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@ARTICLE{Gottselig:829875,
      author       = {Gottselig, Nina and Nischwitz, Volker and Meyn, Thomas and
                      Amelung, Wulf and Bol, Roland and Halle, Cynthia and
                      Vereecken, Harry and Siemens, Jan and Klumpp, Erwin},
      title        = {{P}hosphorus {B}inding to {N}anoparticles and {C}olloids in
                      {F}orest {S}tream {W}aters},
      journal      = {Vadose zone journal},
      volume       = {16},
      number       = {3},
      issn         = {1539-1663},
      address      = {Madison, Wis.},
      publisher    = {SSSA},
      reportid     = {FZJ-2017-03491},
      pages        = {0 -},
      year         = {2017},
      abstract     = {Elemental contents in catchment headwaters are indicative
                      of the load of nutrients and minerals cycled or released
                      from ecosystems, yet little is known about natural colloids
                      (1–1000 nm) and especially natural nanoparticles (NNP,
                      1–100 nm) as nutrient carriers in forested headwater
                      streams. We hypothesize that the majority of P is bound to
                      NNP in forest streams but that their size and composition
                      varies for different forested headwater systems. Four
                      forested sites in Germany and one in Norway, which differ in
                      total P content, were sampled for stream water and analyzed
                      for colloids. The samples were fractionated using field flow
                      fractionation coupled to inductively coupled plasma–mass
                      spectrometry and an organic C detector. The results showed
                      that NNP and colloids from all sites could be separated into
                      three distinct fractions (approximately 1–20 nm, >20–60
                      nm, and >60 nm). The elemental concentrations of P, organic
                      C, Al, Si, Fe, and Mn in the fractions differed among the
                      five sites. However, cluster analysis showed that each
                      fraction had unique elemental signatures with different
                      preferential P binding partners. Phosphorus was
                      preferentially associated with Fe in the smallest size
                      fraction, with an increasing contribution of
                      organic-C-associated P as the fraction size increased. The
                      largest fraction was dominated by clay minerals. Also, the
                      data indicated that the relative contribution of the NNP and
                      colloidal fractions for ecosystem nutrient supply rises as
                      total P concentrations decline. The study highlighted the
                      still underestimated importance of NNP for matter transport
                      in forest streams and thus P cycling.},
      cin          = {IBG-3 / ZEA-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118 / I:(DE-Juel1)ZEA-3-20090406},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255)},
      pid          = {G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000397092300001},
      doi          = {10.2136/vzj2016.07.0064},
      url          = {https://juser.fz-juelich.de/record/829875},
}