The effect of the simultaneous presence of four non-steroidal anti-inflammatory drugs during the vacuum ultraviolet photolysis

Rózsa, Georgina and Arany, Eszter and Kozmér, Zsuzsanna and Alapi, Tünde and Dombi, András: The effect of the simultaneous presence of four non-steroidal anti-inflammatory drugs during the vacuum ultraviolet photolysis. Proceedings of the International Symposium on Analytical and Environmental Problems, (21). pp. 406-409. (2015)

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Abstract

Non-steroidal anti-inflammatory drugs (NSAIDs) are somewhat recently recognized pollutants, which are widely used by the society. Their sources in natural waters are the domestic and industrial effluents. Moreover, their possible interference with the water cycle and concurrent effects on the human health system has been implicated. Advanced oxidation processes (AOPs) could help to solve this problem as alternative methods, which are based on the generation of reactive radicals to induce the transformation of organic contaminants beside biological methods, which are often ineffective for this purpose. Vacuum ultraviolet (VUV) photolysis is a suitable method among AOPs to study the effects of different parameters on the radical set and on the degradation of organic contaminants, since the generated radical set is well-known. In this study, we aimed to investigate the simultaneous determination of pharmaceuticals (four non-steroidal anti-inflammatory drugs), namely ibuprofen, ketoprofen, naproxen and diclofenac. In this work we examined the degradation of compounds simultaneously, as wastewaters generally are multi-component solutions, where the components can effect the rate of decomposition of each other due to the competition for the reactive radicals. The pairing of the binary compounds in solution were ibuprofen+naproxen and ketoprofen+diclofenac, in order to be able to separate them by liquid chromatography. The results show that under the applied conditions (photon flux an initial concentration) the rates of the simultaneous degradation were slightly lower than in cases of one-component solutions because of the competition of the pharmaceuticals for the reactive species as we expected, however the influence of the competition was minor.

Item Type: Article
Journal or Publication Title: Proceedings of the International Symposium on Analytical and Environmental Problems
Date: 2015
Volume: 21
Page Range: pp. 406-409
ISBN: 978-963-306-411-5
Uncontrolled Keywords: Környezetkémia, Analitikai kémia
Additional Information: Bibliogr.: 409. p. ; összefoglalás angol nyelven
Date Deposited: 2018. Dec. 10. 14:41
Last Modified: 2018. Dec. 10. 14:41
URI: http://acta.bibl.u-szeged.hu/id/eprint/56012

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