Shengyu Hu, Fei Wang, Haibin Cui. H2S Volume Fraction Monitoring Based on Characteristic Wavelength-Integrated Absorption Spectroscopy[J]. Laser & Optoelectronics Progress, 2024, 61(9): 0930005
- Laser & Optoelectronics Progress
- Vol. 61, Issue 9, 0930005 (2024)
Fig. 1. H2S absorption cross section in 200‒240 nm band
Fig. 2. Diagram of the H2S volume fraction measurement device based on UV absorption spectroscopy
Fig. 3. Absorbance curves for different volume fractions of H2S
Fig. 4. Linear fitting between different volume fractions and integral values
Fig. 5. Linear fitting of measured volume fraction and standard volume fraction
Fig. 6. Internal and external drawing of H2S measurement device
Fig. 7. Variation curve of light intensity signal at 215 nm
Fig. 8. Volume fraction and relative error measured by H2S instrument
Fig. 9. Diagram of on-site biogas transportation and instrument installation
Fig. 10. Diagram of on-site instrument installation and portable instrument
Fig. 11. H2S volume fraction change in on-site biogas
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Table 1. Measurement results of H2S volume fraction
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Table 2. Comparison of the volume fraction measured by portable instrument and online instrument
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