Glutaraldehyde test paper and rapid determination method

A technology of glutaraldehyde and test paper, which is applied in the field of chemical analysis, can solve the problems of inconvenient real-time regulation of glutaraldehyde on site and long color development time of test paper, so as to save the cost of purchasing equipment and personnel training, saving testing cost and reasonable price Effect

Active Publication Date: 2020-04-17
GUANGDONG HUANKAI MICROBIAL SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are only test papers for measuring 1.8% glutaraldehyde in the market, that is, the test paper does not change color when it is lower than 1.8%, and the test paper turns yellow when it is higher than 1.8%. 3 to 10 minutes

Method used

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  • Glutaraldehyde test paper and rapid determination method
  • Glutaraldehyde test paper and rapid determination method

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Experimental program
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Embodiment 2

[0046] Use pure water to prepare a mixture containing 5.1g / L p-xylenolphthalein, 7.8g / L Orange G, 50.8g / L sodium sulfite, 41.8g / L allyltrimethylammonium chloride, and 1.75g / L polyvinyl alcohol Chromogenic solution. The chromatographic filter paper was completely soaked in the above mixture for 10 minutes, the filter paper was taken out, and vacuum-dried at 80°C. After drying, cut the filter paper into small pieces of 5×6 mm, and glue it to one end of a 5×80 mm strip-shaped bottom plate to make glutaraldehyde rapid test paper 2#.

Embodiment 3

[0048] Prepared with pure water containing 4.8g / L thymolphthalein, 2,4,6-trinitro-N-(2-nitrophenyl) aniline, 92.2g / L sodium sulfite, 56.8g / L dimethyldiallyl Ammonium chloride, 2.16g / L gum arabic mixed color developing solution. The chromatographic filter paper was completely soaked in the above mixture for 10 minutes, the filter paper was taken out, and vacuum-dried at 80°C. After drying, cut the filter paper into small pieces of 5×6 mm, and glue it to one end of a 5×80 mm strip-shaped bottom plate to make glutaraldehyde rapid test paper 3#.

[0049] Glutaraldehyde determination test paper embodiment 4

[0050] Use pure water to prepare a mixture containing 9.2g / L Alizarin Blue SA, 5.0g / L Alizarin Yellow GG, 32.5g / L Sodium Sulfite, 18.4g / L Benzyltributylammonium Chloride, and 2.16g / L Gum Arabic Chromogenic solution. The chromatographic filter paper was completely soaked in the above mixture for 10 minutes, the filter paper was taken out, and vacuum-dried at 80°C. After dry...

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Abstract

The invention discloses glutaraldehyde test paper and a rapid determination method. The glutaraldehyde test paper comprises color developing test paper, and the color developing test paper is preparedby dipping filter paper in a color developing agent solution and then drying; wherein the color developing agent solution comprises a color developing agent, a neutralizer, a catalyst and a stabilizer; wherein the catalyst is a cationic surfactant. The glutaraldehyde test paper also comprises a substrate. The rapid determination method using the glutaraldehyde test paper comprises the following steps: immersing the glutaraldehyde test paper into a to-be-tested sample, taking out the glutaraldehyde test paper after 2-5 seconds, and carrying out color comparison on the glutaraldehyde test paperand a standard colorimetric card to determine the concentration of glutaraldehyde in the sample after color development is completed. The glutaraldehyde test paper provided by the invention has the advantages of high color development speed, obvious color gradation, long shelf life, portability and safety. By applying the test paper, the glutaraldehyde content in the sample can be rapidly detected on site, and the test paper has the advantages of short response time, high sensitivity, good stability, simplicity and convenience in operation, economy and practicability.

Description

technical field [0001] The invention relates to the technical field of chemical analysis, in particular to a test paper for measuring glutaraldehyde and a rapid measuring method. Background technique [0002] Glutaraldehyde is an important saturated straight-chain aliphatic binary aldehyde. Its appearance is a colorless transparent oily liquid with a pungent odor. It is an efficient sterilizer and is widely used in food, microbiology industry, medical and health and other fields. The content of glutaraldehyde in use directly affects the effect of use, so the detection of glutaraldehyde is particularly important. At present, the detection of glutaraldehyde is generally divided into monitoring indicator card method, chemical method, spectrophotometric method, chromatography and other methods. The general chemical method uses acid-base titration, and the operation steps are cumbersome and time-consuming. Spectrophotometry and chromatography require some laboratory instruments...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
CPCG01N21/78G01N2021/7759
Inventor 黄报亮秦惠林昆仑邓金花
Owner GUANGDONG HUANKAI MICROBIAL SCI & TECH
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