a function of several variable parameters such as crown ether concentration, picric acid concentration, inert electrolyte concentration, nature of diluent etc. Thermodynamic parameters are also ev aluated.