Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for quickly detecting concentration of chlorine dioxide gas in air

A technology of chlorine dioxide and gas, which is applied in the direction of chemiluminescence/bioluminescence, and analysis by making materials undergo chemical reactions, and can solve problems that cannot meet practical applications, cannot control chlorine dioxide gas in time, and detection method hysteresis

Inactive Publication Date: 2012-11-21
ZHONGBEI UNIV
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this method is that the test value is relatively accurate, and its disadvantages: first, it is only suitable for the detection of high concentration of chlorine dioxide in the air, and it is powerless for the detection of low concentration of chlorine dioxide; second, it cannot realize rapid on-site detection, so it cannot be controlled in time Chlorine dioxide gas in the ambient air of related spaces, the detection method has hysteresis, which cannot meet the practical application

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for quickly detecting concentration of chlorine dioxide gas in air
  • Method for quickly detecting concentration of chlorine dioxide gas in air
  • Method for quickly detecting concentration of chlorine dioxide gas in air

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: instrument background signal detection

[0038]The sensor is the SFH530-R ultraviolet light sensor of OSRAM Company in Germany, which is used as the acquisition device of the optical signal. The SFH530-R UV sensor has the characteristics of small size, sensitive detection of UV light, low power consumption, and long life. Its main response area covers the wavelength range of long-wave ultraviolet (400nm-315nm) and medium-wave ultraviolet (315nm-280nm). The signal noise generated by the sensor itself is included in the output signal, which will cause errors in the test results. The background signal is mainly related to the working time and temperature of the sensor. The invention conducts the test at room temperature to obtain the change rule of the background signal intensity of the sensor with time, so as to eliminate the influence of the background signal on the measurement result from the output signal in the actual test. The gas-phase chemiluminesce...

Embodiment 2

[0041] Example 2 Variation law of light signal intensity of chemiluminescence reaction under different pressures

[0042] Since the pressure in the reaction chamber has an important influence on the gas-phase chemiluminescent reaction, the temperature condition of the present invention is room temperature, H 2 The purity of S gas is 99.5%, and the flow rate is 60ml / min; ClO 2 The concentration is about 60mg / L, the flow rate is 300ml / min; the pressure in the reaction chamber is 0.1MPa, 0.09MPa, 0.08MPa, 0.07MPa, 0.06MPa, 0.05MPa; the sensor acquisition frequency is 500Hz, and the acquisition time is 5s. Repeat 5 times for different pressure conditions, and the test results take the average value of 5 times. Import the obtained average value data into the computer for processing, and use OriginPro8.0 to draw the change curve of the chemiluminescence intensity with time under different pressures, such as Figure 3-8 Shown is the variation curve of the chemiluminescence intensit...

Embodiment 3

[0044] Embodiment 3 The influence of reaction gas flow rate on luminous intensity

[0045] The gas flow rate has a direct impact on the mixing effect of the two gases in the reaction chamber, thereby indirectly affecting the efficiency of the luminescent reaction. Therefore, the present invention is at room temperature and the pressure in the reaction chamber is 0.06MPa; H 2 The purity of S gas is 95%, and the flow rate is 50mL / min; ClO 2 The concentration was 60mg / L, the flow rates were 100mL / min, 200mL / min, 300mL / min, 400mL / min and 500mL / min; the collection frequency was 500Hz, and the collection time was 5s. Repeat 5 times for different gas flow rates, and the test results take the average value of 5 times. Import the obtained average data into the computer for processing, and use OriginPro8.0 to draw different ClO 2 The change curve of chemiluminescence intensity with time at the flow rate, such as Figure 9-13 Shown: as ClO 2 The curves of chemiluminescence intensity ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for quickly detecting concentration of chlorine dioxide gas in air. The method comprises the following steps: mixing ClO2 gas and H2S gas in a reacting chamber under a certain condition, wherein S atoms produced by the reaction of H2S and ClO2 under gas phase are recombined to generate S2* at an electron excitation state, and the S2* has fluorescence during returning, and chemical lighting is generated; the equation is shown in the description: the wave length of emitting light of the S2* is ranged from 250 to 460nm; (2) selecting a sensor in a proper wavelength detecting range according to the chemical lighting reacting properties of ClO2 gas and H2S gas; acquiring and recording the light strength in the lighting reaction, wherein the relationship between the chemical lighting strength and the concentration of the reactants under a certain outside condition can be shown in the description, wherein ICL means the functions of the wavelength lambda and the time t, and also means the chemical lighting strength of a photon with wavelength of lambda at the time 5; gamma means the light receiving efficiency of the sensor; phi CL means the lighting efficiency in the mechanical reaction; and dcA / dt and dcB / dt are respectively the reacting rates of two reactants. The method disclosed by the invention is applied to detecting the concentration of chlorine dioxide within the range from 60-140mg / L, and can achieve quick detecting on site.

Description

technical field [0001] The invention belongs to the technical field of relatively closed space environment detection. In particular, it relates to a method for rapidly detecting the gas chlorine dioxide concentration in the air. Background technique [0002] Among the major infectious diseases in the world at present, airborne ones account for the first place among various infectious diseases. Therefore, air disinfection is an important measure to prevent and control the source of infection and prevent cross-infection. It is especially important to carry out air preventive disinfection and terminal disinfection in public places with relatively large spaces such as hospitals and libraries where people are relatively concentrated. Effective air disinfection can kill airborne particles within a certain period of time. Pathogenic microorganisms can play a key role in the process of disease prevention and control. [0003] As a strong oxidizing agent and highly effective disin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N21/76
Inventor 晋日亚赵海霞胡双启崔超
Owner ZHONGBEI UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com