Study of cyanotoxin degradation and evaluation of their transformation products in surface waters by LC-QTOF MS
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Otros documentos de la autoría: León, Cristina; Boix Sales, Clara; Beltrán Iturat, Eduardo; Peñuela, Gustavo; Lopez, Francisco; Sancho, Juan V; Hernandez, Felix
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INVESTIGACIONMetadatos
Título
Study of cyanotoxin degradation and evaluation of their transformation products in surface waters by LC-QTOF MSAutoría
Fecha de publicación
2019-08Editor
ElsevierISSN
0045-6535Cita bibliográfica
LEÓN, Cristina, et al. Study of cyanotoxin degradation and evaluation of their transformation products in surface waters by LC-QTOF MS. Chemosphere, 2019, vol. 229, p. 538-548Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
Chemosphere, 2019, vol. 229Versión
info:eu-repo/semantics/submittedVersionPalabras clave / Materias
Resumen
In the present work, the degradation of three cyanotoxins from the hepatotoxins group was investigated under laboratory-controlled experiments in water samples. Surface waters spiked with microcystin-LR (MC-LR), ... [+]
In the present work, the degradation of three cyanotoxins from the hepatotoxins group was investigated under laboratory-controlled experiments in water samples. Surface waters spiked with microcystin-LR (MC-LR), nodularin (NOD) and cylindrospermopsin (CYN) were subjected to hydrolysis, chlorination and photo-degradation, under both sunlight (SL) and ultraviolet (UV) radiation. A total of 12 transformation products (TPs) were detected and tentatively identified by liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (LC-QTOF MS). These comprised: 6 chlorination TPs (3 from CYN and 3 from MC-LR, 2 isomers); 4 UV TPs (all from CYN); and 2 sunlight TPs (one isomer from MC-LR and another from NOD). No TPs were observed under hydrolysis conditions. The chemical structures for all TPs were tentatively proposed based on the accurate-mass QTOF MS full-spectra. Analysis of real-world samples collected from the Peñol reservoir (Antioquia, Colombia) revealed the presence of MC-LR and CYN as well as a sunlight TP identified in the laboratory experiments. Data presented in this article will assist further research on TPs potentially formed in future tertiary degradation processes applied for the removal of organic micro-pollutants in water; as well as improving available knowledge on the toxic implications of cyanobacterial toxins TPs in surface waters. [-]
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https://www.sciencedirect.com/science/article/pii/S0045653519308823Proyecto de investigación
Colciencias; Generalitat Valenciana: Prometeo II/2014/023; University of Antioquia; CODI of the Vice Presidency for Research of the University of AntioquiaDerechos de acceso
Copyright © Elsevier B.V.
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