Document Detail


Efficient solvent system containing malonamides in room temperature ionic liquids: actinide extraction, fluorescence and radiolytic degradation studies.
MedLine Citation:
PMID:  23135734     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Solvent extraction studies of actinide metal ions such as Am(iii), U(vi), Np(iv), Np(vi), Pu(iv) were carried out in a nitric acid medium using two diamides (L) viz. (DMDBTDMA (N,N'-dimethyl-N,N'-dibutyl-2-tetradecylmalonamide) and DMDOHEMA (N,N'-dimethyl-N,N'-dioctyl-2-(2'-(hexyloxy)ethyl)-malonamide) dissolved in different room temperature ionic liquids (RTILs). The use of RTILs as the diluent significantly enhanced metal ion extraction as compared to that observed in non polar diluent such as n-dodecane. The effects of parameters such as kinetics, aqueous phase acidity (0.01-3 M HNO(3)), metal ion oxidation states, diamide concentration on the extraction of metal ions were studied. The stoichiometry of the extracted Am(iii) species using these diamides varied with ligand concentration viz. (Am.3L)(3+) ([L] = 0.005-0.02 M) and (Am.2-2.5L)(3+) ([L] = 0.05-0.1 M). Time resolved laser induced fluorescence spectroscopy (TRLFS) studies showed that the extracted species of Eu(iii) in an ionic liquid medium had no coordinated water molecules, in contrast to the presence of 1-2 water molecules in the extracted species in a n-dodecane medium. The radiolytic degradation behavior of the diamides/RTIL system has been studied using IR spectroscopy and gas chromatography-mass spectrometry (GC-MS). The data revealed that a significantly lower ligand concentration is required for actinide extraction in ionic liquids as the extraction media as compared to nonpolar diluents.
Authors:
Ajay B Patil; Priyanath Pathak; Vaishali S Shinde; Shrikant V Godbole; Prasanta K Mohapatra
Related Documents :
533824 - Quantitative analysis of monosialogangliosides by high-performance liquid chromatograph...
24767074 - Preconcentration of seleno-amino acids on a xad resin and determination in regional oli...
24573814 - Fragmentation study of noscapine derivatives under electrospray conditions.
108384 - Rapid and accurate stability-indicating assay for nitroglycerin.
15299244 - Electrochemical studies of the corrosion behaviour of titanium and the ti-6al-4v alloy ...
533824 - Quantitative analysis of monosialogangliosides by high-performance liquid chromatograph...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-8
Journal Detail:
Title:  Dalton transactions (Cambridge, England : 2003)     Volume:  -     ISSN:  1477-9234     ISO Abbreviation:  Dalton Trans     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101176026     Medline TA:  Dalton Trans     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India. ppathak@barc.gov.in.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Prokaryotic expression, purification and functional characterization of recombinant human RIP2.
Next Document:  Virtual liver resection: computer-assisted operation planning using a three-dimensional liver repres...