Kai-di YE, Min QIN, Wu FANG, Jun DUAN, Ke TANG, Fan-hao MENG, He-lu ZHANG, Pin-hua XIE, Wen-bin XU. Study on the Measurement of C6H6 in the 195~208 nm Band Based on Differential Absorption Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2021, 41(10): 3007
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 10, 3007 (2021)
Fig. 1. Measurement system
Fig. 2. Original absorption cross section at 190~300 nm (a —j ) and differential absorption cross section (k ) of C6H6
Fig. 3. Correlation matrices between C6H6 and other interference gas absorption cross sections
Fig. 4. Reference spectrum (a) and residual noise (b)
Fig. 5. Example of differential absorption spectrum measured in mixed gas experiment
Ratio of gas concentration SO2:C6H6:NH3=2:1:1
Ratio of gas concentration SO2:C6H6:NH3=2:1:1
Fig. 6. Retrieval results of mixed gas
Fig. 7. Example for C6H6 fitting at 195~208 and 240~260 nm
(Spectrum measured on January 14, 2019, 13:28)
(Spectrum measured on January 14, 2019, 13:28)
Fig. 8. Concentration distribution of C6H6 in a chemical park
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Table 1. Measurement result of C6H6
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