We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
基于紫外荧光光谱技术的 SO<sub>2</sub> 气体测量实验装置.
- Authors
余李志; 吴 琼; 梁荫杰; 龙 威; 王 娟; 邵 杰; 管祖光
- Abstract
According the absorption and fluorescence spectral properties of SO2 gas, an experimental device for SO2 gas measurement based on UV fluorescence spectroscopy is designed. The device uses a flashing xenon lamp and a lens to obtain a small beam of parallel light, and the excitation reaction of SO2 fluorescence is carried out in a fluorescence reaction chamber. The intensity of the excitation fluorescence is detected using a photomultiplier tube. The results shows that there is a good linear relationship between different concentrations of SO2 and the peak voltage signal of fluorescence intensity with a linearity better than 99.9%. The detection limit is 0.79 μg/m³ at an integration time of 164.7 s by Allan variance, which effectively achieved the detection of low concentration SO2. The device is compact, highly accurate and stable, and it can be used for continuous measurement of low concentration SO2 gas as well as for experimental teaching.
- Subjects
FLUORESCENCE spectroscopy; EXPERIMENTAL methods in education; DETECTION limit; FLUORESCENCE; XENON
- Publication
Experimental Technology & Management, 2023, Vol 40, Issue 3, p164
- ISSN
1002-4956
- Publication type
Article
- DOI
10.16791/j.cnki.sjg.2023.03.027