Test paper for detecting disinfector of chlorine dioxide, and preparation method

A chlorine dioxide, detection test paper technology, applied in material analysis by observing the effect on chemical indicators, measurement of color/spectral properties, analysis by chemical reaction of materials, etc., can solve the problem of inapplicability, poor stability, The test paper is easy to change color and other problems, to achieve the effect of enhancing paper fastness, good stability, and not easy to escape

Inactive Publication Date: 2006-07-05
上海三爱思试剂有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Ozone is a strong oxidant, no harmful and toxic substances will be produced after disinfection, it is an excellent disinfectant, but it is more expensive and inconvenient to use
Liquid chlorine is currently the most widely used, but it will form toxic and harmful organic halides with organic matter in water, and its potential harm has become an indisputable fact
The disinfection effect of chlorine dioxide is second only to ozone, and its toxicity is safer when the residual amount is low, while the disinfection effect of chloramine is the worst, and it cannot completely solve the problem of organic chloride production
[0003] None of the existing available chlorine test papers is suitable for testing ClO in the concentration range of 5-1000mg/L 2 , such

Method used

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Examples

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Embodiment 1

[0016] Preparation of impregnating solution: hot pure water dissolves 0.2% by weight of color-fixing agent polyvinyl alcohol, adds 5% by weight of starch and boils until the solution is transparent, cools to room temperature, adds 0.2% by weight of sodium carbonate, and then adds 5% by weight of potassium iodide Dissolved in aqueous solution.

[0017] Preparation of test paper: Take a chromatographic filter paper with excellent water absorption and immerse it in the above impregnation solution for 5-10 seconds. Cut into strips of paper with a width of 0.7cm, roll them into about 4 meters, and put them in a square box with a paper-drawing opening. After plastic sealing, the shelf life is one year.

[0018] Color card production: use chlorine dioxide effervescent tablets or stock solution to add supporting active agents to prepare standard solutions of different concentrations, and use ClO 2 It is prepared into standard solutions of 0, 5, 10, 25, 50, 100, 250, 500 and 1000 mg / L...

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Abstract

The invention provides a test paper for detecting the chlorine dioxide content of the chlorine dioxide aqueous solution disinfectant and the preparing method thereof. And the test paper is a chromatographic filter paper dipped with an aqueous solution mixed of starch 5-19 wt%, potassium iodide 2-5 wt%, color food additive polyvinyl alcohol 0.1-0.5 wt% and sodium carbonate 0.1-0.2 wt%, where the dipping solution is at 10-25 deg.C, the filter paper is dipped 5-10 s and then taken out, dried by hot air flow at 85 deg.C-95 deg.C, and cut into 0.5-0.7 cm wide strips to be put in a square box with a paper drawing outlet. The testing range of the test paper is 0-1000 mg/L and it has the characters: quick, accurate, safe and nontoxic.

Description

technical field [0001] The invention relates to a test paper for rapid detection of chlorine dioxide content in a chlorine dioxide aqueous solution disinfectant and a preparation method thereof. Background technique [0002] In recent years, the popularization and application of chlorine dioxide disinfectant has been accelerated. At present, the disinfectants commonly used in hospitals, food industry and drinking water mainly include ozone, liquid chlorine, chlorine dioxide and chloramine. Ozone is a strong oxidizing agent and does not produce harmful and toxic substances after disinfection. It is an excellent disinfectant, but it is expensive and inconvenient to use. Liquid chlorine is currently the most widely used, but it will form toxic and harmful organic halides with organic matter in water, and its potential harm has become an indisputable fact. The disinfection effect of chlorine dioxide is only second to that of ozone, and its toxicity is safer when the residual a...

Claims

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Application Information

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IPC IPC(8): G01N21/78G01N21/25
Inventor 顾慧莲柯德宏
Owner 上海三爱思试剂有限公司
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