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

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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

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

Example Embodiment

[0043] Example 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 for calibration; adopt the high-concentration chlorine dioxide colorimetric device of the present invention to carry out high-concentration chlorine dioxide colorimetric device simultaneously. Chlorine dioxide is directly detected, and 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 into the colorimetric bottle 12 with an inner diameter of 16mm to the mark 17 above the scale mark, 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 of the colorimetric groove, so that the light beam...

Example Embodiment

[0055] 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 calibrate with conventional iodometric method; adopt one of the high-concentration chlorine dioxide colorimeters of the present invention to carry out High-concentration chlorine dioxide is directly detected, and the detection method is the same as that in Example 1, except that the central wavelength of the LED is 445 nm, and the emission half-angle is 8°.

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

[0058] Table 2: Chlorine dioxide concentration measured by high-concentration chlorine dioxide colorimetric device

[0059]

Example Embodiment

[0060] Embodiment three:

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

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

[0063] Table 3: Chlorine dioxide concentration measured by high-concentration chlorine dioxide colorimetric device

[0064]

[0065]

[0066] The data in Tables 1 to 3 show that the three high-concentration chlorine dioxide detection methods and colorimetric devices described in the examples can directly detect high-concentration chlorine dio...

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PUM

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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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