Pesticide residue detection method and system

A pesticide residue detection and pesticide residue technology, applied in measurement devices, instruments, material analysis by optical means, etc., can solve the problems of specificity of antibodies only applicable, unfavorable on-site testing and detection, large antibody preparation, etc. Achieve the effect of improving detection accuracy, fast detection speed and small size

Inactive Publication Date: 2020-04-14
赵莉莉
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Problems solved by technology

[0003] Traditional pesticide residue detection methods include: using ethylenecholinease spectrophotometry, it takes about a few hours to two days from sampling, sample processing to analysis to obtain the results, which is not conducive to on-site testing and detection, in vivo detection method, using living organisms Sensitive reactions to pesticide residues are determined by observing the death rate to determine the concentration of pesticide residues. This method has low detection accuracy and a narrow scope of application to pesticides; immunoassay is an ultramicro analysis method that combines antibody antigen reaction with modern testing methods. Its development process requires a lot of investment, a long time, the antibody preparation is difficult, and the antibody is specific and only suitable for the detection and analysis of a single pesticide residue concentration.

Method used

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  • Pesticide residue detection method and system
  • Pesticide residue detection method and system
  • Pesticide residue detection method and system

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Effect test

Embodiment 1

[0056] Such as figure 1 As shown, the application provides a method for detecting pesticide residues, the method comprising the steps of:

[0057] Step S1, extracting the sample solution to be detected.

[0058] According to a specific embodiment of the present invention, the method for extracting the sample solution to be detected is as follows:

[0059] Step S110, finely crushing the sample to be tested.

[0060] In step S120, the sample to be detected is dissolved in an extraction solvent. The extraction solvent may be a mixed solvent of acetone and methanol, and the mass fraction of acetone and methanol is the same. Extraction solvent, acetone solvent can dissolve most pesticides, and methanol solvent has higher extraction efficiency.

[0061] Step S130, filtering out impurities in the dissolved solution.

[0062] According to a specific embodiment of the present invention, the dissolved solution is sent into a filter extraction tube; the extraction tube includes a filte...

Embodiment 2

[0109] Such as image 3 As shown, the application provides a pesticide residue detection system 100, which includes:

[0110] The extracting unit 10 is used to extract the sample solution to be tested.

[0111] The extraction unit 10 includes a crushing treatment device for finely crushing the test sample; an extraction tube for holding the extraction solvent, and the sample to be tested is put into the extraction tube, the sample to be tested is mixed with the extraction solvent, and the pesticide is dissolved in the extraction tube. In the solvent, the middle layer of the extraction tube is provided with a filter layer. The filter layer filters out the impurities in the solution mixed with the sample to be tested and the extraction solvent. Outflow; concentrating device for concentrating the extracted supernatant.

[0112] The pesticide residue detection device 20 is used to detect the sample solution to be detected.

[0113] The first image acquisition device 30 is used ...

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Abstract

The application provides a pesticide residue detection method and system. The method comprises the following steps: extracting a to-be-detected sample solution; detecting the to-be-detected sample solution by using a pesticide residue detection device, and collecting a standard color development image being a color development image of a sample solution without pesticide residues and a pesticide residue color development image being a color development image of the to-be-detected sample solution of the pesticide residue detection device; calculating a pesticide residue rate according to the standard color development image and the pesticide residue color development image; and inputting the pesticide residue rate into a pre-constructed pesticide residue rate and pesticide residue concentration relation model to obtain the pesticide residue concentration. The method has the advantages of being high in detection speed, suitable for field detection, high in detection accuracy, easy to operate, convenient to carry, low in investment cost and the like.

Description

technical field [0001] The present application relates to the technical field of pesticide residue detection, in particular to a pesticide residue detection method and system. Background technique [0002] At present, the environmental pollution caused by the extensive use of pesticides and the toxicity problems caused by pesticide residues in the mouth have attracted great attention from many countries. In order to protect the ecological environment and safeguard human health, many countries have strictly stipulated the limits of various pesticide residues in the environment and food. The analytical techniques and methods of pesticide residues are also highly valued. [0003] Traditional pesticide residue detection methods include: using ethylenecholinease spectrophotometry, it takes about a few hours to two days from sampling, sample processing to analysis to obtain the results, which is not conducive to on-site testing and detection, in vivo detection method, using livin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78G01N21/01
CPCG01N21/78G01N21/01
Inventor 赵莉莉
Owner 赵莉莉
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