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@INPROCEEDINGS{Gottselig:154739,
      author       = {Gottselig, Nina and Bol, Roland and Nischwitz, Volker and
                      Vereecken, Harry and Klumpp, Erwin},
      title        = {{F}ine colloidal and nanoparticulate {P}, {F}e, {A}l and
                      {C} distribution in stream water of a {G}erman mountainous
                      forest catchment},
      reportid     = {FZJ-2014-04019},
      year         = {2014},
      abstract     = {Natural fine colloids and nanoparticles have the potential
                      to encapsulate and bind nutrients. Their size range and
                      composition is therefore relevant to understand the
                      transport of essential nutrients like phosphorus in an
                      aquatic ecosystem. The aim of the study was to characterize
                      fine colloidal and nanoparticulate bound phosphorus of
                      distinct hydromorphological areas in stream water from a
                      forested experimental test site in a small headwater
                      catchment. Asymmetric Flow Field Flow Fractionation (AF4) is
                      a frequently used method when aiming at a separation and
                      characterization of colloids in aquatic systems. It combines
                      a large separation range (about 1 nm to 1 µm) with the
                      possibility to couple various detection devices online. The
                      separation is performed without a stationary phase in an
                      open channel which is subject to a force acting
                      perpendicular to the solvent flow and thus driving the
                      fractionation. The fractionation occurs on behalf of
                      diameter and diffusion rate of the particles. AF4 coupled
                      online to ICP-MS was applied for size resolved detection of
                      phosphorus (P), iron (Fe), and aluminum (Al) in the
                      fractions. Special focus was on P detection which is present
                      at low concentrations (few µg/L) in many natural waters.
                      Two distinct fractions (mean d~8 nm and ~150 nm) were
                      detected and characterized. For the small size fraction,
                      variations in P concentrations strongly correlated to the
                      course of Al variations; in addition, high Fe presence in
                      both fractions was accompanied by high P concentrations. The
                      developed methodology enables for the first time to trace
                      and conceptually define the inputs and source regions of
                      fine colloidal and nanoparticulate fractions within a small
                      river of a headwater catchment.},
      month         = {Mar},
      date          = {2014-03-11},
      organization  = {International Workshop InterNano,
                       Nanoparticles in Soils and Waters:
                       Fate, Transport and Effects, Landau in
                       der Pfalz (Germany), 11 Mar 2014 - 13
                       Mar 2014},
      subtyp        = {Other},
      cin          = {IBG-3 / ZEA-3},
      cid          = {I:(DE-Juel1)IBG-3-20101118 / I:(DE-Juel1)ZEA-3-20090406},
      pnm          = {246 - Modelling and Monitoring Terrestrial Systems: Methods
                      and Technologies (POF2-246) / 255 - Terrestrial Systems:
                      From Observation to Prediction (POF3-255)},
      pid          = {G:(DE-HGF)POF2-246 / G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/154739},
}