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A preparation method of a sensor for detecting organophosphorus pesticide residues

A technology of organophosphorus pesticides and sensors, which is applied in the direction of chemiluminescence/bioluminescence, and analysis by making materials undergo chemical reactions, and can solve the problem that multifunctional electrochemical and chemiluminescence analyzers are expensive and cannot meet the actual detection and detection costs. Advanced problems, to achieve the effect of reducing detection cost, simple preparation method, and simple preparation

Inactive Publication Date: 2018-09-07
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the cumbersome pre-treatment, expensive equipment, and high detection costs, these methods are difficult to popularize in the analysis and testing laboratories at the grassroots level.
There are literature reports on the detection of organophosphorus pesticides using electrochemiluminescence technology. However, the multifunctional electrochemical and chemiluminescence analyzers used in this article are expensive and cannot meet the needs of actual detection.

Method used

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  • A preparation method of a sensor for detecting organophosphorus pesticide residues
  • A preparation method of a sensor for detecting organophosphorus pesticide residues

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1. Preparation method of electrochemiluminescence sensor for detecting methyl parathion pesticide residues

[0025] (1) Design with CorelDRAW Graphics Suite X6, Adobe Photoshop CS6 or AdobeIllustrator CS6 software such as figure 1 The paper battery pattern shown includes a filling area, a salt bridge area, an electrolyte area, a battery area and a connecting wire area.

[0026] (2) Cut the filter paper into A4 size, use a solid wax printer to print the pattern designed in step (1) on the cut filter paper, and then place the printed filter paper in an oven at 90°C for heat treatment 3 min to melt the patterned wax and form a hydrophobic dam.

[0027] (3) Use a punch or laser cutting machine to drill holes in the center of the filling area, the diameter of the hole is 1 mm smaller than the diameter of the reserved hydrophilic area; drop 1.0 M NaCl solution or KCl solution in the salt bridge area; in the electrolyte 0.9 MCu(NO 3 ) 2 Solution and 0.6 M Al(NO 3 ) 3 Solutio...

Embodiment 2

[0035] Example 2. Preparation method of an electrochemiluminescence sensor for detecting residues of systemic phosphorus pesticides

[0036] The preparation steps are the same as in Example 1, the difference is:

[0037] The diameter of the filling area of ​​the paper battery described in step (1) is 5 mm; the width of the salt bridge area is 5 mm and the length is 12 mm; the diameter of the electrolyte area is 5 mm; the diameter of the battery area is 5 mm; the diameter of the connecting wire area is 5 mm.

[0038] The self-made chip holder described in step (3) includes 2 pieces, one of which has a hole in the middle, and the size of the hole is the same as the size of the hole in the filling area; the other piece of chip holder has a conductive aluminum circuit, which can be connected The current on it is drawn.

[0039] The organophosphorus pesticide in step (5) is a systemic phosphorus pesticide.

Embodiment 3

[0040] Example 3. Preparation method of electrochemiluminescence sensor for detecting malathion pesticide residues

[0041] The preparation steps are the same as in Example 1, the difference is:

[0042] The diameter of the filling area of ​​the paper battery described in step (1) is 6 mm; the width of the salt bridge area is 8 mm and the length is 16 mm; the diameter of the electrolyte area is 8.0 mm; the diameter of the battery area is 8 mm; the diameter of the connecting wire area is 8 mm.

[0043] The self-made chip holder described in step (3) includes 2 pieces, one of which has a hole in the middle, and the size of the hole is the same as the size of the hole in the filling area; the other piece of chip holder has a conductive aluminum circuit, which can be connected The current on it is drawn.

[0044] The organophosphorus pesticide in step (5) is malathion pesticide.

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Abstract

The invention discloses a preparation method of an electrochemiluminescence sensor for detecting organophosphorus pesticide residues powered by a paper battery. The preparation process of paper batteries includes designing and printing hydrophobic wax patterns, as shown in the attached figure; constructing filling area, salt bridge area, electrolyte area, battery area and connection line area; paper battery assembly. The preparation process of the electrochemiluminescent sensor for detecting organophosphorus pesticide residues includes electrode pretreatment, electrode modification and detection process. The preparation method of the sensor is simple, the paper battery is used as the power and the price is low, and it is of great significance for the detection of organophosphorus pesticide residues in agricultural by-products.

Description

Technical field [0001] The invention relates to the technical field of detection of pesticide residues, and more specifically to the preparation of an electrochemiluminescence sensor for detecting organophosphorus pesticide residues powered by paper batteries. Background technique [0002] In order to effectively prevent and control diseases, insects, weeds and other harmful organisms that cause harm to agricultural and forestry production, highly toxic organophosphorus pesticides are widely used. To a certain extent, organophosphorus pesticides have effectively treated crop plant diseases and insect pests and brought significant growth in social and economic benefits. However, while ensuring a substantial increase in crop yields, the adverse side effects of the use of organophosphorus pesticides have become increasingly prominent. After the application of organophosphorus pesticides, a part of it attaches to the surface of the plant or penetrates into the plant, contaminating f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/76
CPCG01N21/76
Inventor 张彦张丽娜李丽杨红梅葛慎光于京华颜梅
Owner UNIV OF JINAN
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