Amplitude-Modulated Cavity-Enhanced Absorption Spectroscopy with Phase-Sensitive Detection: A New Approach Applied to the Fast and Sensitive Detection of NO2 | |
Zhou, Jiacheng5,6; Zhao, Weixiong6; Zhang, Yang6; Fang, Bo6; Cheng, Feihu6; Xu, Xuezhe6; Ni, Shichuan5,6; Zhang, Weijun5,6; Ye, Chunxiang4; Chen, Weidong3 | |
刊名 | ANALYTICAL CHEMISTRY
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2022-02-10 | |
ISSN号 | 0003-2700 |
DOI | 10.1021/acs.analchem.1c05484 |
通讯作者 | Zhao, Weixiong(wxzhao@aiofm.ac.cn) ; Zhang, Weijun(wjzhang@aiofm.ac.cn) |
英文摘要 | Accurate and sensitive measurements of NO2 play an extremely important role in atmospheric studies. Increasingly, studies require NO2 measurements with parts per trillion by volume (pptv-level) detection limits. Other desirable instrument attributes include ease of use, long-term stability, and low maintenance. In this work, we report the development of an amplitude-modulated multimode-diodelaser-based cavity-enhanced absorption spectroscopy (AM-CEAS) system operating at 406 nm that uses phase-sensitive detection for extremely sensitive NO2 detection. The laser was TTL-modulated at 35 kHz. The mirror reflectivity was determined to be 99.985% based on the ring-down time measurement. The cavity base length was 47.5 cm, giving an effective absorption pathlength of similar to 3.26 km. AM-CEAS achieved a 1 sigma detection precision of 35 pptv in a 1 s data acquisition time (4.98 x 10(-10) cm(-1)), over 4 times lower than that attained using a ring down approach and the same optical system. The AM-CEAS precision improved to 8 pptv over a data acquisition time of 30 s (1.14 x 10(-10) cm(-1)). The AM-CEAS method with the multimode diode laser integrates the advantages of high light injection efficiency like on-axis alignment cavity ring-down spectroscopy, low cavity-mode noise like off-axis alignment CEAS, and narrow-bandwidth high-sensitivity weak signal detection of modulation spectroscopy, providing a powerful, straightforward, and general method for ultrasensitive absorption and extinction measurements. |
资助项目 | National Natural Science Foundation of China[42022051] ; National Natural Science Foundation of China[U21A2028] ; National Natural Science Foundation of China[41627810] ; Second Tibetan Plateau Scientific Expedition and Research program[2019QZKK0606] ; Youth Innovation Promotion Association CAS[Y202089] ; Instrument Developing Project of the Chinese Academy of Sciences[YJ-KYYQ20180049] ; HFIPS Director's Fund[YZJJ202101] ; HFIPS Director's Fund[BJPY2019B02] |
WOS关键词 | RING-DOWN SPECTROSCOPY ; SPECTROMETER TD-CRDS ; CHEMICAL AMPLIFICATION ; NITROGEN-DIOXIDE ; PEROXY-RADICALS ; MIXING RATIOS ; AMBIENT NO2 ; REAL-TIME ; IN-SITU ; CHEMISTRY |
WOS研究方向 | Chemistry |
语种 | 英语 |
出版者 | AMER CHEMICAL SOC |
WOS记录号 | WOS:000758067100001 |
资助机构 | National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research program ; Youth Innovation Promotion Association CAS ; Instrument Developing Project of the Chinese Academy of Sciences ; HFIPS Director's Fund |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/127948] ![]() |
专题 | 中国科学院合肥物质科学研究院 |
通讯作者 | Zhao, Weixiong; Zhang, Weijun |
作者单位 | 1.Univ Coll, Sch Chem, Cork T23 XE10, Ireland 2.Univ Coll, Environm Res Inst, Cork T23 XE10, Ireland 3.Univ Littoral Cote dOpale, Lab Physicochim Atmosph, F-59140 Dunkerque, France 4.Peking Univ, Coll Environm Sci & Engn, Beijing 100871, Peoples R China 5.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 6.Chinese Acad Sci, Lab Atmospher Physicochem, Anhui Inst Opt & Fine Mech, HFIPS, Hefei 230031, Anhui, Peoples R China |
推荐引用方式 GB/T 7714 | Zhou, Jiacheng,Zhao, Weixiong,Zhang, Yang,et al. Amplitude-Modulated Cavity-Enhanced Absorption Spectroscopy with Phase-Sensitive Detection: A New Approach Applied to the Fast and Sensitive Detection of NO2[J]. ANALYTICAL CHEMISTRY,2022. |
APA | Zhou, Jiacheng.,Zhao, Weixiong.,Zhang, Yang.,Fang, Bo.,Cheng, Feihu.,...&Venables, Dean S..(2022).Amplitude-Modulated Cavity-Enhanced Absorption Spectroscopy with Phase-Sensitive Detection: A New Approach Applied to the Fast and Sensitive Detection of NO2.ANALYTICAL CHEMISTRY. |
MLA | Zhou, Jiacheng,et al."Amplitude-Modulated Cavity-Enhanced Absorption Spectroscopy with Phase-Sensitive Detection: A New Approach Applied to the Fast and Sensitive Detection of NO2".ANALYTICAL CHEMISTRY (2022). |
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