气候变化领域集成服务门户(CCPortal): Detection of gaseous dimethylamine using vocus proton-transfer-reaction time-of-flight mass spectrometry

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DOI	10.1016/j.atmosenv.2020.117875
	Detection of gaseous dimethylamine using vocus proton-transfer-reaction time-of-flight mass spectrometry
	Wang Y.; Yang G.; Lu Y.; Liu Y.; Chen J.; Wang L.
发表日期	2020
ISSN	1352-2310
卷号	243
英文摘要	The newly developed Vocus proton-transfer-reaction time-of-flight mass spectrometer (Vocus PTR-TOF) is able to simultaneously detect hundreds of gaseous compounds including a big fraction of volatile organic compounds (VOCs) with outstanding mass resolution and sensitivity. Here, we present an application of Vocus PTR-TOF to monitor gaseous dimethylamine (DMA). The sensitivity towards DMA was improved by tuning the voltage settings of the segmented quadrupole following the molecular ion reactor to obtain a suitable ion transmission window. With the assistance of a permeation tube calibration method, the sensitivity of Vocus PTR-TOF for DMA detection was 2.68 cps pptv−1 at a TOF extraction frequency of 16 kHz and the detection limit was 1.44 pptv at 3σ of the background signal for a 1 min integration time. Laboratory experiments at a series of controlled relative humidity (RH) show that RH of the sample had little influences on the measurement of DMA. Vocus PTR-TOF with this hardware setup was deployed from December 2018 to January 2019 at Wangdu, Hebei Province, China. The temporal profile of C2-amines with a high time resolution was obtained, while the detection of VOCs remained successful. Such simultaneous measurements of these compounds are meaningful as these compounds are all relevant to aerosol nucleation and growth. Our results indicate that Vocus PTR-TOF can be a powerful tool in both field and laboratory studies for new particle formation research. © 2020 Elsevier Ltd
关键词	Dimethylamine New particle formation North China Plain Vocus PTR-TOF
语种	英语
scopus关键词	Amines; Humidity control; Mass spectrometers; Mass spectrometry; Volatile organic compounds; Aerosol nucleation; High-time resolution; Laboratory experiments; New particle formation; Proton transfer reactions; Simultaneous measurement; Time of flight mass spectrometry; Time-of-flight mass spectrometers; Proton transfer; amine; benzene; dimethylamine; toluene; volatile organic compound; aerosol composition; calibration; detection method; gas; hardware; mass spectrometry; nucleation; particle size; relative humidity; volatile organic compound; aerosol; Article; calibration; electric potential; humidity; limit of detection; priority journal; proton transfer reaction mass spectrometry; sensitivity analysis; time of flight mass spectrometry; China; Hebei
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248907
作者单位	Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environment Science and Engineering, Jiangwan Campus, Fudan University, Shanghai, 200438, China; Collaborative Innovation Center of Climate Change, Nanjing, 210023, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
推荐引用方式 GB/T 7714	Wang Y.,Yang G.,Lu Y.,et al. Detection of gaseous dimethylamine using vocus proton-transfer-reaction time-of-flight mass spectrometry[J],2020,243.
APA	Wang Y.,Yang G.,Lu Y.,Liu Y.,Chen J.,&Wang L..(2020).Detection of gaseous dimethylamine using vocus proton-transfer-reaction time-of-flight mass spectrometry.ATMOSPHERIC ENVIRONMENT,243.
MLA	Wang Y.,et al."Detection of gaseous dimethylamine using vocus proton-transfer-reaction time-of-flight mass spectrometry".ATMOSPHERIC ENVIRONMENT 243(2020).