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Chemikalien, Wasser

P-Ident2 – Persistence Assessment in Surface Waters

addressing uncertainties in OECD 309 and OECD 308 studies


Plant protection products, human and veterinary pharmaceuticals, biocides and other chemicals can reach surface waters during their life cycles, by direct or diffuse entry routes or because they are in completely removed during waste water treatment. These chemicals may have harmful consequences for environmental organisms and also constitute a risk for raw water contamination for drinking water production. It is therefore crucial to assess persistence of chemicals in laboratory experiments. To characterize persistence in surface waters two test guidelines are relevant: ⁠OECD⁠ Test Guideline 308 ("Aerobic and Anaerobic Transformation in Aquatic Sediment Systems"), which aims to derive information on biotransformation at a water-sediment interface, and OECD Test Guideline 309 ("Aerobic mineralization in surface water - Simulation biodegradation test"), which measures biotransformation in a pelagic water body. The aim of the project was to be better able to separate characterizing biotransformation from the process of sorption. For this purpose, modified test designs and alternative evaluation of kinetic data were explored.

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Texte | 06/2023
Seitenzahl
251
Erscheinungsjahr
Autor(en)
Carolin Seller, Elizabeth Kitching, Laura Varga, Mark Honti, Kathrin Fenner
Sprache
Englisch
Forschungskennzahl
3717 65 409 0
Verlag
German Environment Agency
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13287 KB
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Schlagworte:
 transformation  Persistenz  Oberflächengewässer  OECD 308  OECD 309