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@ARTICLE{Kaufholz:281801,
      author       = {Kaufholz, Peter and Modolo, Giuseppe and Wilden, Andreas
                      and Sadowski, Fabian and Bosbach, Dirk and Wagner, Christoph
                      and Geist, Andreas and Panak, Petra and Lewis, Frank and
                      Harwood, Laurence},
      title        = {{S}olvent extraction and fluorescence spectroscopic
                      investigation of the selective {A}m({III}) complexation with
                      {TS}-{BTP}hen},
      journal      = {Solvent extraction and ion exchange},
      volume       = {34},
      number       = {2},
      issn         = {0736-6299},
      address      = {Philadelphia, PA},
      publisher    = {Taylor $\&$ Francis},
      reportid     = {FZJ-2016-01470},
      pages        = {126-140},
      year         = {2016},
      abstract     = {An 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.},
      cin          = {IEK-6},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-6-20101013},
      pnm          = {161 - Nuclear Waste Management (POF3-161) / SACSESS -
                      Safety of ACtinide Separation proceSSes (323282) / HITEC -
                      Helmholtz Interdisciplinary Doctoral Training in Energy and
                      Climate Research (HITEC) (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF3-161 / G:(EU-Grant)323282 /
                      G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000373896500003},
      doi          = {10.1080/07366299.2016.1151308},
      url          = {https://juser.fz-juelich.de/record/281801},
}