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dc.contributor.authorCervera Vidal, María Inés
dc.contributor.authorBeltran Arandes, Joaquin
dc.contributor.authorLopez, Francisco
dc.contributor.authorHernandez, Felix
dc.date.accessioned2012-09-03T08:54:51Z
dc.date.available2012-09-03T08:54:51Z
dc.date.issued2011-10-17
dc.identifier.citationAnalytica Chimica Acta (17 Oct. 2011), vol. 704, no. 1/2, 87–97
dc.identifier.issn0003-2670
dc.identifier.urihttp://hdl.handle.net/10234/45624
dc.description.abstractIn the present work, a rapid method with little sample handling has been developed for determination of 23 selected volatile organic compounds in environmental and wastewater samples. The method is based on headspace solid-phase microextraction (SPME) followed by gas chromatography coupled to tandem mass spectrometry (GC–MS/MS) determination using triple quadrupole analyzer (QqQ) in electron ionization mode. The best conditions for extraction were optimised with a factorial design taking into account the interaction between different parameters and not only individual effects of variables. In the optimized procedure, 4 mL of water sample were extracted using a 10 mL vial and adding 0.4 g NaCl (final NaCl content of 10%). An SPME extraction with carboxen/polydimethylsiloxane 75 μm fiber for 30 min at 50 °C (with 5 min of previous equilibration time) with magnetic stirring was applied. Chromatographic determination was carried out by GC–MS/MS working in Selected Reaction Monitoring (SRM) mode. For most analytes, two MS/MS transitions were acquired, although for a few compounds it was difficult to obtain characteristic abundant fragments. In those cases, a pseudo selected reaction monitoring (pseudo-SRM) with three ions was used instead. The intensity ratio between quantitation (Q) and confirmation (q) signals was used as a confirmatory parameter. The method was validated by means of recovery experiments (n = 6) spiking mineral water samples at three concentration levels (0.1, 5 and 50 μg L−1). Recoveries between 70% and 120% were generally obtained with relative standard deviations (RSDs) lower than 20%. The developed method was applied to surface water and wastewater from a wastewater treatment plant and from a municipal solid-waste treatment plant. Several compounds, like chloroform, benzene, trichloroethylene, toluene, tetrachloroethylene, dibromochloromethane, xylenes and bromoform were detected and confirmed in all the samples analyzedca_CA
dc.description.sponsorShipThis work has been developed under financial support of Bancaixa (P1·1B2009-25). The authors acknowledge the financial support of Generalitat Valenciana, as research group of excellence PROMETEO/2009/054 and the financial support from Ministerio de Ciencia e Innovación (project CTQ2009-12347)ca_CA
dc.format.extent11 p.ca_CA
dc.format.mimetypeapplication/pdfca_CA
dc.languageengca_CA
dc.language.isocatca_CA
dc.publisherElsevierca_CA
dc.rights© 2011 Elsevier B.V. All rights reservedca_CA
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/*
dc.subjectVolatile organic compoundsca_CA
dc.subjectGas chromatography tandem mass spectrometryca_CA
dc.subjectTriple quadrupoleca_CA
dc.subjectEnvironmental waterca_CA
dc.subjectWastewaterca_CA
dc.subjectHeadspace solid-phase microextractioca_CA
dc.titleDetermination of volatile organic compounds in water by headspace solid-phase microextraction gas chromatography coupled to tandem mass spectrometry with triple quadrupole analyzerca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttp://dx.doi.org/10.1016/j.aca.2011.08.012
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccessca_CA
dc.relation.publisherVersionhttp://www.sciencedirect.com/science/article/pii/S000326701101110X#ca_CA


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