Method for detecting concentration of hydrogen peroxide in solution

A technology of hydrogen peroxide concentration and hydrogen peroxide, which is applied in measurement devices, material electrochemical variables, material analysis by electromagnetic means, etc., can solve the problems of inability to meet rapid detection, large consumption of reagents, and long analysis time, etc. Achieve good catalytic effect, simple and convenient detection process, and improve sensitivity

Active Publication Date: 2021-07-09
菏泽市巨丰新能源有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the methods for determining hydrogen peroxide mainly include liquid chromatography, chemiluminescence, capillary electrophoresis, fluorescence technology, mass spectrometry and spectrophotometry, etc. Although these technologies are widely used, the instruments used are expensive, the consumption of reagents is large and the analysis It takes a long time and cannot meet the needs of on-site rapid detection

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  • Method for detecting concentration of hydrogen peroxide in solution
  • Method for detecting concentration of hydrogen peroxide in solution

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Embodiment 1

[0028] The invention provides a method for detecting the concentration of hydrogen peroxide in a solution, comprising:

[0029] Step 1. Use 0.5μm, 0.3μm and 0.05μm α-A1 in sequence 2 o 3 Grind the surface of the glassy carbon electrode into a mirror surface with powder, rinse the surface of the glassy carbon electrode with ultrapure water, and then place it in ultrapure water and ethanol for 10 minutes of ultrasonication. After the ultrasonication is completed, wash it with ultrapure water and dry it at room temperature. Obtain a pretreated glassy carbon electrode; take 1ml of aminated reduced graphene oxide with a concentration of 0.5 mg / ml and ultrasonically treat it for 5 minutes, pipette 5 μL of aminated reduced graphene oxide that has been ultrasonically treated with a pipette gun, and drop it on the pretreated Treat the surface of the glassy carbon electrode, place it in a GJ-1A type infrared rapid drying oven to dry for 20 minutes, take it out, and cool it to room temp...

Embodiment 2

[0043] The invention provides a method for detecting the concentration of hydrogen peroxide in a solution, comprising:

[0044] Step 1. Use 0.5μm, 0.3μm and 0.05μm α-A1 in sequence 2 o 3 Grind the surface of the glassy carbon electrode into a mirror surface with powder, rinse the surface of the glassy carbon electrode with ultrapure water, and then place it in ultrapure water and ethanol for 10 minutes of ultrasonication. After the ultrasonication is completed, wash it with ultrapure water and dry it at room temperature. Obtain a pretreated glassy carbon electrode; use a pipette gun to drop 5 μL of cerium / silicon dioxide dispersion solution on the surface of the pretreated glassy carbon electrode, then place it in a GJ-1A infrared rapid drying oven for 20 minutes and take it out. Cooling to room temperature, the preparation method of the cerium / silicon dioxide dispersion liquid is: 0.5gCe(NO3)3.6H2O is dissolved in 100ml deionized water, then add 25g nano-silicon dioxide, aft...

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Abstract

The invention discloses a method for detecting the concentration of hydrogen peroxide in a solution, comprising: preparing an aminated reduced graphene oxide and a Pt metal modified electrode; preparing hydrogen peroxide standard solutions with different concentrations; The electrode is the working electrode, and the chronoamperometry is used to detect each part of the hydrogen peroxide standard solution in turn to obtain a chronoamperograph, record the concentration of each part of the hydrogen peroxide standard solution and its corresponding current intensity, and perform regression analysis to obtain the The relational equation between the concentration of hydrogen peroxide and the current intensity; obtain the corresponding current intensity of the buffer solution to be tested, and deduce the concentration of hydrogen peroxide in the buffer solution to be tested according to the relational equation between the concentration of hydrogen peroxide and the current intensity. The invention has the advantages of simple operation, high sensitivity, low detection limit and the like.

Description

technical field [0001] The invention relates to the technical field of hydrogen peroxide detection. More specifically, the present invention relates to a method for detecting the concentration of hydrogen peroxide in a solution. Background technique [0002] Hydrogen peroxide is a very important and simple compound commonly used in food manufacturing, environmental protection, and clinical and pharmaceutical fields. In living organisms, hydrogen peroxide plays a major role in regulating a variety of biological processes, such as immune cell activation, kidney function, and intracellular cell signaling. Furthermore, excess hydrogen peroxide in plasma interferes with cell proliferation and insulin signaling, thereby causing various diseases such as cancer, Parkinson's disease, and cardiovascular disease. Therefore, it is very important to develop fast, accurate, sensitive and low-cost hydrogen peroxide sensors. At present, the methods for determining hydrogen peroxide mainl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30G01N27/416
Inventor 肖琦黄珊李家文金晓宇
Owner 菏泽市巨丰新能源有限公司
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