dc.creatorCarabajal, Maira Daniela
dc.creatorArancibia, Juan Alberto
dc.creatorEscandar, Graciela Mónica
dc.date2019-04-23T14:04:45Z
dc.date2019-04-23T14:04:45Z
dc.date2017-04-01
dc.date2019-04-23T14:04:45Z
dc.date2019-04-23T14:04:45Z
dc.date2017-04-01
dc.date.accessioned2019-05-17T20:38:23Z
dc.date.available2019-05-17T20:38:23Z
dc.identifierhttp://hdl.handle.net/2133/14424
dc.identifierhttp://hdl.handle.net/2133/14424
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/2682577
dc.descriptionFor 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.descriptionFil: Carabajal, Maira Daniela. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina.
dc.descriptionFil: Arancibia, Juan Alberto. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina.
dc.descriptionFil: Escandar, Graciela Mónica. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina.
dc.formatapplication/pdf
dc.languageeng
dc.publisherElsevier
dc.relationhttps://www.sciencedirect.com/science/article/pii/S0039914016309729?via%3Dihub#ack0005
dc.relationhttp://dx.doi.org/10.1016/j.talanta.2016.12.030
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.rightsCarabajal, Maira Daniela
dc.rightsArancibia, Juan Alberto
dc.rightsEscandar, Graciela Mónica
dc.rightsUniversidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas.
dc.rightsElsevier
dc.rightsAtribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)
dc.rightsopenAccess
dc.subjectExcitation-emission fluorescence matrix-kinetic data
dc.subjectThird-order/four-way calibration
dc.subjectThird-order advantage
dc.subjectFenton reaction
dc.subjectHeavy-polycyclic aromatic hydrocarbons
dc.titleExcitation-emission fluorescence-kinetic data obtained by Fenton degradation. Determination of heavy-polycyclic aromatic hydrocarbons by four-way parallel factor analysis


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