Journal
CHEMOSPHERE
Volume 147, Issue -, Pages 451-459Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2015.12.108
Keywords
UV/H2O2 oxidation; Transformation products; Metabolite; Sulfapyridine; Ecotoxicity
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Funding
- European projects Atwat [PCIN-2013-074]
- Marie Curie SANITAS ITN [289193]
- Spanish Ministry of Economy and Competitiveness [CTM2012-38314-C02-01, CTM2013-48545-C2]
- Obra Social La Caixa through the University Ramon Llull Tractor project Electromembrane [2014-URL-Trac-002]
- Spanish Ministry of Economy and Competitiveness (MINECO)
- European Regional Development Fund (ERDF) in the frame of the Catalonia ERDF Operative programm
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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. (C) 2015 Elsevier Ltd. All rights reserved.
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