Device for detecting methyl parathion pesticide residue through electrochemiluminescence

Abstract

The invention relates to a device for detecting methyl parathion pesticide residue through electrochemiluminescence, and belongs to the field of analysis and detection. Researching and developing a methyl parathion pesticide residue detection technique which is highly sensitive, quick, efficient and easy to operate is an important focus of attention in the field of pesticide residue analysis. Highlighting the focus, the device provided by the invention is a three-electrode electrochemiluminescence detection device, wherein the base solution in an electrolytic bath in the device is Luminol / KCl solution; the working electrode is a glassy carbon electrode; and nano zirconium oxide is modified on the working face of the glassy carbon electrode. The working electrode of the device has special sensitivity to the pesticide methyl parathion, so that the device can sensitively and quickly detect the methyl parathion pesticide residue.

Description

technical field [0001] The invention relates to an electrochemiluminescence detection device for methyl parathion pesticide residue, belonging to the field of analysis and testing. This case is based on the fact that nano-zirconia has strong adsorption properties for phosphorus-containing groups, which can enhance its electrochemiluminescent signal in luminol solution. A chemiluminescence sensor for rapid detection of methyl parathion pesticide residues. Background technique [0002] Pesticide residues (Pesticide residues) is the phenomenon that a part of pesticides directly or indirectly remain in grains, vegetables, fruits, livestock products, aquatic products, soil and water after the application of pesticides in agricultural production. Pesticide residues are produced with the mass production and widespread use of pesticides. Pesticides enter food, vegetables, fruits, fish, shrimp, meat, eggs, and milk, causing food pollution. Long-term consumption of agricultural and s...

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Problems solved by technology

[0007] At present, although there are reports on the enrichment of organophosphorus pesticides on the surface of modified electrodes by nano-zirconia modified electrodes, the traditional electrochemical methods have been reported, but the detection sensitivity is not high, and the detection range is also very narrow, electrochemiluminescence Its high sensitivity and wide linear range have been reported in a large number of literatures, and the electrochemiluminescence analysis method is generally 2 to 3 orders of magnitude higher than the traditional electrochemical analysis method; however, for methyl parathion pesticide The detection of residual electrochemiluminescence, especially the detection of methyl parathion pesticide residues by enhancing the electrochemiluminescence of luminol, has not been reported yet.

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