2026-04-14T06:11:33Zhttps://recercat.cat/oai/requestoai:recercat.cat:20.500.12327/27792025-10-22T11:13:51Zcom_2072_4428com_2072_4427col_2072_487898
RECERCAT
author
Bellot, Marina
author
Teixidó, Anna
author
Torrell, Antoni
author
Aletà, Neus
author
Gómez-Canela, Cristian
other
Producció Vegetal
group
Fructicultura
2025-10-22T11:13:51Z
2025-10-22T11:13:51Z
2023-12-12
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.
1420-3049
http://hdl.handle.net/20.500.12327/2779
https://doi.org/10.3390/molecules28248050
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
eng
Attribution 4.0 International
Residues of Deltamethrin in Pine Needles and Pine Nuts of Catalonia (Spain)
info:eu-repo/semantics/article