h1

% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@PHDTHESIS{Reininghaus:951629,
      author       = {Reininghaus, Mathias},
      othercontributors = {Schäffer, Andreas and Witt, Gesine and Schüttrumpf,
                          Holger},
      title        = {{E}valuation and development of passive sampling techniques
                      on the basis of sediment samples from the {B}altic and
                      {N}orth {S}eas},
      school       = {RWTH Aachen University},
      type         = {Dissertation},
      address      = {Aachen},
      publisher    = {RWTH Aachen University},
      reportid     = {RWTH-2023-02099},
      pages        = {1 Online-Ressource : Illustrationen, Diagramme, Karten},
      year         = {2023},
      note         = {Veröffentlicht auf dem Publikationsserver der RWTH Aachen
                      University; Dissertation, RWTH Aachen University, 2023},
      abstract     = {During the course of industrialization and within the
                      decades that followed, countless chemicals were and continue
                      to be released into the environment whose effects, pathways
                      and fate are largely unknown. The aftercare necessitated by
                      this nonchalant approach continues to reveal a large number
                      of these chemicals in numerous environmental compartments
                      decades after their release into the environment. Chemicals
                      tend to accumulate where their chemical-physical properties
                      favor. Hydrophobic organic chemicals (HOCs) are ubiquitously
                      distributed, but prefer to bind to particles and thus, when
                      considering the aquatic environment, are accumulating within
                      the sediment. In the sediment, these contaminants then
                      either bind to the organic particles or partially dissolve
                      in the pore water. Both the part of the pollutants that is
                      in the pore water and the part of the pollutants that
                      remains bound to particles can be detected and quantified by
                      modern measurement methods. Particularly the freely
                      dissolved fraction of the HOCs poses a risk to organisms
                      that have contact with the sediment, albeit in an indirect
                      way. This freely dissolved fraction or freely dissolved
                      concentration (Cfree) has been investigated in detail within
                      the present study through numerous surface sediments and
                      additional sediment cores. In order to determine the freely
                      dissolved concentration of polycyclic aromatic hydrocarbons
                      (PAHs) and polychlorinated biphenyls (PCBs) in sediments,
                      solid phase microextraction (SPME) was used. This passive
                      sampling method, using known partition coefficients, allows
                      the determination of concentrations of contaminants in
                      sediment pore water. Freely dissolved concentrations (Cfree)
                      of PAHs and PCBs were determined (i) in sediment cores from
                      the Baltic Sea (Kattegat) and the Skagerrak, (ii) in surface
                      sediments along the German Baltic Sea coast, (iii) in
                      surface sediments from the North Sea (German EEZ and Wadden
                      Sea), (iv) in surface sediments from various canals between
                      Germany and France (Paris) including numerous samples from
                      the Rhine, and (v) in surface sediments from the
                      Darss-Zingst Bodden chain. The sediments were examined in
                      the laboratory (ex-situ) and, if possible, in the field
                      (in-situ). A detailed comparison of the two methods
                      identified their respective advantages and disadvantages. In
                      addition, supplementary parameters were determined on
                      certain samples and the concentrations of PAHs and PCBs in
                      the total sediment (Ctotal) were determined for multiple
                      sediments. The data acquired through these measurements and
                      the endpoints calculated from them provide an unprecedented
                      comprehensive overview of the sediment contamination
                      situation along the German coast of the North Sea and Baltic
                      Sea and furthermore for numerous stretches of water between
                      Germany and France. Using these data, contamination hotspots
                      and variations could be identified and the HOC`s
                      contribution to the total toxic potential of the sediments
                      could be presented. Ultimately, to further advance the use
                      of this prospective passive sampling method, additional
                      partition coefficients for alkylated PAHs were determined
                      enabling the measurement of these important pollutants via
                      SPME.},
      cin          = {162710 / 160000},
      ddc          = {570},
      cid          = {$I:(DE-82)162710_20140620$ / $I:(DE-82)160000_20140620$},
      typ          = {PUB:(DE-HGF)11},
      doi          = {10.18154/RWTH-2023-02099},
      url          = {https://publications.rwth-aachen.de/record/951629},
}