Website-Security by IONOS.

Determination of pesticides in edible oils by liquidchromatography-tandem mass spectrometry employing newgeneration materials for dispersive solid phase extraction clean-up.

Jonatan V. Diasa, Victor Cutillasb, Ana Lozanob, Ionara R. Pizzuttia,Amadeo R. Fernández-Albab

aFederal University of Santa Maria (UFSM), Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), 97105-900,Santa Maria, RS, Brazil

bEuropean Union Reference Laboratory for Pesticide Residues in Fruit & Vegetables (EURL-FV), University of Almeria, Agrifood Campus of InternationalExcellence (ceiA3), Almeria, Spain

Journal of Chromatography A, 1462 (2016) 8–18



The goal of this work was to evaluate the efficiency of several sorbents on removal fats from edible oils(olive, soya and sunflower) during the clean-up step for posterior determination of 165 pesticides byUHPLC-QqQ-MS/MS system. The extraction procedure employed in this work was the citrate version ofQuEChERS method followed by a step of freezing out with dry ice and clean-up evaluation using i) PSAwith magnesium sulfate (d-SPE); ii) magnesium sulfate and Z-sep sorbent (d-SPE); iii) Z-sep (columnSPE) and iv) Agilent Bond Elut QuEChERS Enhanced Matrix Removal-Lipid (EMR-Lipid). After evaluationof the recovery results at 10, 20 and 50 g kg−1, the EMR-Lipid showed important advantages comparingto the other sorbents evaluated, such as better recovery rates and RSD%. The method was validated atthe three concentrations described above. Analytical curves linearity was evaluated by spiking blank oilsamples at 10, 20, 50, 100 and 500 g kg−1. The method demonstrated good recoveries values betweenthe acceptable range of 70–120% and RSD% < 20 for most of evaluated pesticides. In order to evaluate theperformance of the method, this same procedure was employed to other oils such as soya and sunflowerwith very good results.

© 2016 Elsevier B.V. All rights reserved.


If you want to obtain the full text document, please contact with us:

Carmen Ferrer: cferrer@ual.es (+34) 950 014 102

Octavio Malato: omalato@ual.es (+34) 950 214 423


Published 05-12-2016, 10:47:15

Share: Facebook. Twitter. LinkedIn. Share it via Email.

Top of Page