Key Laboratory of Agro-Products Quality and Safety of Xinjiang, Institute of Agricultural Quality Standards and Testing
Technology, Xinjiang Academy of Agricultural Sciences, Xinjiang, 830091, China
2
Jiepin Planting Farmers’Professional Cooperative, Maigaiti, Kashgar Prefecture 844600, China
Submission date: 2024-10-16
Final revision date: 2025-01-15
Acceptance date: 2025-02-22
Online publication date: 2025-04-16
Corresponding author
Jianqing Shi
Jiepin Planting Farmers’Professional Cooperative, Maigaiti, Kashgar Prefecture 844600, China
Shenghong Liu
Key Laboratory of Agro-Products Quality and Safety of Xinjiang, Institute of Agricultural Quality Standards and Testing
Technology, Xinjiang Academy of Agricultural Sciences, Xinjiang, 830091, China;
Molecularly imprinted polymers (MIPs) that had high selectivity for five pyrethroid pesticides
with high detection and exceedance rates were synthesized through precipitation polymerization
using ethyl chrysanthemate and phenyl ether-biphenyl eutectic mixture as double template molecules,
acrylamide as a functional monomer, ethylene glycol dimethacrylate as a crosslinking agent,
and acetonitrile as a porogen. The imprinted polymers prepared were then characterized and evaluated
through scanning electron microscopy (SEM) and an equilibrium adsorption experiment. The results
showed that the MIPs had specific adsorption capacities for five pyrethroid pesticides. A solidphase
extraction column was prepared using the synthesized polymers as the adsorption material,
and a molecularly imprinted solid-phase extraction-gas chromatography equipped with an electron
capture detector (MI-SPE-GC-ECD) method was confirmed for the determination of five pyrethroid
pesticide residues in agricultural products. A good linear relationship was present between the peak
area and the concentration of pyrethroid insecticides within the range of 2-100 μg/kg. The correlation
coefficient (R2) was greater than 0.9930, and the minimum limits of detection and quantification were
15.5-25.8 and 54.3-88.1 ng/L, respectively. Under different levels of additives, the standard recovery
of pyrethroid pesticides in the samples varied from 72.8% to 110.2%, and the relative standard deviation
(RSD) was less than 5.5%. In conclusion, this method enables the rapid separation and efficient
enrichment of multiple pyrethroid pesticides in agricultural products in a single step.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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