Radiolytic stability of di-2-ethylhexyl-dioctyl diglycolamide

Autor:	K. A. Venkatesan, M. P. Antony, P. R. Vasudeva Rao, T. G. Srinivasan, Jammu Ravi, B. Robert Selvan
Rok vydání:	2014
Předmět:	Chemistry Radiolysis Extraction (chemistry) Radiochemistry Physical and Theoretical Chemistry Radiation stability Nuclear chemistry
Zdroj:	Radiochimica Acta. 102:451-457
ISSN:	2193-3405 0033-8230
DOI:	10.1515/ract-2013-2123
Popis:	The radiation stability of an unsymmetrical diglycolamide, di-2-ethylhexyl-di-octyl diglycolamide (DEHDODGA) has been evaluated under various process conditions. The influence of diluent (n-dodecane), phase modifier (N,N-dihexyl octanamide, DHOA), and nitric acid on the radiolysis of DEHDODGA was investigated. The distribution ratio (D) of Am(III), Eu(III), and Sr(II) in the irradiated solvent was determined as a function of absorbed dose of γ-radiation. The distribution ratios decreased with increase of absorbed dose, indicating the radiolytic degradation of DEHDODGA with increase of absorbed dose. The stripping behavior of Am(III) from the degraded organic phase was studied. Quantitative back extraction of trivalent metal ions from the irradiated organic phase was achieved in a single contact using the stripping formulation composed of dilute nitric acid and citric acid. Our studies indicated the robust nature of DEHDODGA with respect to radiolysis, and innocuous nature of degradation products.
Databáze:	OpenAIRE
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