UV-visible photodegradation of naproxen in water – Structural elucidation of photoproducts and potential toxicity - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue European Journal of Mass Spectrometry Année : 2020

UV-visible photodegradation of naproxen in water – Structural elucidation of photoproducts and potential toxicity

Résumé

The UV-visible photodegradation of Naproxen (6-methoxy-α-methyl-2-naphthaleneacetic acid, CAS: 22204-53-1), one of the most used and detected non-steroidal anti-inflammatory drugs (NSAIDs) in the world, and its ecotoxicological consequences were investigated in an aqueous medium. The photo-transformation products were analyzed and the structures of photoproducts were elucidated using gas chromatography coupled with tandem mass spectrometry (GC-MS/MS) and high-performance liquid chromatography coupled with ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry (LC-FTICR-MS). Seven photoproducts were detected and characterized, photo-transformation mechanisms have been postulated to rationalize their formation under irradiation. In silico Q.S.A.R. (Quantitative Structure-Activity Relationship) toxicity predictions were performed with the Toxicity Estimation Software Tool (T.E.S.T.) and in vitro assays were carried out on Vibrio fischeri bacteria. Some of the obtained photoproducts exhibit higher potential toxicity than Naproxen itself but the whole toxicity of the irradiated solution is not of major concern.

Domaines

Chimie

Dates et versions

hal-04477965 , version 1 (26-02-2024)

Identifiants

Citer

Noemi Cazzaniga, Zsuzsanna Varga, Edith Nicol, Stéphane Bouchonnet. UV-visible photodegradation of naproxen in water – Structural elucidation of photoproducts and potential toxicity. European Journal of Mass Spectrometry, 2020, 26 (6), pp.400-408. ⟨10.1177/1469066720973412⟩. ⟨hal-04477965⟩
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