Journal of Atmospheric and Environmental Optics, Volume. 19, Issue 2, 175(2024)
Establishment of ozone- and nitrous oxide-based actinometry for quantifying vacuum ultra-violate radiation intensities and its application
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Fig. 1. Schematic of ultra-violet radiation intensities calibration instruments based on actinometry
Fig. 2. Nitrous oxide-based ultra-violet radiation intensities calibration results
Fig. 3. Ozone-based calibration of ultra-violet radiation intensities calibration results
Fig. 4. Calibration results of gaseous sulfuric acid during field measurement based on actinometry
Table 1. The value and uncertainty of reaction rate constant kn at 25 °C
View tableView in ArticleTable 1. The value and uncertainty of reaction rate constant kn at 25 °C
kn Reaction rate/(cm3·molecule-1·s-1) Uncertainty/% k2 4.0 × 10-11 ±5 k3 2.6 × 10-11 ±10 k5 7.2 × 10-11 ±10 k6 4.4 × 10-11 ±10 k7 < 1.0 × 10-12 ±10
Table 2. Uncertainty source of ultra-violet radiation intensities calibration based on actinometry
View tableView in ArticleTable 2. Uncertainty source of ultra-violet radiation intensities calibration based on actinometry
Uncertainty source Uncertainty/% Reference NOx concentration 2 NOx instrument (Thermo 17i) Cross section of N2O 2 Edwards G D, et al. 2003[ 20 ]Quantum yield of N2O < 1 Edwards G D, et al. 2003[ 20 ]Flowrate < 1 MKS MFC Reaction rate ～10 Atkinson R, et al. 2004[ 22 ]Overall N2O calibration method < 16 ― O3 concentration < 2 O3 instrument (Thermo 49i) Cross section of O2 ～60 Creasey D J, et al. 2000[ 26 ]Quantum yield of O3 ― Creasey D J, et al. 2000[ 26 ]Flowrate < 1 MKS MFC Reaction rate ― Burkholder J B, et al. 2015[ 27 ]Over all O3 calibration method > 60 ―
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Dongsen YANG, Wanying LI, Jiangyao CHEN, Xinran LIU, Jun ZHENG. Establishment of ozone- and nitrous oxide-based actinometry for quantifying vacuum ultra-violate radiation intensities and its application[J]. Journal of Atmospheric and Environmental Optics, 2024, 19(2): 175
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Received: Sep. 26, 2022
Accepted: --
Published Online: Jun. 24, 2024
The Author Email: Dongsen YANG (yangdongsen93@163.com)
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