dc.creator | Carabajal, Maira Daniela | |
dc.creator | Arancibia, Juan Alberto | |
dc.creator | Escandar, Graciela Monica | |
dc.date.accessioned | 2018-06-28T17:03:39Z | |
dc.date.accessioned | 2018-11-06T14:40:36Z | |
dc.date.available | 2018-06-28T17:03:39Z | |
dc.date.available | 2018-11-06T14:40:36Z | |
dc.date.created | 2018-06-28T17:03:39Z | |
dc.date.issued | 2017-12 | |
dc.identifier | Carabajal, 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.identifier | 0021-9673 | |
dc.identifier | http://hdl.handle.net/11336/50378 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1888893 | |
dc.description.abstract | For 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.language | eng | |
dc.publisher | Elsevier Science | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.chroma.2017.10.057 | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0021967317315637 | |
dc.rights | https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | HEAVY-POLYCYCLIC AROMATIC HYDROCARBONS | |
dc.subject | LIQUID CHROMATOGRAPHY-EXCITATION-EMISSION FLUORESCENCE | |
dc.subject | THIRD-ORDER ADVANTAGE | |
dc.subject | THIRD-ORDER/FOUR-WAY CALIBRATION | |
dc.title | On-line generation of third-order liquid chromatography–excitation-emission fluorescence matrix data. Quantitation of heavy-polycyclic aromatic hydrocarbons | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |