A kind of detection method of methyl parathion

A technology of methyl parathion and detection method, which is applied in the field of food safety detection, can solve the problems of high detection cost, long processing time, poor stability, etc., and achieve the effects of high detection sensitivity, wide application and good stability
CN107941769BActive Publication Date: 2020-06-02CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2020-06-02

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Abstract

The invention discloses a parathion-methyl detection method which comprises the following steps: preparing a n-doped carbon quantum dot (N-CDs) by using a hydrothermal method; decomposing parathion-methyl under an alkali condition to generate paranitrophenol; mixing the prepared N-CDs with a hydrolysis product, namely the paranitrophenol; and enabling the paranitrophenol to absorb fluorescence ofthe N-CDs to quench the fluorescence of the N-CDs, and detecting the concentration of the parathion-methyl according to fluorescence intensity. In the method, sample pretreatment is avoided, large-size instrument or enzyme is not needed, the detection method is simple to operate, high in detection specificity, free of interference of other common pesticides, high in detection sensitivity, low in detection limit, high in stability and wide in application, and can be applied to detection on parathion-methyl in fruits, vegetables, river samples, and the like, and the cost can be greatly reduced.The method has good application prospects and potential application values in the fields of detection and analysis.
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Description

technical field

[0001] The invention relates to the technical field of food safety detection, in particular to a method for detecting methyl parathion. Background technique

[0002] Organophosphorus pesticides have the advantages of high efficacy, less dosage, many control objects, and easy decomposition in nature, so they are widely used in agricultural production in our country. Among them, methyl parathion (MP), as a broad-spectrum and high-efficiency organophosphorus insecticide and acaricide, has been widely used worldwide for pest control of agricultural crops such as grain and cotton. However, methyl parathion is highly toxic to humans and animals, and can enter the animal body through the esophagus, respiratory tract and skin to cause poisoning. Although its production and use have been banned in my country at present, reports of methyl parathion poisoning incidents have occurred from time to time. Therefore, it is of great significance to realize the simple, rapid ...

Claims

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