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Method for detecting catechol concentration in solution

A catechol and concentration technology, which is applied in the field of detecting the concentration of catechol in a solution, can solve the problems of inability to meet rapid detection, large consumption of reagents, long analysis time, etc., achieve good thermochemical stability, and improve detection. Sensitive, easy to prepare effects

Active Publication Date: 2018-09-04
江苏中任油漆有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the methods for determining catechol mainly include spectrophotometry, high performance liquid chromatography, thin-layer chromatography, micellar electrokinetic chromatography, and capillary electrophoresis. Although these techniques are widely used, the instruments used are expensive and expensive. The consumption of reagents is large and the analysis time is long, which cannot meet the needs of on-site rapid detection

Method used

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  • Method for detecting catechol concentration in solution
  • Method for detecting catechol concentration in solution

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Embodiment 1

[0030] A method for detecting the concentration of catechol in a solution, which uses a three-electrode system to detect catechol in the solution to be tested by cyclic voltammetry, and obtains the concentration of catechol in the solution to be tested according to the linear equation of catechol The concentration of phenol, the working electrode in the three-electrode system is modified by aminated graphene quantum dots, and the working electrode is a glassy carbon electrode.

[0031] The method for detecting the concentration of catechol in the solution, the specific operation of the modified treatment of aminated graphene quantum dots is as follows: the working electrode is immersed in a solution containing 2 mg / mL aminated graphene quantum dots, and after scanning by cyclic voltammetry Take it out and dry it in an infrared drying oven.

[0032] Among them, the scan parameters are: initial potential 0V, highest potential 1V, lowest point 0V, final potential 0V, scan rate 0....

Embodiment 2

[0043] On the basis of embodiment 1, the method for the concentration of pyrocatechol in the described detection solution, after the working electrode is pretreated, before the modified treatment of the aminated graphene quantum dots, go through the following treatment:

[0044] First prepare an electrolyte solution containing 10mM zirconium oxychloride and 0.3M potassium chloride with magnetized water, then immerse the pretreated working electrode in the electrolyte solution to electrodeposit a layer of nano-zirconia layer; Voltammetric method deposits 8-10 laps at -1.1V ~ +0.7V and then washes with ultrapure water;

[0045] Then Phytophthora, propolis and tourmaline are ground into powder respectively and cross 200 mesh sieves to obtain Phytophthora powder, propolis powder and tourmaline powder, and Phytophthora powder and fumed white carbon black, propolis powder, tourmaline powder and magnetized water are according to mass ratio: Mix at 4:5:2:1:2000, ultrasonically dispers...

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Abstract

The invention discloses a method for detecting the concentration of catechol in solution. The method includes detecting the catechol in the to-be-detected solution by three-electrode systems by the aid of cyclic voltammetry; acquiring the concentration of the catechol in the to-be-detected solution according to linear equations of the catechol. Working electrodes in the three-electrode systems are modified by quantum dots of amino-graphene and are glass carbon electrodes. The method has the advantages that the method is easy to implement and high in sensitivity, the concentration of the catechol can be quickly detected by the aid of the method, and the catechol in the solution of mixed samples can be identified in a high-sensitivity manner.

Description

technical field [0001] The invention relates to the technical field of catechol detection. More specifically, the present invention relates to a method for detecting the concentration of catechol in a solution by cyclic voltammetry based on the electrochemical sensing modified by aminated graphene quantum dots. Background technique [0002] Catechol (1,2-dihydroxybenzene) is ubiquitous in nature and is an intermediate in the degradation of aromatic compounds and microbial degradation of lignin. It is used as a developer, hair dye, fungicide, and rubber manufacturing It is an important chemical and pharmaceutical intermediate. Studies have shown that catechol is an important intermediate product in the degradation of phenols, its toxicity is greater than phenol, and it is toxic to Daphnia, zebrafish, salmon, rabbit, mouse and human cell lines. Therefore, the effective removal of catechol in the environment has attracted widespread attention. Therefore, it is of great signi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/48
CPCG01N27/48
Inventor 肖琦黄珊冯萌萌卢双燕黄初升苏炜何英姿
Owner 江苏中任油漆有限公司
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