dc.creator | Carabajal, Maira Daniela | |
dc.creator | Arancibia, Juan Alberto | |
dc.creator | Escandar, Graciela Mónica | |
dc.date | 2019-04-23T14:04:45Z | |
dc.date | 2019-04-23T14:04:45Z | |
dc.date | 2017-04-01 | |
dc.date | 2019-04-23T14:04:45Z | |
dc.date | 2019-04-23T14:04:45Z | |
dc.date | 2017-04-01 | |
dc.date.accessioned | 2019-05-17T20:38:23Z | |
dc.date.available | 2019-05-17T20:38:23Z | |
dc.identifier | http://hdl.handle.net/2133/14424 | |
dc.identifier | http://hdl.handle.net/2133/14424 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/2682577 | |
dc.description | For the first time, a simple and environmentally friendly third-order/four-way calibration was applied for the simultaneous determination of five heavy-polycyclic aromatic hydrocarbons (PAHs) in interfering environments. The kinetic evolution of the Fenton degradation of benzo[a]pyrene, dibenz[a,h]anthracene, benzo[b]fluoranthene, benzo[k]fluoranthene and benz[a]anthracene was followed by recording full excitation-emission fluorescence matrices (EEFMs) of the samples at different reaction times, obtaining third-order EEFM-kinetic (EEFM-K) data. The sensitivity of the method was increased by carrying out the reaction in the presence of methyl-β-cyclodextrin. The four-way parallel factor (PARAFAC) algorithm, which was used for data processing, exploits the second-order advantage, allowing analyte concentrations to be estimated even in the presence of an uncalibrated fluorescent background. The clear superiority of the applied approach in comparison with second-order/three-way calibration performed with unreacting EEFMs is demonstrated, using two sets of samples with foreign compounds with particular spectral profiles. In one of the latter sets, the existence of a third-order advantage was explored and discussed. The feasibility to directly determine parts-per-trillion concentration levels of PAHs after a very simple solid-phase extraction with C18 membranes is established with natural water samples containing uncalibrated constituents. | |
dc.description | Fil: Carabajal, Maira Daniela. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina. | |
dc.description | Fil: Arancibia, Juan Alberto. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina. | |
dc.description | Fil: Escandar, Graciela Mónica. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina. | |
dc.format | application/pdf | |
dc.language | eng | |
dc.publisher | Elsevier | |
dc.relation | https://www.sciencedirect.com/science/article/pii/S0039914016309729?via%3Dihub#ack0005 | |
dc.relation | http://dx.doi.org/10.1016/j.talanta.2016.12.030 | |
dc.rights | https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es | |
dc.rights | Carabajal, Maira Daniela | |
dc.rights | Arancibia, Juan Alberto | |
dc.rights | Escandar, Graciela Mónica | |
dc.rights | Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. | |
dc.rights | Elsevier | |
dc.rights | Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0) | |
dc.rights | openAccess | |
dc.subject | Excitation-emission fluorescence matrix-kinetic data | |
dc.subject | Third-order/four-way calibration | |
dc.subject | Third-order advantage | |
dc.subject | Fenton reaction | |
dc.subject | Heavy-polycyclic aromatic hydrocarbons | |
dc.title | Excitation-emission fluorescence-kinetic data obtained by Fenton degradation. Determination of heavy-polycyclic aromatic hydrocarbons by four-way parallel factor analysis | |