Hua-Wei Jin, Ren-Zhi Hu, Pin-Hua Xie, Hao Chen, Zhi-Yan Li, Feng-Yang Wang, Yi-Hui Wang, Chuan Lin. Photo-acoustic technology applied to ppb level NO2 detection by using low power blue diode laser [J]. Acta Physica Sinica, 2019, 68(7): 070703-1
- Acta Physica Sinica
- Vol. 68, Issue 7, 070703-1 (2019)
Fig. 1. Schematic diagram of NO2-PAS system
NO2-PAS系统示意图
Fig. 2. Cross sections of NO2, H2O and diode laser spectrum
NO2和H2O的吸收截面以及蓝光二极管激光光谱
Fig. 3. Frequency response of the photo-acoustic cell光声池的频率响应
Fig. 4. Impact analysis of surface treatment and study of performance optimization表面处理影响分析及性能优化研究
Fig. 5. Comparative study of background noise between one buffer and two buffer单缓冲和两级缓冲对本底噪声的对比研究
Fig. 6. Performance evaluationof the system系统性能评估
Fig. 7. Analysis diagram of Allan varianceAllan方差分析图
Fig. 8. Air intake system of atmospheric NO2 concentrations
环境大气NO2的进气系统
Fig. 9. (a) Simultaneous measurement of atmospheric NO2 concentrations by PAS and CRDS systems; (b) correlation between the atmospheric NO2 concentrations measured by PAS and CRDS systems
(a) PAS系统和CRDS系统测得的环境大气NO2浓度; (b)PAS系统和CRDS系统NO2测量结果对比
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Table 1.
Comparison of test results.
测试结果比较
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