A rapid imaging method for the detection of pesticide residues

Abstract

The invention relates to a method for rapid imaging detection of pesticide residues, which relates to the technical field of detection of pesticide content. For the first time, the invention uses the pigment imaging technology to quickly detect pesticide residues, and establishes the pigment change fingerprints and polynomial models corresponding to pesticide residues, which can quickly and intuitively predict pesticide residues, and realize fast, high-sensitivity, and selective detection of trace pesticide residues online. Imaging detection.

Description

technical field [0001] The invention relates to the technical field of pesticide content detection, in particular to a method for detecting pesticide content in liquid samples using pigment imaging technology. Background technique [0002] my country is a large agricultural country. The application of pesticides is currently the most effective, convenient and economical means of preventing and controlling crop diseases and insect pests, and it plays a huge role in increasing agricultural production. The environmental problems and food safety problems caused by the large-scale use of pesticides are also becoming more and more serious. Refractory pesticides will remain in the natural environment such as soil and water for a long time, destroying the ecological environment on which human beings depend; once the pesticides are absorbed by the human body, they will Accumulation in the body, mild cases may cause poisoning symptoms, severe cases may cause major diseases such as canc...

AI Technical Summary

Problems solved by technology

The environmental problems and food safety problems caused by the large-scale use of pesticides are also becoming more and more serious. Refractory pesticides will remain in the natural environment such as soil and water for a long time, destroying the ecological environment on which human beings depend; once the pesticides are absorbed by the human body, they will Accumulation in the body, mild cases may cause poisoning symptoms, severe cases may cause major diseases such as cancer and tumors, and even death; in addition, the requirements for pesticide residues in agricultural products in import and export trade are becoming more and more stringent, and the problem of excessive pesticide residues directly causes my country's agricultural product export trade huge economic losses in

[0003] At present, the following three methods are commonly used in the detection of pesticide residues: instrumental analysis, including gas chromatography, gas chromatography-mass spectrometry, liquid chromatography-mass spectrometry, high performance liquid chromatography, Raman spectroscopy, thin-layer Chromatography, etc. Although these methods have the advantages of accurate quantification and high sensitivity, they are mostly large-scale instruments with a long detection cycle, which is not suitable for on-site detection and screening of large batches of samples, and is difficult to meet the prevention and control of emergencies; the enzyme inhibition method can Realize rapid real-time monitoring, but it is expensive and cannot be reused, and the reproducibility and accuracy are poor; although the immunoassay method has high selectivity, it is difficult to screen for specific binding substrates, and the detection effect largely depends on the substrate Correct selection, but not conducive to the detection of pesticide residues in large batches of samples

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