Residues of Deltamethrin in Pine Needles and Pine Nuts of Catalonia (Spain)
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Publication date
2023-12-12ISSN
1420-3049
Abstract
In recent years, recurrent droughts have weakened stone pine (Pinus pinea) forests and facilitated the emergence of harmful pests and diseases, including the Leptoglossus occidentalis. The production of stone pine nuts has declined over the past five years. To control this hemipteran pest, a synthetic pyrethroid insecticide called deltamethrin is being tested. However, it is necessary to estimate the residue left by these treatments in forest stands. Therefore, a fast and robust analytical procedure was developed based on QuEChERS clean-up extraction, followed by gas chromatography coupled with an electron capture detector. This optimized method can detect residual concentrations of deltamethrin in pine nuts and pine needles up to 0.1 and 6 μg kg−1, respectively, with a limit of quantification of 0.4 and 20 μg kg−1. Great recoveries (between 84 and 102%) were obtained for both matrices, and no matrix effect was observed. The results showed that two weeks after spraying, the deltamethrin content in the needles of stone pines decreased by up to 75%, and after nine months, its presence was like that of nontreated trees.
Keywords: pine needle; nut; deltamethrin; gas chromatography
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
630 - Forestry
Pages
11
Publisher
MDPI
Is part of
Molecules
Citation
Bellot, Marina, Anna Teixidó, Antoni Torrell, Neus Aletà, and Cristian Gómez-Canela. 2023. “Residues of Deltamethrin in Pine Needles and Pine Nuts of Catalonia (Spain).” Molecules 28(24). doi:10.3390/molecules28248050.
Grant agreement number
MICINN/Programa Estatal de generación del conocimiento y fortalecimiento científico y tecnológico del sistema I+D+I y Programa Estatal de I+D+I orientada a los retos de la sociedad/PID2020-113371RA-C22/ES/ /
MICIU/Programa Estatal de generación del conocimiento y fortalecimiento científico y tecnológico del sistema I+D+I/PID2019-107483GB-100/ES/La gestión frutal: una vía sostenible para la producción de piñón de P. pinea L./MASPINENUT
MICINN/ / /ES/Mejora e Innovación en la Producción del piñón nacional/GOPinea
FEADER/ / /EU/ /
Program
Fructicultura
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2805]
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by/4.0/