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Uptake of actinides and lanthanides from nitric acid by dihexyl-N,N-diethylcarbamoylmethylphosphonate adsorbed on chromosorb

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Abstract

Batchwise uptake of Am(III), Pm(III), Eu(III), U(VI) and Pu(IV) by dihexyl-N,N-diethylcarbamoylmethylphosphonate (CMP) adsorbed on chromosorb (CAC) at nitric acid concentrations between 0.01 to 6.0M has been studied. The difference between the uptake behavior of Pu(IV) as compared to other actinides and lanthanides is discussed. The Am(III) and U(VI) species taken up on CAC were found to be Am(NO3)3·3CMP and UO2(NO3)2·2CMP, respectively. The equilibrium constants for the formation of these species have been evaluated and compared with those of similar species formed in liquid-liquid extraction. Batchwise loading of Pm(III) on CAC from 3.0M HNO3 has also been studied.

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  1. Radiochemistry Division, Bhabha Atomic Research Centre, 400085, Bombay, (India)

    J. N. Mathur, M. S. Murali & P. R. Natarajan

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  1. J. N. Mathur
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  2. M. S. Murali
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  3. P. R. Natarajan
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Mathur, J.N., Murali, M.S. & Natarajan, P.R. Uptake of actinides and lanthanides from nitric acid by dihexyl-N,N-diethylcarbamoylmethylphosphonate adsorbed on chromosorb. Journal of Radioanalytical and Nuclear Chemistry, Articles 162, 171–178 (1992). https://doi.org/10.1007/BF02039938

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  • DOI: https://doi.org/10.1007/BF02039938

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