dc.creatorCarabajal, Maira Daniela
dc.creatorArancibia, Juan Alberto
dc.creatorEscandar, Graciela Monica
dc.date.accessioned2018-06-28T17:03:39Z
dc.date.accessioned2018-11-06T14:40:36Z
dc.date.available2018-06-28T17:03:39Z
dc.date.available2018-11-06T14:40:36Z
dc.date.created2018-06-28T17:03:39Z
dc.date.issued2017-12
dc.identifierCarabajal, Maira Daniela; Arancibia, Juan Alberto; Escandar, Graciela Monica; On-line generation of third-order liquid chromatography–excitation-emission fluorescence matrix data. Quantitation of heavy-polycyclic aromatic hydrocarbons ; Elsevier Science; Journal of Chromatography - A; 1527; 12-2017; 61-69
dc.identifier0021-9673
dc.identifierhttp://hdl.handle.net/11336/50378
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1888893
dc.description.abstractFor the first time, third-order liquid chromatography with excitation-emission fluorescence matrix detection (LC-EEFM) data were generated on-line and chemometrically processed for the simultaneous quantitation of the heavy-polycyclic aromatic hydrocarbons fluoranthene, pyrene, benz[a]anthracene, chrysene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, and dibenz[a,h]anthracene. The applied experimental strategy is very simple, and is based on the reduction of the linear flow rate by fitting a larger diameter connecting-tube between the column outlet and the fluorimetric detector. In this way, EEFMs were successfully recorded on-line, without involving a large total analysis time. Because in the studied system quadrilinearity was fulfilled, four-way parallel factor (PARAFAC) analysis was applied for data processing. The second-order advantage, which is an intrinsic property of data of at least second-order, allowed the quantification of the analytes in interfering media. Moreover, resolution of the system with a high degree of collinearity was achieved thanks to the third-order advantage. In addition to a selectivity improvement, third-order/four-way calibration increased the sensitivity, with limits of detection in the range of 0.4 − 2.9 ng mL−1. After a solid-phase extraction procedure with C18 membranes, considerably lower concentrations (between 0.033–2.70 ng mL−1) were determined in real waters, with most recoveries in the range 90–106%.
dc.languageeng
dc.publisherElsevier Science
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.chroma.2017.10.057
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0021967317315637
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectHEAVY-POLYCYCLIC AROMATIC HYDROCARBONS
dc.subjectLIQUID CHROMATOGRAPHY-EXCITATION-EMISSION FLUORESCENCE
dc.subjectTHIRD-ORDER ADVANTAGE
dc.subjectTHIRD-ORDER/FOUR-WAY CALIBRATION
dc.titleOn-line generation of third-order liquid chromatography–excitation-emission fluorescence matrix data. Quantitation of heavy-polycyclic aromatic hydrocarbons
dc.typeArtículos de revistas
dc.typeArtículos de revistas
dc.typeArtículos de revistas


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