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Method for quickly determining contents of peracetic acid and hydrogen peroxide in solution

A technology of peracetic acid and hydrogen peroxide, which is used in material analysis by observing the influence of chemical indicators, measurement of color/spectral properties, and analysis by chemical reaction of materials, etc., can solve the problem of not being able to simultaneously measure peroxy Acetic acid and hydrogen peroxide concentration, large error in measurement results, high measurement cost, etc., to achieve the effect of less water sample volume and reaction reagent dosage, low detection limit, and fast measurement speed

Inactive Publication Date: 2019-01-11
HUAQIAO UNIVERSITY
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Problems solved by technology

[0004] The present invention proposes a simple, Spectrophotometric method for accurate and rapid determination of peracetic acid and hydrogen peroxide in solutions

Method used

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  • Method for quickly determining contents of peracetic acid and hydrogen peroxide in solution
  • Method for quickly determining contents of peracetic acid and hydrogen peroxide in solution
  • Method for quickly determining contents of peracetic acid and hydrogen peroxide in solution

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Embodiment

[0029] A kind of method of peracetic acid and hydrogen peroxide content in the rapid determination solution of the present embodiment, it is to carry out as follows:

[0030] Step 1: Make a standard curve for determining the total concentration of peracetic acid and hydrogen peroxide:

[0031] 1. Add 0.05mL of sulfuric acid solution, 0.01mL of ammonium molybdate solution and 0.4mL of potassium iodide solution into ultrapure water to obtain mixed solution A1, measure the absorbance value of mixed solution A1 at a specific absorption wavelength, and zero; Among the present embodiment, specific absorption wavelength is 350nm;

[0032] 2. Add the same volume (V1=0.1mL) of peracetic acid solution standard samples with different concentration gradients to the mixed solution A1 to obtain a series of mixed solutions B1 with a total reaction volume of 2.5mL;

[0033] 3. After reacting at 5-25°C for 1-3 minutes, the oxidation color is stable, measure the absorbance value of the mixed s...

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Abstract

The invention discloses a method for quickly determining contents of peracetic acid and hydrogen peroxide in a solution. The method comprises the following steps: determining the total concentration of peracetic acid and hydrogen peroxide in a standard solution by taking ammonium molybdate as a catalyst and potassium iodide as an indicator; determining the concentration of peracetic acid in the standard solution by taking potassium iodide as the indicator; respectively fitting, thereby acquiring a standard curve and a linear regression equation of the total concentration of peracetic acid andhydrogen peroxide and the concentration of peracetic acid relative to respective absorbance values; calculating the total content of peracetic acid and hydrogen peroxide and the content of peracetic acid in a to-be-detected sample, by detecting the absorbance value of the to-be-detected sample after reacting under the same condition; and acquiring the content of hydrogen peroxide in the to-be-detected sample in the manner of minusing. The method is simple and convenient in operation, accurate, sensitive, green, environment-friendly, economical and practical; the method can be widely applied tothe industries of environmental protection, food and medical treatment; the method can be used for quickly and accurately detecting the residual volume of peracetic acid and hydrogen peroxide in various samples after being oxidized, bleached or disinfected with peracetic acid.

Description

technical field [0001] The invention belongs to the technical field of peroxide detection, and in particular relates to a method for quickly measuring the contents of peracetic acid and hydrogen peroxide in a solution. Potassium iodide is used as an indicator to quickly measure the concentrations of peracetic acid and hydrogen peroxide in the solution. Background technique [0002] Peracetic acid has strong oxidation ability, and its reaction product is environmentally friendly, so peracetic acid is widely used as oxidant, disinfectant, sterilizer and bleaching agent in environmental protection, food, medical and printing and dyeing industries. However, peracetic acid is highly corrosive and toxic to a certain extent, and has a strong irritating effect on eyes, skin, mucous membranes and upper respiratory tract. In addition, residual peracetic acid in the human body can also cause damage to human genetic material and gene mutation. Therefore, during the use of peracetic acid...

Claims

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Application Information

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IPC IPC(8): G01N21/33G01N21/78
CPCG01N21/33G01N21/78
Inventor 邹景肖钧洋张剑桥蔡婳婳庞子君苑宝玲
Owner HUAQIAO UNIVERSITY
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