Photolysis of sulfamethoxypyridazine in various aqueous media: Aerobic biodegradation and identification of photoproducts by LC-UV-MS/MS

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

  • Nareman D H Khaleel
  • Waleed M M Mahmoud
  • Ghada M Hadad
  • Randa A Abdel-Salam
  • Klaus Kümmerer

Sulfonamides are one of the most frequently used antibiotics worldwide. Therefore, mitigation processes such as abiotic or biotic degradation are of interest. Photodegradation and biodegradation are the potentially significant removal mechanisms for pharmaceuticals in aquatic environments. The photolysis of sulfamethoxypyridazine (SMP) using a medium pressure Hg-lamp was evaluated in three different media: Millipore water pH 6.1 (MW), effluent from sewage treatment plant pH 7.6 (STP), and buffered demineralized water pH 7.4 (BDW). Identification of transformation products (TPs) was performed by LC-UV-MS/MS. The biodegradation of SMP using two tests from the OECD series was studied: Closed Bottle test (OECD 301 D), and Manometric Respirometry test (OECD 301 F). In biodegradation tests, it was found that SMP was not readily biodegradable so it may pose a risk to the environment. The results showed that SMP was removed completely within 128. min of irradiation in the three media, and the degradation rate was different for each investigated type of water. However, dissolved organic carbon (DOC) was not removed in BDW and only little DOC removal was observed in MW and STP, thus indicating the formation of TPs. Analysis by LC-UV-MS/MS revealed new TPs formed. The hydroxylation of SMP represents the main photodegradation pathway.

OriginalspracheEnglisch
ZeitschriftJournal of Hazardous Materials
Jahrgang244-245
Seiten (von - bis)654-661
Anzahl der Seiten8
DOIs
PublikationsstatusErschienen - 15.01.2013

DOI

Zuletzt angesehen

Publikationen

  1. Química verde e formação de profissionais do campo da química
  2. Der Übergang ins Postfossile Zeitalter- Übersehene Knappheiten
  3. Wann Deutschland sein Klimaziel für 2020 tatsächlich erreicht
  4. Single-Word Recognition Need Not Depend on Single-Word Features
  5. Conference report Spatial strategies at the land-sea interface
  6. Sensorimotor Control and Proprioception in Neurorehabilitation
  7. IT-Governance in der internationalen Hochschulkooperation (IT-GOV)
  8. „Es verschiebt sich alles viel viel mehr in die Kita und Schule“
  9. Einfluss von Nutzung auf die Gefäßpflanzenvielfalt in Wäldern
  10. Conceptualizing protected area research in a transdisciplinary
  11. Herausforderung Demographie und Wandel der Arbeitsgesellschaft
  12. Abschätzung der flächenhaften Verteilung der nassen Deposition
  13. Region und Bildung. Zukunftsfähige Bildung durch Sachunterricht
  14. Ganzheitliche Schulansätze zur Bildung für nachhaltigen Konsum
  15. On inhomogeneous Bernoulli convolutions and random power series
  16. Dispersal of typical woodland species by roe deer and wild boar
  17. Die Reiseanalyse - Instrument für Forschung und Marketingplanung
  18. 2. Methoden-Muster: Gestaltung von Beziehungen, Kontaktpflege, Klima
  19. Nachhaltig konsumieren und Ressourcen schonen als Bildungsthema
  20. Bildung für eine nachhaltige Entwicklung als regionales Projekt
  21. Education for Sustainable Development in Preschool Institutions
  22. Implications of financial transaction costs on the real economy
  23. EEG frequency tagging evidence of social interaction recognition
  24. Auch Langsamkeit findet Stadt: Tourismus und Touristen in Städten