Chemiluminescent organophosphorus pesticide residual analyzer and detecting method thereof

A technology of organophosphorus pesticides and chemiluminescence, which is applied in the fields of chemiluminescence/bioluminescence, analysis through chemical reactions of materials, and material analysis through optical means, which can solve the problems of reduced activity, short shelf life of medicine boxes, and low sensitivity And other issues

Inactive Publication Date: 2005-09-07
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another problem is that no matter what method is used to obtain the esterase (pure enzyme preparation, bovine or pig liver, human or animal plasma, head of housefly or other adult worms, etc.), the activity decreases with the storage time, making the shelf life of the relevant kits difficult. relatively short
Another problem is that these methods use visual colorimetry or spectrophotometry, and the sensitivity is relatively low.

Method used

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  • Chemiluminescent organophosphorus pesticide residual analyzer and detecting method thereof
  • Chemiluminescent organophosphorus pesticide residual analyzer and detecting method thereof
  • Chemiluminescent organophosphorus pesticide residual analyzer and detecting method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] In Figs. 1-5, the chemiluminescent organophosphorus pesticide residue analyzer of this embodiment consists of an analyzer housing 1-1, a cassette 1-2, a chemiluminescence reaction pool 1-3, a waste liquid pipe 1-4, and a left side wriggle Pump 1-4, right peristaltic pump 1-5, start button 1-6, left peristaltic pump speed adjustment button 1-7, right peristaltic pump speed adjustment button 1-8, photomultiplier tube voltage adjustment button 1-9, LCD display 1-10, waste liquid pipe 1-11, mounting plate 1-12, photomultiplier tube 1-13, single-chip computer system 1-14, injection valve 1-15, three-way valve 1-16, photolyzer housing 2-1, intake fan 2-2, quartz spiral coil 2-3, ultraviolet light tube 2-4, exhaust fan 2-5, rectifier 2-6 are connected to form. Among them, the analyzer shell 1-1, cassette 1-2, chemiluminescent reaction pool 1-3, waste liquid pipe 1-4, left peristaltic pump 1-4, right peristaltic pump 1-5, start button 1-6, left Peristaltic pump speed adjustmen...

Embodiment 2

[0085] In this embodiment, the chemiluminescence reaction pool 1-3 is a transparent plate-shaped body made of plexiglass, and a curved liquid flow channel is made in the transparent plate-shaped body, and the inner diameter of the liquid flow channel is 0.8 mm. Other components and the coupling relationship of the components are the same as in Embodiment 1.

Embodiment 3

[0087] In this embodiment, the chemiluminescence reaction pool 1-3 is a transparent plate made of plexiglass, and a curved liquid flow channel is made in the transparent plate, and the inner diameter of the liquid flow channel is 1.2mm. Other components and the coupling relationship of the components are the same as in Embodiment 1.

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PUM

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Abstract

The invention relates to a device and method for measuring the organophosphorus pesticide residues by chemiluminescence, which comprises an analyzer and a photolysis device connected with each other through conduits. The method dissociates the organophosphorus pesticide residues on the vegetables or fruits to phosphates by the potassium peroxodisulfate catalyzed with the titania nanometer particle and ultraviolet light. The phosphates and molybdates and vanadates form phosphomolybdic vanadium acid, which oxygenizes the luminol liquor and causes chemiluminescence, then definites quantity according to the intensity and measures the total quantity of residues. The measuring linear range is 1.0x10-9-1.0x10-5g / ml, detection limit is 8.0x10-10g / ml, relative standard deviation is 4.8%.

Description

technical field [0001] The invention belongs to the technical field of testing or analyzing materials by means of determining their chemical or physical properties, and in particular relates to a device in which materials are subjected to chemical reactions, and a chemiluminescent reaction to test the progress of the reaction or the result. Background technique [0002] In recent years, in the production and use of pesticides at home and abroad, organophosphorus pesticides account for a large proportion. Because of their wide applicability, good character, low cost and low resistance to various insects, etc., Make it have a better market. However, organophosphorus pesticides are highly toxic pesticides, which are highly toxic to mammals. They often contaminate food due to careless use, storage, and transportation, causing acute poisoning to humans. Organophosphorus pesticides account for more than 75% of the total pesticide production in my country. Most of the pesticide po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/01G01N21/76
Inventor 章竹君李保新王娟田穗康
Owner SHAANXI NORMAL UNIV
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