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A kind of rapid determination method of hydrogen peroxide content in solution

A technology for rapid determination of hydrogen peroxide, applied in material analysis by observing the effect on chemical indicators, analysis by chemical reaction of materials, color/spectral property measurement, etc. There are many problems such as large error in the measurement results, complicated and tedious operations, etc., to achieve the effect of rapid determination of hydrogen peroxide content, reliable results, and cheap instruments

Active Publication Date: 2020-08-07
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention proposes a rapid determination method for hydrogen peroxide content in a solution in order to solve the problems of complex and cumbersome operation, large measurement error, long measurement time, toxic reaction reagent and high measurement cost in the existing hydrogen peroxide determination method.

Method used

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  • A kind of rapid determination method of hydrogen peroxide content in solution
  • A kind of rapid determination method of hydrogen peroxide content in solution

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Embodiment 1

[0021] A kind of rapid assay method of hydrogen peroxide content in the solution of the present embodiment, it is to carry out according to the following steps:

[0022] Step 1: Make a standard curve:

[0023] 1. Add 3mL of ferrous sulfate solution and 1mL of N,N-diethyl-p-phenylenediamine sulfate solution into 5.95mL of distilled water to obtain mixed solution A, measure the absorbance value of mixed solution A at 510nm, and zero ;

[0024] 2. Add 0.05mL of hydrogen peroxide solution standard samples of different concentrations to mixed solution A to form mixed solution B, so that hydrogen peroxide in different mixed solutions B forms a concentration gradient, and the total reaction volume is 10mL;

[0025] 3. After the mixed solution B was oxidized and developed for 0.5 minutes, measure the absorbance value of the mixed solution B at 510 nm after color development, denoted as a;

[0026] 4. Take a as the abscissa and the final concentration of hydrogen peroxide in the mixe...

Embodiment 2

[0041] A kind of rapid assay method of hydrogen peroxide content in the solution of the present embodiment, it is to carry out according to the following steps:

[0042] Step 1: Make a standard curve:

[0043] 1. Add 3mL of ferrous sulfate solution and 1mL of N,N-diethyl-p-phenylenediamine sulfate solution into 6.95mL of distilled water to obtain mixed solution A, measure the absorbance value of mixed solution A at 551nm, and zero ;

[0044] 2. Add 0.05mL of hydrogen peroxide solution standard samples of different concentrations to mixed solution A to form mixed solution B, so that hydrogen peroxide in different mixed solutions B forms a concentration gradient, and the total reaction volume is 10mL;

[0045] 3. After the mixed solution B was oxidized and developed for 0.5 minutes, measure the absorbance value of the mixed solution B at 551 nm after color development, which is recorded as a;

[0046] 4. Take a as the abscissa and the final concentration of hydrogen peroxide i...

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Abstract

The invention discloses a method for rapid determination of hydrogen peroxide content of a solution. Hydrogen peroxide is excited by ferrous iron ion, a tracer agent of p-phenylenediamine of N, N-diethyl is employed, by the test of the absorbance after the reaction of the standard sample of concentration gradient, a criterion curve and a linear regression equation of the hydrogen peroxide concentration relative to the absorbance are obtained by fitting, and the relevant hydrogen peroxide content is obtained by testing of the absorbance after the same reaction of samples by rapid determination, the method is simple in operation, accurate and sensitive, green and environmentally friendly, economical and practical, and the hydrogen peroxide content in the samples is testable rapidly in the laboratory and in-situ by the use of UV-visible spectrophotometer only. The method is widely applicable in environmental protection, chemical and medical industries, and in rapid and accurate detections of residual hydrogen peroxide content on a variety of samples by the treatment of oxidation, bleach or disinfection.

Description

technical field [0001] The present invention relates to a method for rapid determination of hydrogen peroxide, in particular to a method for rapidly detecting the content of hydrogen peroxide in a solution using ferrous ions as an activator and N,N-diethyl-p-phenylenediamine as an indicator . Background technique [0002] Due to its strong oxidizing ability and environmental protection features, hydrogen peroxide is widely used as oxidant, disinfectant, sterilant and bleaching agent in environmental protection, daily chemical, food, medical and printing and dyeing industries. In addition, hydrogen peroxide can also be activated by transition metal ions, metal oxides, microwave radiation, and ultraviolet radiation to generate hydroxyl radicals with stronger oxidizing ability (E0=1.8-2.7V), which is widely used in the field of environmental protection, especially Removal of refractory organic pollutants and inactivation of pathogenic microorganisms in the field of water treat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78G01N21/31
CPCG01N21/31G01N21/78
Inventor 邹景蔡婳婳刘鑫苑宝玲周真明李飞廖晓斌刘淑坡
Owner HUAQIAO UNIVERSITY
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