Résumés
Résumé
Les vitesses de phototransformation de quatre hormones (estradiol, éthinylestradiol, progestérone, testostérone) et de deux anti-inflammatoires non stéroïdiens (diclofénac et naproxen) ont été étudiées en milieu aqueux dilué. Les expériences de photolyse ont été réalisées sous irradiation monochromatique (254 nm) et sous irradiation polychromatique (λ > 280 nm). Les résultats expérimentaux ont montré que les rendements quantiques de photodécomposition sont faibles (entre 0,02 et 0,08) à l’exception du diclofénac (de l’ordre de 0,30). L’influence de la concentration en oxygène dissous sur les rendements quantiques de photolyse a aussi été examinée. À partir des résultats obtenus, les rendements d’élimination des composés étudiés dans les conditions de désinfection des eaux par irradiation UV à 254 nm ont été estimés.
Mots clés:
- Estradiol,
- Ethinylestradiol,
- Progestérone,
- Testostérone,
- Diclofénac,
- Naproxen,
- Photolyse,
- Irradiation UV,
- Rendement quantique
Abstract
The photodecomposition of some emerging organic pollutants (4 hormones: estradiol, ethynylestradiol, progesterone, testosterone; and 2 nonsteroidal anti-inflammatory drugs: diclofenac and naproxen) has been investigated in dilute aqueous solution. The photolysis experiments were carried out under monochromatic irradiation (254 nm) and under polychromatic irradiation (λ > 280 nm). The calculated quantum yields of photodecomposition under monochromatic irradiations were low (between 0.02 and 0.08) except for diclofenac for which the value was about 0.30. The influence of oxygen concentration was also examined and the removal yields of these compounds under the conditions used for the UV-disinfection of drinking water at 254 nm were estimated.
Key words:
- Estradiol,
- Ethynylestradiol,
- Progesterone,
- Testosterone,
- Diclofenac,
- Naproxen,
- Photolysis,
- Ultraviolet Irradiation,
- Quantum yield
Parties annexes
Références bibliographiques
- ANDREOZZI R., M. RAFFAELE et P. NICKLAS (2003). Pharmaceuticals in STP effluents and their solar photodegradation in aquatic environments. Chemosphere, 50, 1319-1330.
- BOREEN A.L., W.A. ARNOLD et K. McNELL (2003). Photodegradation of pharmaceuticals in the aquatic environment: A review. Aquat. Sci., 65, 320-340.
- BUSER H.-R., T. POIGER et M.D. MÜLLER (1998). Occurrence and fate of the pharmaceutical drug diclofenac in surface water: rapid photodegradation in a lake. Environ. Sci. Technol., 32, 3449-3456.
- CANONICA S., L. MEUNIER et U. VON GUNTEN (2008). Phototransformation of selected pharmaceuticals during UV treatment of drinking water. Water Res., 42, 121-128.
- DANA G. (1998). Constantes des spectres ultraviolets, techniques de l’ingénieur, traité des constantes physico-chimiques, K 1015-1 – K1015-15, Tech. Ing.,15 p.
- HALLING-SØRENSEN B., S.N. NIELSEN, P.F. LANDZKY, F. INGERSLEV, H.C.H. LÜTZHØFT et S.E. JØRGENSEN (1998). Occurrence, fate and effects of pharmaceutical substances in the environment – A review. Chemosphere, 36, 357-393.
- HEBERER T. (2002). Occurrence, fate, and removal of pharmaceutical residues in the aquatic environment: a review of recent research data. Toxicol. Lett., 131, 5-17.
- IKEHATA K., N.J. NAGHASHKAR et M.G. EL-DIN (2006). Degradation of aqueous pharmaceuticals by ozonation and advanced oxidation process: A review. Ozone Sci. Eng., 28, 353-414.
- JANEX M.L., A. BRUCHET, Y. LEVI et T. TERNES (2002). Pharmaceutical compounds: occurrence in the environment and fate in drinking water treatment. Dans : Conférence AWWA WQTC, Seattle, États-Unis, 10-14 november 2002, 1625-1634.
- JOSCHEK H.-I. et L.I. GROSSWEINER (1966). Optical generation of hydrated electrons from aromatic compounds. II. J. Am. Chem. Soc., 88, 3261-3268.
- KOLPIN D., E.D. FURLONG, M.T. MEYER, E.M. THURMAN, S. ZAUGG, L.B. BARBER et H.T. BUXTON (2002). Pharmaceuticals, hormones, and other organic wastewater contaminants in U.S. streams, 1999-2000: A national reconnaissance. Environ. Sci. Technol., 36, 1202-1211.
- LIN A.Y-C. et M. REINHARD (2005). Photodegradation of common environmental pharmaceuticals and estrogens in river water. Environ. Toxicol. Chem., 24, 1303-1309.
- MAZELLIER P., M. SARAKHA, A. ROSSI et M. BOLTE (1998). The aqueous photochemistry of 2,6-dimethylphenol. Evidence for the fragmentation of the αC-C bond. J. Photochem. Photobiol. A: Chem., 115, 117-121.
- MAZELLIER P. et J. LEVERD (2003). Transformation of 4-tert-octylphenol by UV irradiation and by an H2O2/UV process in aqueous solution. Photochem. Photobiol., Sci., 2, 946-953.
- MAZELLIER P., L. MEITE et J. DE LAAT (2008), Photodegradation of the steroid hormones 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) in dilute aqueous solution. Chemosphere, 73, 1216–1223.
- MEITE L. (2007). Phototransformation de polluants organiques émergents (hormones, anti-inflammatoires) en solution aqueuse diluée. Thèse de Doctorat, Université de Poitiers, France, 230 p.
- NICOLE J., J. DE LAAT, M. DORÉ, J.P. DUGUET et C. BONNEL (1990). Use of UV radiation in water treatment measurement of photonic flux by hydrogen peroxide actinometry. Water Res., 24, 157-168.
- PACKER J.L, J.J. WERNER, D.E. LATCH, K. McNEILL et W.A. ARNOLD (2003). Photochemical fate of pharmaceuticals in the environment: naproxen, diclofenac, clofibric acid, and ibuprofen. Aquat. Sci., 65, 342-351.
- PEREIRA V.J., H.S. WEINBERG, K.G. LINDEN et P.C. SINGER (2007). UV degradation kinetics and modelling of pharmaceutical compounds in laboratory grade and surface water via direct and indirect photolysis at 254 nm. Environ. Sci. Technol., 41, 1682-1688.
- POIGER T., H.R. BUSER et M.D. MÜLLER (2001). Photodegradation of the pharmaceutical drug diclofenac in a lake: pathway, field measurements, and mathematical modelling. Environ. Toxicol. Chem., 20, 256-263.
- ROSENFELDT E.J. et K.G. LINDEN (2004). Degradation of endocrine disrupting chemicals bisphenol A, ethinylestradiol, and estradiol during UV photolysis and advanced oxidation processes. Environ. Sci. Technol., 38, 5476-5483.