Quick determining method for content of peroxy-monosulfate in solution

A rapid determination, sulfate technology, applied in material analysis by observing the effect of chemical indicators, measurement of color/spectral properties, analysis by chemical reaction of materials, etc., can solve the problem of large error in measurement results and equipment costs. High, toxic and harmful reaction reagents, etc., to achieve the effect of reducing the error of the measurement result, strong oxidizing ability, and simple and easy method.

Inactive Publication Date: 2017-05-31
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of complex and cumbersome operation of the existing measurement method, large measurement error, long measurement time, toxic and harmful reaction reagent, narrow application range and high equipment cost, and provides a solution of persulfate Rapid determination method of content

Method used

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  • Quick determining method for content of peroxy-monosulfate in solution
  • Quick determining method for content of peroxy-monosulfate in solution

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specific Embodiment approach 1

[0014] Specific embodiment one: the rapid assay method of persulfate content in a kind of solution of the present embodiment, it is to carry out according to the following steps:

[0015] Step 1: Make a standard curve: add the ferrous ion solution and N,N-diethyl-p-phenylenediamine solution into pure water to obtain a mixed solution A, measure the absorbance value of the mixed solution A at a specific absorption wavelength, and zero it Add persulfate standard sample in mixed solution A, make peroxosulfate form concentration gradient; Then mixed solution A is carried out oxidation color development reaction after a period of time, after measuring color development, mixed solution A is at characteristic absorption wavelength place The absorbance value is recorded as a; with a as the abscissa and the concentration of the standard sample of persulfate as the ordinate, a standard curve and its linear regression equation are established; wherein, the concentration of the ferrous ion ...

specific Embodiment approach 2

[0017] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the pure water described in step 1 and step 2 is one of distilled water, deionized water, ultrapure water or several of them in any volume ratio The combination.

specific Embodiment approach 3

[0018] Specific embodiment three: what this embodiment is different from specific embodiment one or two is that the ferrous ion solution described in step one and step two is ferrous perchlorate, ferrous chloride, ferrous nitrate, ferrous sulfate One or more of the iron and ferric sulfate solutions are mixed in any proportion.

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Abstract

The invention discloses a quick determining method for content of peroxy-monosulfate in solution, and relates to a determining method of peroxy-monosulfate, which aims at solving the problems of complicated operation, long determining time, toxicity of test reagent, large error of determining result, high determining cost, and use of expensive instrument and equipment in determining, and the like in the existing determining method. The quick determining method has the advantages that N,N-diethyl-p-phenylenediamine is used as an indication agent to quickly determine the content of the peroxy-monosulfate in a to-be-determined sample; the operation is simple and convenient, the stability is good, the green and environment-friendly effects are realized, the economic and practical effects are realized, and the content of peroxy-monosulfate in the sample can be quickly determined in laboratories and field by only using an ultraviolet and visible spectrophotometer; the response time is short, the sensitivity is high, and the minimum determining content of peroxy-monosulfate can reach 0.05mumol L<-1>; the method can be widely applied to the quick, environment-friendly and effective detection of the content of peroxy-monosulfate in the chlorinating, bleaching or disinfection samples in environment protection, dye printing and medical care industries.

Description

technical field [0001] The present invention relates to a rapid determination method of peroxymonosulfate, in particular to a method for rapidly detecting the content of peroxymonosulfate in a solution using ferrous ion as an activator and N,N-diethyl-p-phenylenediamine as an indicator Methods. Background technique [0002] In recent years, peroxymonosulfate and its activation to generate active free radicals have been widely used to degrade toxic pollutants, bleach dyes and inactivate pathogenic microorganisms due to their high oxidizing ability (E0=1.82V). Among them, the common methods of activating persulfate include transition metal ion activation represented by divalent cobalt and ferrous ions, spinel magnetic materials such as CoFe2O4 and Fe3O4, and carbon materials such as carbon nanotubes and graphene. The representative multi-phase activation method, and the external energy activation method represented by ultraviolet radiation, microwave radiation, electron beam ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78G01N21/31
CPCG01N21/78G01N21/31
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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