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Method for electrochemical detection of acephate by aid of molecularly imprinted polymer film supported on surface of metal-organic framework material

A metal-organic framework and acephate technology, applied in the direction of material electrochemical variables, can solve the problems of poor selectivity and complex composition, and achieve the effects of fast mass transfer, simple experimental operation, and easy control of reaction conditions

Inactive Publication Date: 2016-12-07
UNIV OF JINAN
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AI Technical Summary

Problems solved by technology

The selectivity of chemiluminescence detection is poor, and most of the analyzed samples have complex components, so chemiluminescence technology is usually combined with separation technology to achieve the desired effect

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0027] Embodiment 1: For the detection of acephate in environmental water samples

[0028] (1) Preparation of metal-organic framework material Cu(BPDA): Take 1.2 g copper nitrate, 1 g 4,4'-biphenyl dicarboxylic acid, dissolve in 10 mL twice distilled water, 10 mL N,N-dimethylformamide and 10 mL methanol mixture; mix thoroughly and place in a 50 mL polytetrafluoroethylene-lined reactor liner, and react at 130 °C for 24 h to obtain a rod-shaped solid, which is then washed with N,N-dimethylformamide and After washing with twice distilled water for 3 times, and drying at 70 °C for 2 h, the metal-organic framework material Cu(BPDA) was obtained.

[0029] (2) Acephate molecularly imprinted polymer film was prepared using metal organic framework material as support and methacrylic acid as functional monomer. First, add 0.05 g of metal-organic framework material Cu(BPDA) and 10 mL of acetonitrile into a 100 mL round-bottomed flask, add 0.386 g of acephate and stir to dissolve complet...

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Abstract

The invention relates to a method for electrochemical detection of acephate by the aid of a molecularly imprinted polymer film supported on the surface of a metal-organic framework material. The metal-organic framework material formed by cupric nitrate and 4,4'-biphenyldicarboxylic acid is taken as a support body, acephate is taken as a template molecule, methacrylic acid is taken as a function monomer, ethylene glycol dimethacrylate is taken as a crosslinking agent, azodiisobutyronitrile is taken as an initiator, the molecularly imprinted polymer film supported on the surface of the metal-organic framework material is synthesized and ultrasonically dispersed in a nafion solution for spin-coating of the surface of an electrode, and acephate is detected with a differential pulse voltammetry method. A molecularly imprinted polymer with large specific surface area and high mass transfer speed is obtained and is used for detecting acephate. The method has good stability and high sensitivity.

Description

technical field [0001] The invention relates to a detection method for pesticide residue acephate, in particular to a metal organic framework material surface-loaded molecularly imprinted polymer film prepared for electrochemical detection of acephate. Background technique [0002] Organophosphorus pesticides are a class of organic compounds containing phosphorus. Compared with other types of pesticides, organophosphorus pesticides have the characteristics of broad insecticidal spectrum, high efficacy, short residual period and low price. They are currently the most widely used pesticides in China. Organophosphorus pesticides can cause the accumulation of acetylcholine in arthropods and mammals, causing neurological dysfunction, resulting in damage to the body. Due to the high toxicity of some organophosphorus pesticides, their use and sale have been banned, such as methamidophos, parathion, methyl parathion, monocrotophos, and phosphamide. Since acephate produces the more...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/48
CPCG01N27/48
Inventor 葛慎光兰飞飞梁琳琳鉴燕楠王贺王衍虎于京华颜梅刘海云
Owner UNIV OF JINAN
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