Method capable of eliminating influence of reagent blank and rapidly detecting content of chlorine dioxide in water

A technology for chlorine dioxide and water detection, which is applied in the direction of material analysis by observing the influence on chemical indicators, and analysis by making materials undergo chemical reactions, etc., which can solve the adverse effects on the accuracy of detection results and the difficulty of effective control of time, etc. problem, to achieve the effect of high accuracy, easy operation, and elimination of influence

Active Publication Date: 2015-06-03
WENZHOU MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the temperature of water samples collected in different seasons and different regions is not the same, the time required for dissolving dry powder detection reagents is also different. It is difficult to effectively control the time required for the entire detection process, which also adversely affects the accuracy of the detection results.

Method used

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  • Method capable of eliminating influence of reagent blank and rapidly detecting content of chlorine dioxide in water

Examples

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Effect test

Embodiment 1

[0033] (1) Preparation of liquid chlorine dioxide detection reagent, the liquid chlorine dioxide detection reagent is configured into a solution with the following components and deionized water according to the concentration of the substance,

[0034] (N,N-Diethyl-1,4-phenylenediamine) sulfate 0.19 mmol / L

[0035] Glycine 0.267 mol / L

[0036] Disodium EDTA 2.69 mmol / L

[0037] Ethylene glycol 0.36 mol / L

[0038] pH6.50 phosphate buffer 30 mmol / L;

[0039] (2) Preparation of chlorine dioxide standard color card after deducting the reagent blank, take seven 10ml glass colorimetric tubes, set the first colorimetric tube as blank tube, and the 2nd to 7th colorimetric tubes as standard tubes, respectively Add 10ml deionized water and 10ml chlorine dioxide standard with concentrations of 0.05mg / L, 0.10mg / L, 0.20mg / L, 0.30mg / L, 0.50mg / L, 0.80mg / L to the blank tube and standard tube Solution, then add 0.2ml of the liquid chlorine dioxide detection reagent described in step (1), r...

Embodiment 2

[0042] (1) Preparation of a liquid chlorine dioxide detection reagent, the liquid chlorine dioxide detection reagent is configured into a solution with the following components and deionized water according to the concentration of the substance,

[0043] (N,N-Diethyl-1,4-phenylenediamine) sulfate 0.28 mmol / L

[0044] Glycine 0.471 mol / L

[0045] Disodium EDTA 4.04 mmol / L

[0046] Ethylene glycol 0.63 mol / L

[0047] pH6.50 phosphate buffer 50 mmol / L;

[0048] (2) Preparation of chlorine dioxide standard color card after deducting the reagent blank, take seven 10ml glass colorimetric tubes, set the first colorimetric tube as blank tube, and the 2nd to 7th colorimetric tubes as standard tubes, respectively Add 10ml deionized water and 10ml chlorine dioxide standard with concentrations of 0.05mg / L, 0.10mg / L, 0.20mg / L, 0.30mg / L, 0.50mg / L, 0.80mg / L to the blank tube and standard tube Solution, then add 0.2ml of the liquid chlorine dioxide detection reagent described in step (1), r...

Embodiment 3

[0051] (1) Preparation of liquid chlorine dioxide detection reagent, the liquid chlorine dioxide detection reagent is configured into a solution with the following components and deionized water according to the concentration of the substance,

[0052] (N,N-Diethyl-1,4-phenylenediamine) sulfate 0.38 mmol / L

[0053] Glycine 0.675 mol / L

[0054] Disodium EDTA 4.04 mmol / L

[0055] Ethylene glycol 0.90 mol / L

[0056] pH6.50 phosphate buffer 80 mmol / L;

[0057] (2) Preparation of chlorine dioxide standard color card after deducting the reagent blank, take seven 10ml glass colorimetric tubes, set the first colorimetric tube as blank tube, and the 2nd to 7th colorimetric tubes as standard tubes, respectively Add 10ml deionized water and 10ml chlorine dioxide standard with concentrations of 0.05mg / L, 0.10mg / L, 0.20mg / L, 0.30mg / L, 0.50mg / L, 0.80mg / L to the blank tube and standard tube Solution, then add 0.2ml of the liquid chlorine dioxide detection reagent described in step (1), r...

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Abstract

The invention discloses a method capable of eliminating the influence of a reagent blank and rapidly detecting the content of chlorine dioxide in water. The method comprises the following steps: firstly, preparing a liquid-type chlorine dioxide detection reagent, then manufacturing a chlorine-dioxide standard color card without the reagent blank by a colorless and transparent PVC (Polyvinyl Chloride) plastic board, putting the chlorine-dioxide standard color card at the bottom part of a blank tube in testing, and reading the concentration of chlorine dioxide corresponding to the standard color card when the color is consistent to that of a sample tube, thereby obtaining the concentration of chloride dioxide in a water sample. The method disclosed by the invention has the advantages that if the method is adopted for carrying out detection on the concentration of chloride dioxide, the influence of the reagent blank on a detection result can be eliminated, and the method is especially suitable for on-site fast detection of chloride dioxide in water.

Description

technical field [0001] The present invention relates to the field of water quality detection, in particular to a method for rapidly detecting chlorine dioxide content in water that can eliminate the influence of reagent blanks. Background technique [0002] Chlorine dioxide (ClO 2 ) is the latest generation of high-efficiency, broad-spectrum and safe sterilizing and fresh-keeping agents recognized internationally at present, and is the most ideal substitute for chlorine preparations, and has been widely used in developed countries in the world. Drinking water treated with chlorine dioxide will not produce teratogenic, mutagenic, and carcinogenic chloroform that is usually produced when chlorine-containing disinfectants such as sodium hypochlorite are used, but skin contact or ingestion of solutions containing high concentrations of chlorine dioxide , may still cause strong irritation and corrosion. [0003] The detection of chlorine dioxide in water mostly uses direct colo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 林林连国军黄陈平
Owner WENZHOU MEDICAL UNIV
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