High-specificity selectivity method and device for rapidly detecting glyphosate and 2, 4-D propionic acid pesticides through solvent regulation and control

By preparing the fluorescent probe L-3 to detect glyphosate and 2,4-D propionic acid in pure methanol solvent, the problems of low sensitivity and insufficient applicability of existing technologies for detecting glyphosate and 2,4-D propionic acid pesticides are solved, achieving rapid, sensitive, highly specific and selective detection, suitable for complex sample matrices.

CN122063095APending Publication Date: 2026-05-19HAINAN UNIV
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Patent Information

Application Number
CN202610437879.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-03
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing technologies are insufficient for the rapid, sensitive, and efficient detection of glyphosate and 2,4-D propionic acid pesticides, and their applicability is limited, especially in complex environmental matrices, failing to meet the real-time monitoring needs in agricultural production and food safety.

Method used

The detection was performed using a fluorescent probe in pure methanol solvent. By preparing the fluorescent probe L-3, and using colorimetric detection and fluorescent test paper, glyphosate and 2,4-D propionic acid were detected with high specificity and selectivity. The detection process was simple, rapid and sensitive.

Benefits of technology

It broadens the application range of the probe, significantly reduces detection costs and time, achieves high selectivity for glyphosate and 2,4-D propionic acid, adapts to complex sample matrices, and meets the needs of rapid on-site detection.

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Abstract

The invention discloses a solvent-controllable high-specific selectivity method and device for rapidly detecting glyphosate and 2, 4-propanoic acid pesticides, a fluorescent probe is adopted for detection, aniline and p-hydroxybenzaldehyde are weighed and jointly dissolved in glacial acetic acid for reaction, and then ammonium acetate and biphenyl formyl are added until raw materials are completely converted; mixing the L-1 with urotropine according to a molar ratio, dissolving the mixture in trifluoroacetic acid, then adding an iced sodium bicarbonate solution, and performing post-treatment and purification to obtain yellow green granular powder L-2; the preparation method comprises the following steps: dissolving L-2 and 2-hydrazinopyrazine in ultra-dry ethanol, carrying out a reflux reaction at 95 DEG C overnight, concentrating a reaction solution through a rotary evaporator, and finally carrying out suction filtration and drying to obtain an orange-yellow solid product L-3, namely the fluorescent probe. The probe is specially used for detecting glyphosate and 2, 4-D propionic acid, shows high-selectivity response to glyphosate in a pure methanol solvent, is rapid in detection process and high in sensitivity, not only widens the application range of the probe, but also highlights the adaptability of the probe in an actual sample.
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