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Dr. Friedrich Werres

Funktionen

  • Lehrbeauftragte/r, Institut für Grenzflächen-Biotechnologie

Aktuelle Veranstaltungen

Keine aktuellen Veranstaltungen.

Vergangene Veranstaltungen (max. 10)

Keine vergangenen Veranstaltungen.

Die folgenden Publikationen sind in der Online-Universitätsbibliographie der Universität Duisburg-Essen verzeichnet. Weitere Informationen finden Sie gegebenenfalls auch auf den persönlichen Webseiten der Person.

    Artikel in Zeitschriften

  • Barion, Anastasia; Balsaa, Peter; Werres, Friedrich; Neuhaus, Ursula; Schmidt, Torsten Claus
    Stability of organochlorine pesticides during storage in water and loaded SPE disks containing sediment
    In: Chemosphere, Jg. 210, 2018, S. 57 – 64
    DOI, Online Volltext (Open Access)
  • Günter, Anastasia; Balsaa, Peter; Werres, Friedrich; Schmidt, Torsten Claus
    Influence of the drying step within disk-based solid-phase extraction both on the recovery and the limit of quantification of organochlorine pesticides in surface waters including suspended particulate matter
    In: Journal of Chromatography A, Jg. 1450, 2016, S. 1 – 8
    DOI
  • Erger, Christine; Balsaa, Peter; Werres, Friedrich; Schmidt, Torsten Claus
    Determination of organic priority pollutants in the low nanogram-per-litre range in water by solid-phase extraction disk combined with large-volume injection/gas chromatography–mass spectrometry
    In: Analytical and Bioanalytical Chemistry, Jg. 405, 2013, Nr. 15, S. 5215 – 5223
    DOI
  • Erger, Christine; Balsaa, Peter; Werres, Friedrich; Schmidt, Torsten Claus
    Multi-component trace analysis of organic xenobiotics in surface water containing suspended particular matter by solid phase extraction/gas chromatography–mass spectrometry
    In: Journal of Chromatography A, Jg. 1249, 2012, S. 181 – 189
    DOI
  • Erger, Christine; Balsaa, Peter; Werres, Friedrich; Schmidt, Torsten Claus
    Occurrence of residual water within disk based solid phase extraction and its effect on GC-MS measurement of organic extracts of environmental samples
    In: Analytical and Bioanalytical Chemistry, Jg. 403, 2012, Nr. 9, S. 2541 – 2552
    DOI
  • Kowal, Sebastian; Balsaa, Peter; Werres, Friedrich; Schmidt, Torsten Claus
    Determination of the polar pesticide degradation product N,N-dimethylsulfamide in aqueous matrices by UPLC-MS/MS
    In: Analytical and Bioanalytical Chemistry, Jg. 395, 2009, Nr. 6, S. 1787 – 1794
    DOI
  • Werres, Friedrich; Balsaa, Peter; Schmidt, Torsten Claus
    Total concentration analysis of polycylic aromatic hydrocarbons in aqueous samples with high suspended particulate matter content
    In: Journal of Chromatography A, Jg. 1216, 2009, Nr. 12, S. 2235 – 2240
    DOI