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Odorous emission monitoring based on differential optical absorption spectroscopy
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Paper Abstract

In this paper, based on the analysis of the shortcomings of three-point comparison odor bag method, gas chromatography method and gas sensor, a malodorous gas monitoring device based on differential optical absorption spectroscopy (DOAS) is designed. This paper focuses on testing six gases, including carbon disulfide, styrene, dimethyl disulfide and so on. The total length of the optical path is 60cm. When the standard deviation is twice, the detection limit of these gases is around 0.10ppm. The results of mixed malodorous by measured show that the interference between components is very small, and the relative error of each component is less than 3% of the full scale by least square method. The odor gas emission monitoring device based on DOAS technology designed in this paper has the advantages of simple device and high measurement accuracy, which can meet the application requirements of field measurement.

Paper Details

Date Published: 18 November 2019
PDF: 6 pages
Proc. SPIE 11189, Optical Metrology and Inspection for Industrial Applications VI, 111891D (18 November 2019); doi: 10.1117/12.2537480
Show Author Affiliations
Rui Xue, China National Environmental Monitoring Ctr. (China)
Mingxuan Li, China National Environmental Monitoring Ctr. (China)
Xiaohong Han, Hangzhou Chunlai Technology Co., Ltd. (China)
Jie Guo, Hangzhou Chunlai Technology Co., Ltd (China)
Han Zhang, Hangzhou Chunlai Technology Co., Ltd (China)


Published in SPIE Proceedings Vol. 11189:
Optical Metrology and Inspection for Industrial Applications VI
Sen Han; Toru Yoshizawa; Song Zhang; Benyong Chen, Editor(s)

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