RT info:eu-repo/semantics/article
T1 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
A1 Herrero Gutiérrez, Ana
A1 Ortiz Fernández, Mª Cruz
A1 Sarabia Peinador, Luis Antonio
K1 Chemistry
K1 Mathematics
K1 Química
K1 Matemáticas
AB 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.
PB Elsevier
YR 2013
FD 2013-05
LK http://hdl.handle.net/10259/4285
UL http://hdl.handle.net/10259/4285
LA eng
NO projectsof Ministerio de Economía y Competitividad (CTQ2011-26022) andJunta de Castilla y León (BU108A11-2).
DS Repositorio Institucional de la Universidad de Burgos
RD 26-abr-2024