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

Abstract

The invention provides a test paper for detecting the content of chlorine dioxide in a chlorine dioxide aqueous solution disinfectant and a preparation method thereof. The test paper is an aqueous solution impregnated with chromatographic filter paper containing 5-10% by weight of starch, 2-5% by weight of potassium iodide, 0.1-0.5% by weight of color-fixing agent polyvinyl alcohol and 0.1-0.2% by weight of sodium carbonate. . The temperature of the impregnating liquid is 10-25°C. After impregnating the filter paper for 5-10 seconds, take it out and tie it dry, dry it with a hot air flow at 85°C-95°C, cut it into strips of paper with a width of 0.5-0.7cm, and put them in a paper In the square box of the mouth. The test paper tests the concentration range of ClO2 in chlorine dioxide disinfectant from 0 to 1000 mg / L, and it has the characteristics of fast, accurate, stable, safe and non-toxic.

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...

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 as the chlorine test paper produced by Shanghai Sanaisi Reagent Co., Ltd. is applied to ClO 2 Sensitivity is low during test, and the color development of low concentration range is very light, and it is difficult to make color scale, and the available chlorine test paper of Chinese patent CN87102722 application, although it is also potassium iodide test paper, its test range is in the high concentration range of liquid chlorine, and it is used in testing ClO 2 In liquid, the sensitivity is not high enough, and the stability is poor, and the test paper is easy to change color. For example, in the Chinese patent CN1055240, the available chlorine test paper announced is not high enough in sensitivity, and the color is light.