Ammonia
; Atmospheric aerosols
; Atmospheric chemistry
; Atmospheric ionization
; Industrial emissions
; Ionization
; Loading
; Mass spectrometry
; Nitrogen oxides
; Selective catalytic reduction
; Chemical ionization
; Chemical ionization mass spectrometry
; Emission ratio
; HRToF-CIMS
; Meteorological condition
; Nucleation and growth
; Parts per trillion
; Yangtze river delta
; Amines
; amine
; ammonia
; hydronium ion
; methylamine
; nitrogen oxide
; aerosol composition
; air mass
; amino acid
; ammonia
; atmospheric pollution
; ionization
; mass spectrometry
; spatiotemporal analysis
; suburban area
; Article
; atmospheric deposition
; China
; gas analysis
; high resolution time of flight chemical ionization mass spectrometer
; high resolution time of flight chemical ionization mass spectrometry
; human
; humidity
; industrial area
; limit of detection
; mass spectrometer
; meteorology
; oxidation
; particulate matter
; proton transport
; time of flight mass spectrometry
; China
; Yangtze Delta
Scopus学科分类:
Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要:
Ammonia (NH3) and amines play important roles in the nucleation and growth of atmospheric aerosols. To identify the sources of these chemicals in the densely populated and industrialized Yangtze River Delta region of China, we conducted measurements of NH3 and several amines, including methylamine (CH3NH2), C2-amines (C2H7N), and C3-amines (C3H9N) at a suburban site of Nanjing, China, during summer 2012. Using a high-resolution time-of-flight chemical ionization mass spectrometer (HRToF-CIMS, Aerodyne), 1-min-averaged concentrations of NH3 and amines ranged from a few parts per trillions by volume (pptv) to dozens of parts per billion by volume (ppbv). The average±1σ concentrations of NH3 and total amines during the measurement period were 1.7±2.3ppbv and 7.2±7.4 pptv, respectively. Among the amines, C2-amines were the most abundant, accounting for 54% of the total amine loading. Significant correlations between NH3 and all three types of amines (0.65
Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing, China; Department of Environmental Toxicology, University of California, Davis, CA, United States; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science and Engineering, Fudan University, 220 Handan Road, Shanghai, China; Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ, United States
Recommended Citation:
Zheng J,, Ma Y,, Chen M,et al. Measurement of atmospheric amines and ammonia using the high resolution time-of-flight chemical ionization mass spectrometry[J]. Atmospheric Environment,2015-01-01,102