Feasibility of the determination of polycyclic aromatic hydrocarbons in edible oils via unfolded partial least-squares/residual bilinearization and parallel factor analysis of fluorescence excitation emission matrices
Author
dc.contributor.author
Alarcón, Francis
Author
dc.contributor.author
Báez Contreras, María Estrella
es_CL
Author
dc.contributor.author
Bravo, Manuel
es_CL
Author
dc.contributor.author
Richter Duk, Pablo
es_CL
Author
dc.contributor.author
Escandar, Graciela M.
es_CL
Author
dc.contributor.author
Olivieri, Alejandro C.
es_CL
Author
dc.contributor.author
Fuentes Pérez, Edwar
es_CL
Admission date
dc.date.accessioned
2014-01-23T19:15:36Z
Available date
dc.date.available
2014-01-23T19:15:36Z
Publication date
dc.date.issued
2013-06-15
Cita de ítem
dc.identifier.citation
Talanta 103 (2013) 361–370
en_US
Identifier
dc.identifier.other
DOI: 10.1016/j.talanta.2012.10.080
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/121766
General note
dc.description
Artículo de publicación ISI.
en_US
Abstract
dc.description.abstract
The possibility of simultaneously determining seven concerned heavy polycyclic aromatic hydrocarbons
(PAHs) of the US-EPA priority pollutant list, in extra virgin olive and sunflower oils was examined
using unfolded partial least-squares with residual bilinearization (U-PLS/RBL) and parallel factor
analysis (PARAFAC). Both of these methods were applied to fluorescence excitation emission matrices.
The compounds studied were benzo[a]anthracene, benzo[b]fluoranthene, benzo[k]fluoranthene,
benzo[a]pyrene, dibenz[a,h]anthracene, benzo[g,h,i]perylene and indeno[1,2,3-c,d]-pyrene. The analysis
was performed using fluorescence spectroscopy after a microwave assisted liquid–liquid extraction and
solid-phase extraction on silica. The U-PLS/RBL algorithm exhibited the best performance for resolving
the heavy PAH mixture in the presence of both the highly complex oil matrix and other unpredicted
PAHs of the US-EPA list. The obtained limit of detection for the proposed method ranged from 0.07 to
2 mg kg 1. The predicted U-PLS/RBL concentrations were satisfactorily compared with those obtained
using high-performance liquid chromatography with fluorescence detection. A simple analysis with a
considerable reduction in time and solvent consumption in comparison with chromatography are the
principal advantages of the proposed method.
Feasibility of the determination of polycyclic aromatic hydrocarbons in edible oils via unfolded partial least-squares/residual bilinearization and parallel factor analysis of fluorescence excitation emission matrices