Solid bactericide pesticide classification method

A classification method and technology for fungicides, applied in the directions of fungicides, biocides, biocides, etc., can solve problems such as difficulty in classifying pesticides, and achieve the effects of simple pretreatment of drugs, few calculation steps, and easy operation.

Inactive Publication Date: 2011-12-21
CHINA JILIANG UNIV
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Problems solved by technology

However, with the development of science and technology, the continuous introduction of new pesticides to the market has caused difficulties in the classification of pesticides, which are difficult to distinguish only by vision and smell. Therefore, a fast and effective classification method is of great significance

Method used

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  • Solid bactericide pesticide classification method
  • Solid bactericide pesticide classification method
  • Solid bactericide pesticide classification method

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Experimental program
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Embodiment

[0041] The steps of the method for identifying and classifying fungicide solid pesticides are as follows:

[0042] 1) Dry ferbam fungicides, thiophanate-methyl fungicides, thiabendazole fungicides, captan fungicides and polyethylene powder with a purity greater than 98% in a drying oven, grind them in a mortar, and then Mix the four kinds of fungicide raw materials with polyethylene at a ratio of 1:1, and use a tablet machine to press under a pressure of 30MPa to form a fungicide sample with a thickness of 1.3mm. The mass of the fungicide sample is 200mg, and the diameter is 13mm;

[0043] 2) In a nitrogen environment with a humidity less than 4%, use the terahertz time-domain spectroscopy system to detect the empty sample holder, obtain the time-domain waveform, and use it as a reference signal to repeat the detection of ten groups;

[0044]3) In a nitrogen environment with a humidity less than 4%, use the terahertz time-domain spectroscopy system to detect the sample holder ...

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Abstract

The invention discloses a solid bactericide pesticide classification method. The method comprises the following steps of: 1) detecting raw solid bactericide agents with purity of more than 98 percent by using a terahertz time domain system, acquiring time domain signals of samples, and calculating absorption spectrums, wherein the raw bactericide agents comprise ferbam, thiophanatemethyl, probenazole and captan; 2) analyzing the absorption spectrums of the samples by using a main component analysis method, and extracting features for classifying the spectrums of the samples; and 3) identifying the terahertz spectrums of the bactericide samples by using a radial basis function neural network. The terahertz time domain spectrum technology-based bactericide classification method is simple and quick in the whole experiment process and high in identification accuracy, is suitable for classification of various solid bactericide pesticides, and has certain market application prospect.

Description

technical field [0001] The invention relates to a method for classifying pesticides, in particular to a method for classifying fungicide solid pesticides. Background technique [0002] With the development of modern agriculture, a large number of pesticides have been applied to agricultural production, and the application of pesticides has played an important role in the control of crop diseases and insect pests and the improvement of crop yield. However, with the development of science and technology, new pesticides are constantly being introduced to the market, which makes it difficult to classify pesticides, which are difficult to distinguish only by vision and smell. Therefore, a fast and effective classification method is of great significance. [0003] Terahertz spectroscopy has developed rapidly in recent years and is widely used in research fields such as food safety and dangerous goods detection. Terahertz spectroscopy has advantages that other spectra do not have....

Claims

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Application Information

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IPC IPC(8): A01N55/02A01N43/78A01N47/34A01N47/04A01N25/34A01P3/00
Inventor 王强马冶浩王孝伟王花丽
Owner CHINA JILIANG UNIV
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