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@INPROCEEDINGS{Krause:837035,
      author       = {Krause, Lars and rodionov and schweizer and Siebers, Nina
                      and lehndorff and Klumpp, Erwin and Amelung, Wulf},
      title        = {{S}ize {D}istribution and {C}omposition of {S}oil
                      {N}anoparticles and {S}mall {M}icroaggregates in
                      {D}ependence of {C}lay {C}ontent},
      reportid     = {FZJ-2017-06048},
      year         = {2017},
      abstract     = {Soil microaggregates (SMA, 250 μm) are one important
                      factor influencing soil properties of ecological and
                      structural relevance. The characterization of SMA building
                      units composed of large (250-20 μm) and small SMA (20 μm)
                      and nanoparticles (NP, 220 nm) can be helpful to better
                      understand their formation and role in soil
                      ecosystems.German Luvisols with five different clay contents
                      were fractionated into macroaggregates (8000-250 μm); large
                      and small SMA and NP by wet sieving and pressure filtration.
                      Free and occluded SMA where distinguished by using
                      ultrasonication. The particle size distribution (PSD) of
                      isolated small SMA was determined by using the XPT particle
                      analyzer.NP size and composition were investigated using
                      field flow fractionation coupled to a UV detector and
                      ICP-MS. The percentage of occluded large and small SMA
                      increased with clay content.Strikingly the proportion of
                      free SMA was constant and independent from clay content.
                      There were no differences in the PSD of free and occluded
                      small SMA. The NP fraction showed three different size
                      classes which were mainly composed of Al, Si and Fe. Between
                      free and occluded NP the mass ratio of these elements was
                      different suggesting a crucial role in SMA formation.},
      month         = {Aug},
      date          = {2017-08-13},
      organization  = {Goldschmidt, Paris (France), 13 Aug
                       2017 - 18 Aug 2017},
      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)6},
      url          = {https://juser.fz-juelich.de/record/837035},
}