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Preparation method of polymethyl blue/acetylene black composite modified glassy carbon electrode and application thereof in determination of paracetamol

A glassy carbon electrode and polymethyl blue technology, applied in the direction of material electrochemical variables, etc., can solve the problems of time-consuming, complicated and expensive, etc., and achieve the effect of long service life

Inactive Publication Date: 2017-06-20
XINYANG NORMAL UNIVERSITY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

These methods either use complex and expensive instruments, or require time-consuming sample pretreatment processes

Method used

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  • Preparation method of polymethyl blue/acetylene black composite modified glassy carbon electrode and application thereof in determination of paracetamol
  • Preparation method of polymethyl blue/acetylene black composite modified glassy carbon electrode and application thereof in determination of paracetamol
  • Preparation method of polymethyl blue/acetylene black composite modified glassy carbon electrode and application thereof in determination of paracetamol

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Embodiment 1

[0014] The preparation method of polymethyl blue / acetylene black composite modified glassy carbon electrode is as follows: ①add 0.2mg acetylene black to 1mL distilled water, and disperse ultrasonically for 120min to obtain acetylene black suspension; ②Glassy carbon electrodes (effective diameter 3mm) are sequentially Use 0.3 μm and 0.05 μm alumina powder to polish the suede until it becomes a mirror surface, then ultrasonically clean it in absolute ethanol and distilled water for 5 minutes, then wash it with distilled water, and dry it with an infrared lamp for later use; ③Use a micro-sampler to take 6 μL The acetylene black suspension prepared in step ① was added dropwise on the surface of the glassy carbon electrode treated in step ②, and dried under infrared light to obtain the acetylene black modified glassy carbon electrode (ACET / GCE); ④ place the acetylene black modified glassy carbon electrode on the 5.0×10 -3 Polymethylene blue / acetylene black composite modified glassy...

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Abstract

The invention relates to a polymethyl blue / acetylene black composite modified glassy carbon electrode prepared by an electrodeposition method and a dispensing method. The electrochemical behavior of acetaminophen (PCT) on the modified electrode is studied by a cyclic voltammetry (CV). The experimental result shows that the modified electrode has a good electrocatalytic performance for the redox of PCT. Compared with a bare electrode and a polymethyl blue-acetylene black modified electrode, the oxidation peak current of PCT on the polymethyl blue / acetylene black modified glassy carbon electrode is obviously improved. Through the determination of a differential pulse voltammetry (DPV), the PCT has a good linear relationship with the oxidation peak current in the concentration range of 2.0 multiplied by 10<-6> to 0.4 multiplied by 10<-3>mol / L, and the correlation coefficient is 0.992, and the detection limit of PCT is 1.0 multiplied by 10<-6>mol / L when the signal to noise ratio is 3.

Description

technical field [0001] The invention belongs to the technical field of chemically modified electrodes, and in particular relates to a preparation method of a polymethyl blue / acetylene black composite modified glassy carbon electrode and its application in the determination of paracetamol. Background technique [0002] Chemically modified electrodes are currently one of the most active frontiers in electrochemistry and electroanalytical chemistry. It is molecular design on the surface of the electrode, so that the electrode has certain specific chemical and electrochemical properties. There are many types of modified electrodes, such as small organic molecules, metal nanoparticles (Nanoparticles, NPs) and polymer films. Among them, the polymer film modified electrode prepared by modifying the electrode surface with a polymer film as a modifier has a wide variety of polymers, stable performance, high concentration of electroactive centers, three-dimensional available potentia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/48
CPCG01N27/30G01N27/48
Inventor 卢先春许春萱陈劲草李哓远张巧娜
Owner XINYANG NORMAL UNIVERSITY
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