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Advanced oxidation of the antibiotic sulfapyridine by UV/H2O2: Characterization of its transformation products and ecotoxicological implications

The aim of the present work is to investigate, under lab-scale conditions, the removal and transformation of the antibiotic sulfapyridine (SPY) upon advanced oxidation with UV/H2O2. High resolution mass spectrometry (HRMS) analyses by means of an ultra-high pressure liquid chromatography (UHPLC)-linear ion trap high resolution Orbitrap instrument (LTQ-Orbitrap-MS) were carried out in order to elucidate the different transformation products (TPs) generated. The abatement (>99%) of the antibiotic was only achieved after 180 min, highlighting its resilience to elimination and its potential persistence in the environment A total of 10 TPs for SPY were detected and their molecular structures elucidated by means of MS2 and MS3 scans. Finally, the combined ecotoxicity at different treatment times was evaluated by means of bioluminescence inhibition assays with the marine bacteria Vibrio fischeri

The research leading to these results has received funding from by the European projects Atwat (PCIN-2013-074) and Marie Curie SANITAS ITN (289193) and the Spanish Ministry of Economy and Competitiveness (projects CTM2012-38314-C02-01 and CTM2013-48545-C2). R. Gonzalez-Olmos thanks to “Obra Social La Caixa” for funding through the University Ramon Llull Tractor project “Electromembrane” (2014-URL-Trac-002). ICRA research activity has been cofinanced by the Spanish Ministry of Economy and Competitiveness (MINECO) and by the European Regional Development Fund (ERDF) in the frame of the Catalonia ERDF Operative programm 2007e2013

© Chemosphere, 2016, vol. 147, p. 451-459

Elsevier

Author: García-Galán, Maria Jesús
Anfruns Bagaria, Alba
González Olmos, Rafael
Rodríguez Mozaz, Sara
Comas Matas, Joaquim
Date: 2016 March
Abstract: The aim of the present work is to investigate, under lab-scale conditions, the removal and transformation of the antibiotic sulfapyridine (SPY) upon advanced oxidation with UV/H2O2. High resolution mass spectrometry (HRMS) analyses by means of an ultra-high pressure liquid chromatography (UHPLC)-linear ion trap high resolution Orbitrap instrument (LTQ-Orbitrap-MS) were carried out in order to elucidate the different transformation products (TPs) generated. The abatement (>99%) of the antibiotic was only achieved after 180 min, highlighting its resilience to elimination and its potential persistence in the environment A total of 10 TPs for SPY were detected and their molecular structures elucidated by means of MS2 and MS3 scans. Finally, the combined ecotoxicity at different treatment times was evaluated by means of bioluminescence inhibition assays with the marine bacteria Vibrio fischeri
The research leading to these results has received funding from by the European projects Atwat (PCIN-2013-074) and Marie Curie SANITAS ITN (289193) and the Spanish Ministry of Economy and Competitiveness (projects CTM2012-38314-C02-01 and CTM2013-48545-C2). R. Gonzalez-Olmos thanks to “Obra Social La Caixa” for funding through the University Ramon Llull Tractor project “Electromembrane” (2014-URL-Trac-002). ICRA research activity has been cofinanced by the Spanish Ministry of Economy and Competitiveness (MINECO) and by the European Regional Development Fund (ERDF) in the frame of the Catalonia ERDF Operative programm 2007e2013
Format: application/pdf
ISSN: 0045-6535
Document access: http://hdl.handle.net/10256/13223
Language: eng
Publisher: Elsevier
Collection: MINECO/PN 2012-2015/CTM2012-38314-C02-01
MINECO/PN 2013-2016/CTM 2013-48545-C2
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.chemosphere.2015.12.108
Articles publicats (D-EQATA)
info:eu-repo/grantAgreement/EC/FP7/289193
Is part of: © Chemosphere, 2016, vol. 147, p. 451-459
Rights: Tots els drets reservats
Subject: Toxicologia ambiental
Environmental toxicology
Title: Advanced oxidation of the antibiotic sulfapyridine by UV/H2O2: Characterization of its transformation products and ecotoxicological implications
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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