Standoff sub-ppb level measurement of atmospheric ammonia with calibration-free wavelength modulation spectroscopy

doi:10.1016/j.saa.2022.121929

	Standoff sub-ppb level measurement of atmospheric ammonia with calibration-free wavelength modulation spectroscopy
	Wang, Ruifeng 2,3; Peng, Jie 2,3; Chen, Jiajin 2; Ti, Chaopu 1; Wang, Guishi 2; Liu, Kun 2; Gao, Xiaoming 2,3
刊名	SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
	2023-02-05
卷号	286
关键词	Standoff sensor Ammonia Open-path Calibration-free WMS
ISSN号	1386-1425
DOI	10.1016/j.saa.2022.121929
通讯作者	Wang, Guishi(gswang@aiofm.ac.cn)
英文摘要	Ammonia (NH3) plays a significant role in the formation of atmospheric particulate matter, and influences on environmental and public health as well as climate change. Thus, it is important to sensitive measurement of atmospheric NH3. In the present work, a sub-ppb level standoff open-path NH3 sensor was developed for on line, sensitive measurement of atmospheric NH3. A 9.06 mu m distributed feedback quantum cascade laser was employed to probe the ammonia absorption lines located on fundamental rotational-vibrational absorption band and calibration-free wavelength modulation spectroscopy technique was employed to retrieve NH3 concentration directly. The standoff open-path NH3 sensor performance was investigated in laboratory corridor with 80 m open path length (Hefei, China) and a minimum detection limit of 0.46 ppb (3 sigma) was obtained. Finally, field campaign measurement was carried out in a winter wheat farmland (Changshu, China). Field measurement shown that the concentration of NH3 varies from 7 ppb to 30 ppb with an average of 14 ppb. The developed standoff sensor has high potential to be a robust tool for monitoring atmospheric NH3 or study of regional ammonia emissions in farmland or feedlot scale.
资助项目	National Key Research and Development Program of China ; National Natural Science Foundation of China ; [2018YFC0213304] ; [42075128]
WOS关键词	SURFACE-EXCHANGE ; OPEN-PATH ; FREQUENCY-MODULATION ; WINTER-WHEAT ; LASER ; FIELD ; SENSOR ; TEMPERATURE ; EMISSIONS ; NH3
WOS研究方向	Spectroscopy
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000868601600001
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/129404]
专题	中国科学院合肥物质科学研究院
通讯作者	Wang, Guishi
作者单位	1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Wang, Ruifeng,Peng, Jie,Chen, Jiajin,et al. Standoff sub-ppb level measurement of atmospheric ammonia with calibration-free wavelength modulation spectroscopy[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2023,286.
APA	Wang, Ruifeng.,Peng, Jie.,Chen, Jiajin.,Ti, Chaopu.,Wang, Guishi.,...&Gao, Xiaoming.(2023).Standoff sub-ppb level measurement of atmospheric ammonia with calibration-free wavelength modulation spectroscopy.SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,286.
MLA	Wang, Ruifeng,et al."Standoff sub-ppb level measurement of atmospheric ammonia with calibration-free wavelength modulation spectroscopy".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 286(2023).