2026-06-19T12:25:56Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/42852022-04-29T12:02:48Zcom_10259_4249com_10259_5086com_10259_2604col_10259_4250
Repositorio Institucional de la Universidad de Burgos
author
Herrero Gutiérrez, Ana
author
Ortiz Fernández, Mª Cruz
author
Sarabia Peinador, Luis Antonio
2016-11-24T09:57:30Z
2016-11-24T09:57:30Z
2013-05
http://hdl.handle.net/10259/4285
The determination of triazines in oranges using a GC–MS system coupled to a programmed temperature vaporizer (PTV) inlet in the context of legislation is performed. Both pretreatment (using a Quick Easy Cheap Effective Rugged and Safe (QuEChERS) procedure) and injection steps are optimized using D-optimal experimental designs for reducing the experimental effort. The relative dirty extracts obtained and the elution time shifts make it necessary to use a PARAFAC2 decomposition to solve these two usual problems in the chromatographic determinations. The “second-order advantage” of the PARAFAC2 decomposition allows unequivocal identification according to document SANCO/12495/2011 (taking into account the tolerances for relative retention time and the relative abundance for the diagnostic ions), avoiding false negatives even in the presence of unknown co-eluents. The detection limits (CCα) found, from 0.51 to 1.05 μg kg−1, are far below the maximum residue levels (MRLs) established by the European Union for simazine, atrazine, terbuthylazine, ametryn, simetryn, prometryn and terbutryn in oranges. No MRL violations were found in the commercial oranges analyzed.
eng
Attribution-NonCommercial-NoDerivatives 4.0 International
D-optimal experimental design coupled with parallel factor analysis 2 decomposition a useful tool in the determination of triazines in oranges by programmed temperature vaporization–gas chromatography–mass spectrometry when using dispersive-solid phase extraction
info:eu-repo/semantics/article
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https://riubu.ubu.es/bitstream/10259/4285/1/Herrero-JCA_2013.pdf
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https://riubu.ubu.es/bitstream/10259/4285/6/Herrero-JCA_2013.pdf.txt
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Herrero-JCA_2013.pdf.txt