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Detection method and colorimetric detection device for high-concentration chlorine dioxide

A chlorine dioxide, detection method technology, applied in the direction of color/spectral property measurement, etc., can solve problems such as unfavorable determination

Inactive Publication Date: 2012-09-26
GUANGDONG HUANKAI MICROBIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no such product on the market at present. The portable chlorine dioxide solution concentration instantaneous measuring instrument disclosed by CN101806721A adopts the principle of GB 26366-2010 spectrophotometry. L needs to be diluted before measurement, which is not conducive to high concentration ClO in theory 2 Determination of

Method used

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  • Detection method and colorimetric detection device for high-concentration chlorine dioxide
  • Detection method and colorimetric detection device for high-concentration chlorine dioxide
  • Detection method and colorimetric detection device for high-concentration chlorine dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Prepare high-concentration chlorine dioxide pure solution according to the method for preparing pure chlorine dioxide solution in GB 26366-2010, and use conventional iodometric method to calibrate; Direct detection of chlorine dioxide, the detection method is as follows:

[0045] 1) Turn on the power switch 5 of the colorimetric device, and remove the shading cover 6;

[0046] 2) Add distilled water to the colorimetric bottle 12 with an inner diameter of 16mm to above the mark 17 on the scale line, tighten the sealing cap 13, and set it as a blank bottle;

[0047] 3) Place the blank bottle in the colorimetric tank 7, and the positioning mark 14 on the outer wall of the blank bottle corresponds to the positioning mark 15 on the colorimetric notch, so that the light beam emitted by the LED 8 with a center wavelength of 440nm and an emission half-angle of 5° passes through Colorimetric bottle 12;

[0048] 4) Put on the shading cover 6, press the "zero adjustment" key 3 t...

Embodiment 2

[0056] Prepare high-concentration chlorine dioxide pure solution according to the method for preparing pure chlorine dioxide solution in GB 26366-2010, and use conventional iodometric method to calibrate; adopt one of the high-concentration chlorine dioxide colorimeter of the present invention to carry out simultaneously High-concentration chlorine dioxide is directly detected, and the detection method is the same as in Example 1, except that the center wavelength of the LED is 445nm, and the emission half-angle is 8°.

[0057] The measured data are shown in the table below:

[0058] Table 2: Determination of chlorine dioxide concentration by high-concentration chlorine dioxide colorimetric device

[0059]

Embodiment 3

[0061] Prepare standard high-concentration chlorine dioxide pure solution according to the method for preparing pure chlorine dioxide solution in GB 26366-2010, and use conventional iodometric method to calibrate; adopt one of the high-concentration chlorine dioxide colorimeter of the present invention simultaneously Carry out direct detection of high-concentration chlorine dioxide, the detection method is the same as that of Example 1, the difference is that the center wavelength of the LED is 450nm, and the emission half-angle is 15°.

[0062] The measured data are shown in the table below:

[0063] Table 3: Determination of chlorine dioxide concentration by high-concentration chlorine dioxide colorimetric device

[0064]

[0065]

[0066] Table 1~table 3 data show that three kinds of high-concentration chlorine dioxide detection methods and its colorimetric device described in the embodiment can directly carry out high-concentration chlorine dioxide detection, and the...

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Abstract

The invention discloses a detection method and a colorimetric detection device for high-concentration chlorine dioxide. The detection method includes: placing a sample to be tested in a colorimetric bottle, sealing the colorimetric bottle, using an LED with 440-450nm center wavelength as a single-color light source to emit light passing through the sample to be tested, which contains chlorine dioxide; and detecting energy of the light passing through the sample to be tested, and calculating to obtain concentration value of ClO2. By the detection method and the colorimetric detection device, the technical problem that measurement of chlorine dioxide concentration has great errors as existing measuring methods need dilution when the concentration of the chlorine dioxide is higher than 250mg / L is solved. The detection method consumes no extra reagents and allows for quick, accurate and dilution-free measurement of high-concentration chlorine dioxide content on the site.

Description

technical field [0001] The invention relates to a high-concentration chlorine dioxide detection method and a colorimetric detection device thereof. Background technique [0002] Chlorine dioxide (ClO 2 ) is currently internationally recognized as a new type of disinfectant with high efficiency, broad spectrum and A1 safety. It is widely used in drinking water disinfection, food safety control, medical device disinfection and other fields. Due to the high concentration of ClO 2 The solution is very unstable and commercially available stabilized chlorine dioxide solutions are not true ClO 2 , but chlorite itself does not have the function of disinfection. When using it, an activator needs to be added to release ClO with high disinfection and sterilization effects. 2 . The new national standard GB26366-2010 "Hygienic Standards for Chlorine Dioxide Disinfectants" stipulates that ClO 2 The concentration of disinfectants used in various fields: as low as 1mg / L-2mg / L, as high ...

Claims

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Application Information

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IPC IPC(8): G01N21/31
Inventor 秦惠邓金花陈维吴清平
Owner GUANGDONG HUANKAI MICROBIAL SCI & TECH
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