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000281801 0247_ $$2doi$$a10.1080/07366299.2016.1151308
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000281801 1001_ $$0P:(DE-Juel1)156235$$aKaufholz, Peter$$b0$$ufzj
000281801 245__ $$aSolvent extraction and fluorescence spectroscopic investigation of the selective Am(III) complexation with TS-BTPhen
000281801 260__ $$aPhiladelphia, PA$$bTaylor & Francis$$c2016
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000281801 520__ $$aAn americium(III) selective separation procedure was developed based on the coextraction of trivalent actinides (An(III)) and lanthanides (Ln(III)) by TODGA (N,N,N′,N′-tetraoctyl-diglycolamide), followed by Am(III) selective stripping using the hydrophilic complexing agent TS-BTPhen (3,3′,3ʺ,3ʺ′-[3-(1,10-phenanthroline-2,9-diyl)-1,2,4-triazine-5,5,6,6-tetrayl]tetrabenzenesulfonic acid). Distribution ratios were found at an acidity of 0.65 mol L−1 nitric acid that allowed for the separation of Am(III) from Cm(III) (DCm > 1; DAm < 1), giving a separation factor between curium and americium of SFCm/Am = 3.6 within the stripping step. Furthermore, Am(III) was readily separated from the lanthanides with the lowest selectivity for the Ln(III)/Am(III) separation being lanthanum with a separation factor of SFLa/Am = 20. The influence of the TS-BTPhen concentration on Am(III) distribution ratios was studied, giving a slope (logD vs. log[TS-BTPhen]) of approximately −1 for the stripping of An(III) with TS-BTPhen from the TODGA-based organic phase. Time-resolved laser fluorescence spectroscopy (TRLFS) measurements of curium(III) were used to analyze the speciation of Cm(III)-TS-BTPhen complexes. Both 1:1 and 1:2 complexes were identified in single-phase experiments. The formation of the 1:1 complex was suppressed in 0.5 mol L−1 nitric acid but it was significantly present in HClO4 at pH 3. Conditional stability constants of the complex species were calculated from the TRLFS experiments.
000281801 536__ $$0G:(DE-HGF)POF3-161$$a161 - Nuclear Waste Management (POF3-161)$$cPOF3-161$$fPOF III$$x0
000281801 536__ $$0G:(EU-Grant)323282$$aSACSESS - Safety of ACtinide Separation proceSSes (323282)$$c323282$$fFP7-Fission-2012$$x1
000281801 536__ $$0G:(DE-Juel1)HITEC-20170406$$aHITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406)$$cHITEC-20170406$$x2
000281801 7001_ $$0P:(DE-Juel1)130383$$aModolo, Giuseppe$$b1$$eCorresponding author$$ufzj
000281801 7001_ $$0P:(DE-Juel1)130438$$aWilden, Andreas$$b2$$ufzj
000281801 7001_ $$0P:(DE-Juel1)130407$$aSadowski, Fabian$$b3$$ufzj
000281801 7001_ $$0P:(DE-Juel1)130324$$aBosbach, Dirk$$b4$$ufzj
000281801 7001_ $$0P:(DE-HGF)0$$aWagner, Christoph$$b5
000281801 7001_ $$0P:(DE-HGF)0$$aGeist, Andreas$$b6
000281801 7001_ $$0P:(DE-HGF)0$$aPanak, Petra$$b7
000281801 7001_ $$0P:(DE-HGF)0$$aLewis, Frank$$b8
000281801 7001_ $$0P:(DE-HGF)0$$aHarwood, Laurence$$b9
000281801 773__ $$0PERI:(DE-600)2043256-2$$a10.1080/07366299.2016.1151308$$n2$$p126-140$$tSolvent extraction and ion exchange$$v34$$x0736-6299$$y2016
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