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http://hdl.handle.net/2445/66291
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DC Field | Value | Language |
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dc.contributor.author | Carneado Moreno, Sergio | - |
dc.contributor.author | Peró Gascón, Roger | - |
dc.contributor.author | Ibáñez Palomino, Carmen | - |
dc.contributor.author | López Sánchez, José Fermín | - |
dc.contributor.author | Sahuquillo Estrugo, Àngels | - |
dc.date.accessioned | 2015-07-13T08:33:34Z | - |
dc.date.available | 2016-02-09T23:01:42Z | - |
dc.date.issued | 2015-02-09 | - |
dc.identifier.issn | 1759-9660 | - |
dc.identifier.uri | http://hdl.handle.net/2445/66291 | - |
dc.description.abstract | This paper reports a method developed for the simultaneous determination of methylmercury (MeHg+) and mercury(II) (Hg2+) species in water by liquid chromatography coupled to online UV irradiation and cold vapour atomic fluorescence spectrometry (LC-UV-CV-AFS) after online short-column preconcentration. This work focused on systematic studies of several variables to establish the maximum species recoveries, preconcentration factors and good reproducibility. The optimum results obtained were the following: 0.07 mmol L 1 2-mercaptoethanol as a complexing agent, precolumn conditioning with the mobile phase: a mixture of 80% of methanol (MeOH) and 20% of the following buffer: 0.0015 mol L 1 ammonium pyrrolidine dithiocarbamate (APDC) and 0.01 mol L 1 ammonium acetate (NH4CH3COO) at pH 5.5, 2 cm precolumn length and 2 mL min 1 sample flow. This method was applied to three water samples with different mineralisation contents. Various tests, based on spikes, were performed on each sample. A breakthrough volume of 4 mL was found. The recovery values of 72 3% and 81 5% for MeHg+ and Hg2+, respectively, were obtained regardless of the matrix composition, and the PF values were 30 and 32 for MeHg+ and Hg2+, respectively. The accuracy of the preconcentration method was verified by analysing a certified reference material. The detection limits (LDs) obtained were 15 ng L 1 for MeHg+ and 2 ng L 1 for Hg2+. The quantification limits (LQs) were 50 ng L 1 for both species. The established analytical online preconcentration method is suitable for the quantification of mercury species in a wide range of environmental waters. | - |
dc.format.extent | 8 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Royal Society of Chemistry | - |
dc.relation.isformatof | Versió postprint del document publicat a: http://dx.doi.org/10.1039/c4ay02929a | - |
dc.relation.ispartof | Analytical Methods, 2015, vol. 7, p. 2699-2706 | - |
dc.relation.uri | http://dx.doi.org/10.1039/c4ay02929a | - |
dc.rights | (c) Carneado, S. et al., 2015 | - |
dc.source | Articles publicats en revistes (Enginyeria Química i Química Analítica) | - |
dc.subject.classification | Mercuri | - |
dc.subject.classification | Cromatografia de líquids | - |
dc.subject.classification | Contaminació de l'aigua | - |
dc.subject.classification | Metilmercuri | - |
dc.subject.other | Mercury | - |
dc.subject.other | Liquid chromatography | - |
dc.subject.other | Water pollution | - |
dc.subject.other | Methylmercury | - |
dc.title | Mercury (II) and methylmercury determination in waters by liquid chromatography hyphenated to cold vapour atomic fluorescence spectrometry after online short-column preconcentration | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 648482 | - |
dc.date.updated | 2015-07-13T08:33:34Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Enginyeria Química i Química Analítica) |
Files in This Item:
File | Description | Size | Format | |
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648482.pdf | 475.51 kB | Adobe PDF | View/Open |
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