Long-term sub second-response monitoring of gaseous ammonia in ambient air by positive inhaling ion mobility spectrometry

	Long-term sub second-response monitoring of gaseous ammonia in ambient air by positive inhaling ion mobility spectrometry
	Hou, Keyong 1; Huang, Wei 1; Wang, Weiguo 1; Chen, Chuang 1; Li, Mei 1,3; Peng, Liying 1,3; Li, Hang 3,4; Liu, Jiwei 1,2; Li, Haiyang 1
刊名	TALANTA
	2017-12-01
卷号	175 页码:522-527
关键词	Ion mobility spectrometry Ammonia Fast response Sub-second time scale Long-term Monitoring
英文摘要	A real-time dynamic measurements of ammonia (NH3) is crucial for understanding the atmospheric nucleation process. A novel method was developed for on line monitoring at the sub-second time scale for the gaseous ammonia in ambient air for months, based on a positive inhaling ion mobility spectrometry (IMS) with a Ni-63 ion source. The selective detection of NH3 was achieved using a high resolution IMS with an optimization of the drift tube temperature above 150 degrees C. This method improved the peak-to-peak resolution significantly, thus avoided the interferences of the adjacent peaks to the quantitative analysis of NH3. The time resolution of the IMS was less than 0.1 s at a data averaging of 10 times. The limit of detection (LOD) achieved at sub-ppb level while a linear response of peak intensity versus concentration of NH3 in the range of 10-60 ppb and 60-400 ppb were obtained. The relative standard deviations (RSD), the confidence level and the errors were 1.06%, 95% and +/- 0.21 ppb by measuring 100 ppb NH3 for 100 times. The effect of ambient humidity could be greatly reduced by using the drift temperature of over 150 degrees C. At last, the application of measuring the NH3 concentration evolutions of Dalian city was performed from June 19 to December 3 in 2015. The results illustrated a potential method of using IMS for a real-time measuring atmospheric NH3 at an unprecedented accuracy and sensitivity with long-term stability.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Analytical
研究领域[WOS]	Chemistry
关键词[WOS]	IONIZATION MASS-SPECTROMETRY ; BRADBURY-NIELSEN-GATE ; ATMOSPHERIC AMMONIA ; ONLINE MEASUREMENT ; NITROGEN-DIOXIDE ; HIGH-RESOLUTION ; BREATH AMMONIA ; AMINES ; GAS ; SPECTROSCOPY
收录类别	SCI
语种	英语
WOS记录号	WOS:000412033100070
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/150085]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China 2.Liaoning Normal Univ, Dalian 116029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Key Lab Environm Opt & Technol, Anhui Inst Opt & Fine Mech, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Hou, Keyong,Huang, Wei,Wang, Weiguo,et al. Long-term sub second-response monitoring of gaseous ammonia in ambient air by positive inhaling ion mobility spectrometry[J]. TALANTA,2017,175:522-527.
APA	Hou, Keyong.,Huang, Wei.,Wang, Weiguo.,Chen, Chuang.,Li, Mei.,...&Li, Haiyang.(2017).Long-term sub second-response monitoring of gaseous ammonia in ambient air by positive inhaling ion mobility spectrometry.TALANTA,175,522-527.
MLA	Hou, Keyong,et al."Long-term sub second-response monitoring of gaseous ammonia in ambient air by positive inhaling ion mobility spectrometry".TALANTA 175(2017):522-527.