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@ARTICLE{Wehrhan:9702,
      author       = {Wehrhan, A. and Streck, T. and Groeneweg, J. and Vereecken,
                      H. and Kasteel, R.},
      title        = {{L}ong-{T}erm {S}orption and {D}esorption of {S}ulfadiazine
                      in {S}oil: {E}xperiments and {M}odeling},
      journal      = {Journal of environmental quality},
      volume       = {39},
      issn         = {0047-2425},
      address      = {Madison, Wis.},
      publisher    = {ASA [u.a.]},
      reportid     = {PreJuSER-9702},
      pages        = {654 - 666},
      year         = {2010},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Antibiotics, such as sulfadiazine (SDZ), may enter arable
                      soil by spreading of manure of medicated husbandry or
                      directly by the excrement of grazing animals. Knowledge of
                      the fate of antibiotics in soils is crucial for assessing
                      the environmental risk of these compounds, including
                      possible transport to ground water. Kinetic sorption of
                      (14)C-labeled SDZ
                      (4-amino-N-pyrimidin-2-yl-benzenesulfonamide) was
                      investigated using the batch technique. The batch
                      sorption-desorption experiments were conducted at various
                      concentration levels (0.044-13 mg L(-1) initial solute
                      concentration) and time scales (0.75-272 d). Sorption of
                      (14)C-SDZ in the investigated silty loam was time dependent
                      and strongly nonlinear in the solution phase concentration.
                      The time to reach an apparent sorption equilibrium was about
                      20 d. However, desorption was very slow, and 41 d were
                      insufficient to reach the desorption equilibrium. An inverse
                      modeling technique was used to identify relevant sorption
                      processes of (14)C-SDZ during the batch experiments. Among
                      the investigated two- and three-domain sorption models,
                      adsorption and desorption of (14)C-SDZ were best described
                      with a new model defining two sorption domains and four
                      parameters. Whereas sorption in the first sorption domain
                      was nonlinear and instantaneous, solute uptake in the second
                      sorption domain was rate limited following first-order
                      kinetics. Desorption followed the same rate law until an
                      equilibrium distribution was reached. After that, desorption
                      was assumed to be impossible due to partly irreversible
                      sorption. Although the proposed model needs further
                      validation, it contributes to the discussion on complex
                      sorption processes of organic chemicals in soils.},
      keywords     = {Adsorption / Anti-Infective Agents: chemistry / Models,
                      Chemical / Soil: analysis / Sulfadiazine: chemistry /
                      Anti-Infective Agents (NLM Chemicals) / Soil (NLM Chemicals)
                      / Sulfadiazine (NLM Chemicals) / J (WoSType)},
      cin          = {ICG-4 / JARA-ENERGY / JARA-HPC},
      ddc          = {333.7},
      cid          = {I:(DE-Juel1)VDB793 / $I:(DE-82)080011_20140620$ /
                      $I:(DE-82)080012_20140620$},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Environmental Sciences},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:20176838},
      UT           = {WOS:000275383600022},
      doi          = {10.2134/jeq2009.0001},
      url          = {https://juser.fz-juelich.de/record/9702},
}