Recalcitrant pharmaceuticals in the aquatic environment: A comparative screening study of their occurrence, formation of phototransformation products and their in vitro toxicity

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

  • Marlies Bergheim
  • Richard Gminski
  • Bernd Spangenberg
  • Malgorzata Dȩbiak
  • Alexander Bürkle
  • Volker Mersch-Sundermann
  • Klaus Kümmerer
  • Reto Gieré
Data allowing for a complete environmental risk assessment of pharmaceuticals and their photoderatives in the environment are still scarce. In the present study, in vitro toxicity and both bio- and photopersistence of various pharmaceuticals (aciclovir, allopurinol, cetirizine, cimetidine, fluconazole, hydrochlorothiazide, lisinopril, phenytoin, primidone, ranitidine, sotalol, sulpiride, tramadol and valsartane) as well as their phototransformation products were evaluated in order to fill data gaps and to help prioritise them for further testing. Twelve out of the fourteen compounds investigated were found to be neither readily nor inherently biodegradable in the Organisation of Economic Cooperation and Development-biodegradability tests. The study further demonstrates that the photo-induced transformation of the pharmaceuticals was faster upon irradiation with a Hg lamp (UV light) than with a Xe lamp emitting a spectrum that mimics sunlight. Comparing the non-irradiated with the respective irradiated solutions, a higher acute and chronic toxicity against bacteria was found for the irradiated solutions of seven compounds (cetirizine, cimetidine, hydrochlorothiazide, ranitidine, sulpiride, tramadol and valsartane). No cyto- and genotoxic effects were found in human cervical (HeLa) and liver (Hep-G2) cells for any of the investigated compounds or their phototransformation products. This comparative study documents that phototransformation products can arise as a result of UV treatment of wastewater containing these pharmaceuticals. It further demonstrates that some phototransformation products may have a higher environmental risk potential than the respective parent compounds because some phototransformation products exhibited a higher bacterial toxicity.
OriginalspracheEnglisch
ZeitschriftEnvironmental Chemistry
Jahrgang11
Ausgabenummer4
Seiten (von - bis)431-444
Anzahl der Seiten14
ISSN1448-2517
DOIs
PublikationsstatusErschienen - 2014

    Fachgebiete

  • Nachhaltigkeitswissenschaft - Biodegradation, HeLa cells, Hep-G2 cells, Irradiation, Predicted environmental concentrations (PECs), UV, Vibrio fischeri

DOI

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