Method for evaluating chlorine dioxide release rate
A chlorine dioxide release rate technology, which is applied in the direction of material analysis by observing the impact on chemical indicators, measuring devices, and analysis by making materials undergo chemical reactions, can solve the lack of simple methods for evaluating the release rate of chlorine dioxide , low detection limit and other problems, to achieve the effect of wide measurement range, good contrast, easy to observe and compare
Active Publication Date: 2019-09-17
广州超威生物科技有限公司
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[0008]
The present invention aims at the problem that the prior art lacks a simple method for evaluating the release rate of chlorine dioxide, and provides a method for qualitatively or semi-quantitatively evaluating the release rate of chlorine dioxide that is simple and easy to implement and has a low detection limit
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[0040] 1. Construct the color spot-release rate color card
[0041] A chlorine dioxide solid slow-release agent is selected as a standard sample, which is granular and packed in a breathable non-woven fabric, with a net weight of 3 grams per bag. Test the release rate of chlorine dioxide when it is in a steady release period, test environment: room temperature 23±2°C, humidity 60±10%. details as follows:
[0042] 1. Using fluorescence spectroscopy, construct the linear relationship between the concentration of chlorine dioxide in the solution and the fluorescence intensity, and make a standard curve.
[0043] 2. Put a package of 3 grams of standard samples in a 5L glass desiccator, which is connected with an air inlet pipe and an air outlet pipe. Use an air sampler to collect the air in the desiccator at a flow rate of 200mL / min. Red solution is absorbed, sampled for 5 minutes, and the fluorescence intensity of the absorbing solution is tested by fluorescence photometry, the...
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The invention relates to the technical field of chlorine dioxide disinfection sterilization, in particular to a method for evaluating a chlorine dioxide release rate. The method provided by the invention comprises the following steps: firstly forming a colorimetric card showing one-to-one correspondence between chlorine dioxide release rates and color spots, then detecting color spots of to-be-evaluated samples in the same test environment and comparing with the colorimetric card, thus the chlorine dioxide release rates of the to-be-evaluated samples can be directly read according to the colorimetric card. The method provided by the invention has the advantages that the to-be-evaluated samples only need to be placed in a test container for preset time after a color spot-release rate colorimetric card is formed, then chromogenic reaction is performed by using wet potassium iodide test paper, and reading is performed by comparing the colorimetric card, so that operation is simple and easy; and especially when the chlorine dioxide release rate of a to-be-evaluated sample needs to be tracked for a long time, only simple potassium iodide test paper chromogenic reaction and comparison with a pre-prepared color spot-release rate colorimetric card need to be performed, so that evaluation work is greatly simplified and evaluation efficiency is improved. The method provided by the invention is easy to operate, low in cost and quick in result and is applicable to popularization and application.
Description
technical field [0001] The invention relates to the technical field of chlorine dioxide disinfection and sterilization, in particular to a method for evaluating the release rate of chlorine dioxide. Background technique [0002] Chlorine dioxide is a yellow to orange-red gas at room temperature, and has an irritating gas similar to chlorine gas. Soluble in water, with strong oxidizing properties. Chlorine dioxide has excellent performance in sterilizing bacteria, killing viruses, and removing harmful or odorous gases. It is the fourth generation of chlorine-containing disinfection after chlorine gas, sodium hypochlorite, calcium hypochlorite, sodium dichloroisocyanurate, and trichloroisocyanuric acid. agent, the development and application of chlorine dioxide has been developed rapidly. The concentration of chlorine dioxide directly affects its bactericidal performance, method of use and safety, so the concentration is a very critical indicator. On the other hand, chlorin...
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IPC IPC(8): G01N21/78G01N21/64
CPCG01N21/78G01N21/64G01N2021/7759
Inventor 尹齐和蔡娇刘亚军
Owner 广州超威生物科技有限公司
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