NH3 aliasing absorption spectra at 1103.4 cm(-1) based on continuous quantum cascade laser
文献类型：期刊论文
| 作者 | Li Meng-Qi1,2; Zhang Yu-Jun2 ; He Ying2; You Kun2; Fan Bo-Qiang1,2; Yu Dong-Qi1,2; Xie Hao1,2; Lei Bo-En1,2; Li Xiao-Yi2; Liu Jian-Guo1,2
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| 刊名 | ACTA PHYSICA SINICA
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| 出版日期 | 2020-04-05 |
| 卷号 | 69 |
| ISSN号 | 1000-3290 |
| 关键词 | laser absorption spectrum quantum cascade laser line intensity concentration inversion |
| DOI | 10.7498/aps.69.20191832 |
| 通讯作者 | Zhang Yu-Jun(yjzhang@aiofm.ac.cn) |
| 英文摘要 | Due to the important role of NH3 in atmospheric aerosol chemistry, rapid and accurate inversion of ammonia concentration is very important for environmental issues. In this paper, a 9.05 mu m continuous quantum cascade laser (QCL) is used as the light source at room temperature, and the scanned-wavelength direct-absorption tunable diode laser absorption spectroscopy (TDLAS) is used to study the spectral characteristics of the QCL at 1103.4 cm(-1). A low-pressure experimental platform based on two-level temperature control was designed to measure the six aliasing absorption lines of ammonia at 1103.4 cm(-1). The broadening of spectral line becomes smaller under the condition of reducing the pressure, and the aliasing spectra are separated. The line strength of each absorption line is calculated, and the measurement uncertainty is further analyzed. A method for accurate inversion of single-spectrum gas concentration by low-pressure separation was proposed for severely aliased spectra, and experimental verification was performed. By comparing the results with the HITRAN database, it is concluded that the experimental measured line strength of ammonia gas at 1103.4 cm(-1) has a deviation from the database of. The uncertainty of the line intensity measurement is mainly related to the separation and extraction of aliasing absorbance, which is about 2.42%-8.92%. The deviation between the inversion concentration and the actual value under the condition of extreme low pressure is between 1% and 3%, while the calculated deviation of the line intensity value in the 2.71%-4.71% HITRAN database is about 3% to 5%. The results above indicate that the experimental data are reliable. The nonseparative aliasing spectral line method is used to invert the concentration at normal pressure, and the lowpressure separated single spectral line method is used to invert the concentration at low pressure. The results of the two are compared. The analysis results show that the low-pressure separation single-spectrum spectral line inversion concentration value has smaller deviation and higher accuracy from the original concentration. The study of this method provides reference for future inversion of gas concentrations inversion in the atmospheric environment and other fields. |
| WOS关键词 | AMMONIA |
| 资助项目 | Young ScientistsFund of the National Natural Science Foundation of China[41805124] ; Chinese Academy of Sciences Equipment Development Project, China[YJKYYQ20190051] ; Key Research and Development Plan of Anhui Province, China[201904a07020093] ; General Project of Anhui Natural Science Foundation, China[1808085MD107] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | CHINESE PHYSICAL SOC |
| WOS记录号 | WOS:000527806200006 |
| 资助机构 | Young ScientistsFund of the National Natural Science Foundation of China ; Chinese Academy of Sciences Equipment Development Project, China ; Key Research and Development Plan of Anhui Province, China ; General Project of Anhui Natural Science Foundation, China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/103387]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhang Yu-Jun |
| 作者单位 | 1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Meng-Qi,Zhang Yu-Jun,He Ying,et al. NH3 aliasing absorption spectra at 1103.4 cm(-1) based on continuous quantum cascade laser[J]. ACTA PHYSICA SINICA,2020,69. |
| APA | Li Meng-Qi.,Zhang Yu-Jun.,He Ying.,You Kun.,Fan Bo-Qiang.,...&Liu Wen-Qing.(2020).NH3 aliasing absorption spectra at 1103.4 cm(-1) based on continuous quantum cascade laser.ACTA PHYSICA SINICA,69. |
| MLA | Li Meng-Qi,et al."NH3 aliasing absorption spectra at 1103.4 cm(-1) based on continuous quantum cascade laser".ACTA PHYSICA SINICA 69(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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