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@INPROCEEDINGS{Krause:845116,
      author       = {Krause, Lars and Klumpp, Erwin and Siebers, Nina},
      title        = {{C}haracterization of small soil microaggregates and
                      nanocolloids using two flow field fractionation methods},
      reportid     = {FZJ-2018-02435},
      year         = {2018},
      abstract     = {Soil microaggregates (SMA, d <250 µm) play a key role for
                      the structure and ecological functions of soils. Small SMA
                      (<20 µm) are considered as the building units of these
                      aggregates. The knowledge about their distribution and
                      chemical composition helps to understand their role in SMA
                      formation and architecture. Our work focused on the
                      characterization of potential functional building units of
                      small SMA and their nucleus. We investigated the size
                      distribution and chemical composition of small SMA using
                      field flow fractionation methods. With centrifugal field
                      flow fractionation (CF3), we established a new method
                      allowing the fractionation of small SMA between 0.02-20 µm
                      which were further characterized by light scattering, UV and
                      ICP-MS. Furthermore, the nanocolloids (d<220 nm) were
                      analyzed with asymetric flow field flow fractionation (AF4)
                      coupled to a UV-detector and ICP-MS. The results showed that
                      the chemical composition as well as the size distribution of
                      small SMA including nanocolloids changed with the soil clay
                      content. The elements Al, Si, Fe and organic carbon in the
                      SMA size fractions revealed different mass ratios providing
                      a deeper insight into the composition of SMA building
                      units.},
      month         = {Apr},
      date          = {2018-04-08},
      organization  = {EGU General Assembly 2018, Vienna
                       (Austria), 8 Apr 2018 - 13 Apr 2018},
      subtyp        = {Other},
      cin          = {IBG-3},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255) / MAD Soil - MAD Soil - Microaggregates:
                      Formation and turnover of the structural building blocks of
                      soils (251268514)},
      pid          = {G:(DE-HGF)POF3-255 / G:(GEPRIS)251268514},
      typ          = {PUB:(DE-HGF)24},
      url          = {https://juser.fz-juelich.de/record/845116},
}