PMID- 35339080 OWN - NLM STAT- MEDLINE DCOM- 20220504 LR - 20220504 IS - 1873-7072 (Electronic) IS - 0308-8146 (Linking) VI - 386 DP - 2022 Aug 30 TI - QuEChERS-based analytical methods developed for LC-MS/MS multiresidue determination of pesticides in representative crop fatty matrices: Olives and sunflower seeds. PG - 132558 LID - S0308-8146(22)00520-9 [pii] LID - 10.1016/j.foodchem.2022.132558 [doi] AB - Oilseed crops are greatly extended all over the world. Their high fat content can interfere during pesticide multiresidue analysis through liquid chromatography-tandem mass spectrometry (LC-MS/MS). This work aimed at overcoming this issue by developing and validating two QuEChERS-based methods for LC-MS/MS determination of 42 pesticides in two fatty food matrices: olives and sunflower seeds. Optimization of the extraction method was achieved following a 2(6-2) fractional factorial design in a highly cost-effective way. Validation of the multi-residue methods demonstrated improved limits of detection, below the established maximum residue levels (MRLs) for almost all compounds, good precision, and trueness, in compliance with SANTE guidelines. Application of these methods to the analysis of real samples from the Iberian Peninsula showed the presence of some pesticides of relevant environmental concern, including four compounds contained in the Pesticide Action Network International list of highly hazardous pesticides, found at levels between 0.03 ng/g and 104 ng/g. CI - Copyright (c) 2022 The Authors. Published by Elsevier Ltd.. All rights reserved. FAU - Garcia-Vara, Manuel AU - Garcia-Vara M AD - Water, Environmental and Food Chemistry Unit (ENFOCHEM), Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C/ Jordi Girona 18-26, 08034 Barcelona, Spain. FAU - Postigo, Cristina AU - Postigo C AD - Water, Environmental and Food Chemistry Unit (ENFOCHEM), Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C/ Jordi Girona 18-26, 08034 Barcelona, Spain. FAU - Palma, Patricia AU - Palma P AD - Department of Technologies and Applied Sciences, Polytechnic Institute of Beja, Portugal; Institute of Earth Sciences, University of Evora, Evora, Portugal. FAU - Bleda, Maria Jose AU - Bleda MJ AD - Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, E-08034 Barcelona, Spain. FAU - Lopez de Alda, Miren AU - Lopez de Alda M AD - Water, Environmental and Food Chemistry Unit (ENFOCHEM), Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C/ Jordi Girona 18-26, 08034 Barcelona, Spain. Electronic address: miren.lopezdealda@idaea.csic.es. LA - eng PT - Journal Article DEP - 20220225 PL - England TA - Food Chem JT - Food chemistry JID - 7702639 RN - 0 (Pesticide Residues) RN - 0 (Pesticides) SB - IM MH - Chromatography, Liquid/methods MH - *Helianthus MH - *Olea/chemistry MH - *Pesticide Residues/analysis MH - *Pesticides/analysis MH - Seeds/chemistry MH - Solid Phase Extraction MH - Tandem Mass Spectrometry/methods OTO - NOTNLM OT - Agrochemicals OT - Herbicides OT - Insecticides OT - Liquid chromatography-tandem mass spectrometry OT - Pesticide residue analysis OT - Sample pre-treatment EDAT- 2022/03/27 06:00 MHDA- 2022/05/06 06:00 CRDT- 2022/03/26 20:12 PHST- 2021/08/19 00:00 [received] PHST- 2022/02/23 00:00 [revised] PHST- 2022/02/23 00:00 [accepted] PHST- 2022/03/27 06:00 [pubmed] PHST- 2022/05/06 06:00 [medline] PHST- 2022/03/26 20:12 [entrez] AID - S0308-8146(22)00520-9 [pii] AID - 10.1016/j.foodchem.2022.132558 [doi] PST - ppublish SO - Food Chem. 2022 Aug 30;386:132558. doi: 10.1016/j.foodchem.2022.132558. Epub 2022 Feb 25.