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Artículo

Excitation-emission fluorescence-kinetic data obtained by Fenton degradation. Determination of heavy-polycyclic aromatic hydrocarbons by four-way parallel factor analysis

Carabajal, Maira DanielaIcon ; Arancibia, Juan AlbertoIcon ; Escandar, Graciela MonicaIcon
Fecha de publicación: 04/2017
Editorial: Elsevier Science
Revista: Talanta
ISSN: 0039-9140
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
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Resumen

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.
Palabras clave: Excitation-Emission Fluorescence Matrix-Kinetic Data , Fenton Reaction , Heavy-Polycyclic Aromatic Hydrocarbons , Third-Order Advantage , Third-Order/Four-Way Calibration
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/50290
DOI: https://dx.doi.org/10.1016/j.talanta.2016.12.030
URL: https://www.sciencedirect.com/science/article/pii/S0039914016309729
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Articulos de INST.DE QUIMICA ROSARIO
Citación
Carabajal, Maira Daniela; Arancibia, Juan Alberto; Escandar, Graciela Monica; Excitation-emission fluorescence-kinetic data obtained by Fenton degradation. Determination of heavy-polycyclic aromatic hydrocarbons by four-way parallel factor analysis; Elsevier Science; Talanta; 165; 4-2017; 52-63
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