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A Simple Electrochemiluminescence Detection Method for Glyphosate Pesticide

A technology of luminescence detection and electrochemistry, which is applied in the direction of chemiluminescence/bioluminescence, electrochemical variables of materials, and analysis through chemical reactions of materials, etc., can solve the problem of high requirements for experimental operators, affecting the sensitivity of instruments, and cumbersome operation process and other problems, to achieve the effect of good selectivity, low material price and simple operation

Inactive Publication Date: 2020-01-21
UNIV OF JINAN
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Problems solved by technology

However, whether it is high performance liquid chromatography or mass spectrometer, the operation process is cumbersome, the equipment is expensive, and the requirements for experimental operators are high, and it is easy to cause pollution to the mass spectrometer during the sample injection process, which affects the sensitivity of the instrument.

Method used

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  • A Simple Electrochemiluminescence Detection Method for Glyphosate Pesticide

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Embodiment 1

[0017] Example 1 A simple electrochemiluminescent detection method for glyphosate pesticides

[0018] 1. g-C 3 N 4 Preparation: Weigh 10 g of urea with an electronic balance, put it in a crucible, put it into a muffle furnace, raise the temperature to 550 °C at a rate of 5 °C / min, and dry at a constant temperature for 2.5 h to obtain light yellow g-C 3 N 4 . Take the prepared g-C 3 N 4 100 mg in a Erlenmeyer flask, add 100 mL ultrapure water, sonicate for 16 h, and centrifuge the resulting solution at 6000 r / s to remove undispersed g-C 3 N 4 , take the supernatant, and spin evaporate at 60°C to obtain a milky white suspension;

[0019] 2. Ag + / g -C 3 N 4 / GCE electrode preparation: Al with 1.0 μm, 0.3 μm, 0.05 μm 2 o 3 The glassy carbon electrode (GCE) with a diameter of 4 mm was polished successively with polishing powder, ultrasonically cleaned in ethanol and ultrapure water for 3 min, and dried with nitrogen; pipette 5 μL of 1 mg / mL g-C 3 N 4 drop on a clean ...

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Abstract

The invention belongs to the field of pesticide detection, and discloses a simple electrochemiluminescence detection method of glyphosate pesticide, and especially relates to preparation and applications of a carbon nitride-based glyphosate electrochemiluminescence sensor. According to a preparation method, graphene carbon nitride (g-C3N4) is used for modifying glassy carbon electrode loaded with Ag<+> on the surface; Ag<+> is released from the g-C3N4 modified electrode surface under the complexing action of glyphosate in a solution with Ag<+> on the surface of the electrode, recovery of electroluminescent signals is realized, and detection of glyphosate is realized via detecting the electroluminescent signals.

Description

technical field [0001] The invention relates to the technical field of pesticide residue detection, in particular to the construction and application of a simple electrochemiluminescence sensor capable of detecting glyphosate pesticides. Background technique [0002] Glyphosate (PMG) is a broad-spectrum herbicide with epoch-making significance in world agriculture. Glyphosate is widely used in the control of various weeds in farmland, and can also be used in the control of weeds in non-farmland, such as gardens, nurseries, railways, roads, forests, lakes, etc. Glyphosate has become the most widely used pesticide variety in the world, and its sales value has always ranked first among pesticides. Nowadays, the use of glyphosate is increasing and the scope of use is becoming wider and wider. Especially in recent years, the large-scale planting of glyphosate-resistant transgenic crops around the world has provided a broad application market and development for the development o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/26G01N21/76
CPCG01N21/76G01N27/26
Inventor 陈培培周长利王超
Owner UNIV OF JINAN
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