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@ARTICLE{VortmannWesthoven:851217,
      author       = {Vortmann-Westhoven, Britta and Diehl, Marcel and Winter,
                      Martin and Nowak, Sascha},
      title        = {{I}on {C}hromatography with {P}ost-column {R}eaction and
                      {S}erial {C}onductivity and {S}pectrophotometric {D}etection
                      {M}ethod {D}evelopment for {Q}uantification of {T}ransition
                      {M}etal {D}issolution in {L}ithium {I}on {B}attery
                      {E}lectrolytes},
      journal      = {Chromatographia},
      volume       = {81},
      number       = {7},
      issn         = {0009-5893},
      address      = {Wiesbaden},
      publisher    = {Vieweg},
      reportid     = {FZJ-2018-04917},
      pages        = {995-1002},
      year         = {2018},
      abstract     = {We present a method for the separation and determination of
                      transition metals in electrolytes based on ion
                      chromatography (IC) with post-column reaction (PCR) and
                      serial conductivity and spectrophotometric detection. Three
                      IC columns [Metrosep C4—250/4.0 (column A), Metrosep
                      C6—250/4.0 (column B), and Nucleosil 100-5SA—250/4.6
                      (column C)] with different capacities, and stationary phases
                      were used and compared with each other for method
                      development. All spectrophotometric measurements were
                      carried out with 4-(2-pyridylazo)resorcinol (PAR) as PCR
                      reagent at a wavelength of 500 nm. To characterize the
                      precision of the separation, the selectivity for the
                      analysis of transition metals (nickel, cobalt, copper, and
                      manganese) in the presence of large amounts of lithium and
                      the resolution of the peaks were determined and compared
                      with one another. Furthermore, the limits of detection (LOD)
                      and quantification (LOQ) were determined for the transition
                      metals. The LODs and LOQs determined by column C were as
                      follows: cobalt (LOD/LOQ): 9.4 µg L−1/31.3 µg L−1,
                      manganese (LOD/LOQ): 7.0 µg L−1/23.5 µg L−1, and
                      nickel (LOD/LOQ): 6.3 µg L−1/21.1 µg L−1. Finally, the
                      concentration of transition metal dissolution of the cathode
                      material Li1Ni1/3Co1/3Mn1/3O2 (NCM) was investigated for
                      different charge cut-off voltages by the developed IC
                      method.},
      cin          = {IEK-12},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {131 - Electrochemical Storage (POF3-131)},
      pid          = {G:(DE-HGF)POF3-131},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000436846100004},
      doi          = {10.1007/s10337-018-3540-2},
      url          = {https://juser.fz-juelich.de/record/851217},
}