Journal of Atmospheric and Environmental Optics, Volume. 19, Issue 4, 391(2024)
Research progress of measuring ammonia emission using infrared spectroscopy
Figures & Tables(7)
![The mid-infrared sensor platform based on amplitude modulated photo-acoustic spectroscopy for atmospheric NH3 detection[24]](/Images/icon/loading.gif){kind=icon}
Fig. 1. The mid-infrared sensor platform based on amplitude modulated photo-acoustic spectroscopy for atmospheric NH3 detection[24]
Fig. 2. Schematic diagram of laser control and signal processing part (a) and open path and closed path (b) for atmospheric trace gas measurement system [26]
Fig. 3. Diagram of optical design entity (a) and complete structure fully non-cryogenic of the instrument (b) for NH3 measurement[27]
Fig. 4. System construction of long range NH3 online spectral detection system[30]
Fig. 5. The bLS method for estimating tracer emission rate (QbLS)[30]
Fig. 6. Locations of experimental pen and instruments in this study[17]
Table 1. Summary of NH3 optical measurement technologies
View tableView in ArticleTable 1. Summary of NH3 optical measurement technologies
技术
原理
特点及适应范围 参考文献 有效
光程
波段 测量周期 探测极限 FTIR 可以同时测量多种气体, 采用开放光路设计,
可以测量同时测量点源和面源;
价格昂贵, 仪器体积较大, 响应时间较慢。
[ 12 ]2 km 1034-1074 cm-1 ― 1 × 10-6 [ 13 ]96 m 1350 cm-1 20 min 8 × 10-9 [ 15 ]250 m 950 nm ― 1× 10-9 [ 16 ]― 900-1000 cm-1 > 6 s 7 × 10-9 [ 17 ]100 m 950 nm ― 0.04 × 10-9 PAS 探测限低, 适用于点源测量;
需采样, 易吸附, 存在干扰;
较难同时保证高的探测灵敏度和快的响应时间;
需要对腔进行高精度的压力控制。
[ 19 ]― 1.53 μm > 1 s 0.65 × 10-6 [ 21 ]1531.7 nm 60 s 8 × 10-9 [ 22 ]1532 nm 95 s 6 × 10-9 [ 23 ]1531.7 nm 60 s 3 × 10-9 [ 24 ]1040 nm 300 s 1 × 10-9 TDLAS 响应迅速, 适应于点源和面源在线测量;
探测灵敏度不够高;
采用谐波调制时要用到样气标定会引入吸附误差。
[ 8 ]10 m 1500 nm > 10 s 0.054 × 10-6 [ 26 ]210 m 10.36 μm 1 s 0.05 × 10-9 [ 27 ]76 m 10.34 μm 1 s 0.02 × 10-9 [ 28 ]76 m 10.34 μm 1 s 0.23 × 10-9 [ 29 ]― 9062 nm 0.05 s ― [ 30 ]24.32 m 1531.7 nm > 9 s 0.048 × 10-6 [ 31 ]― 6568.4 cm-1 ― 1 × 10-9 [ 32 ]1.6 × 104 m 6521.97 cm-1 1 min 0.39 × 10-9
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Yu WANG, Guishi WANG, Jun LI, Xianke ZHANG, Xiaoming GAO. Research progress of measuring ammonia emission using infrared spectroscopy[J]. Journal of Atmospheric and Environmental Optics, 2024, 19(4): 391
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Received: Jul. 22, 2021
Accepted: --
Published Online: Jan. 8, 2025
The Author Email: Guishi WANG (gswang@aiofm.ac.cn)
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