Method for detecting pesticide residue through fast imaging

Abstract

The invention provides a method for detecting pesticide residue through fast imaging, and relates to the technical field of pesticide content detection. The method has the advantages that a pigment imaging technology is used for fast detecting the pesticide residue for the first time; a polynomial model and a pigment change fingerprint atlas corresponding to the pesticide residue are built; the pesticide residue can be fast and directly predicted; the on-line fast high-sensitivity high-selectivity imaging detection on trace pesticide residue can be realized.

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

Images