Unambiguous identification of N-containing oxygenated organic molecules using a chemical-ionization Orbitrap (CI-Orbitrap) in an eastern Chinese megacity
State Environmental Protection Key Laboratory of Formation and
Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental
Sciences, Shanghai 200233, China
School of Environmental Science and Engineering, Shanghai Jiao Tong
University, Shanghai 200240, China
Yingge Ma
State Environmental Protection Key Laboratory of Formation and
Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental
Sciences, Shanghai 200233, China
State Environmental Protection Key Laboratory of Formation and
Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental
Sciences, Shanghai 200233, China
State Environmental Protection Key Laboratory of Formation and
Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental
Sciences, Shanghai 200233, China
Sheng'ao Jing
State Environmental Protection Key Laboratory of Formation and
Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental
Sciences, Shanghai 200233, China
Yaqin Gao
State Environmental Protection Key Laboratory of Formation and
Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental
Sciences, Shanghai 200233, China
Hongli Wang
State Environmental Protection Key Laboratory of Formation and
Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental
Sciences, Shanghai 200233, China
Yanjun Zhang
Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON,
69626 Villeurbanne, France
Hui Chen
Shanghai Key Laboratory of Atmospheric Particle Pollution and
Prevention (LAP), Department of Environmental Science and
Engineering, Jiangwan Campus, Fudan University, Shanghai 200438, China
Yunhua Chang
Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters (CIC-FEMD), NUIST Center on Atmospheric
Environment, Nanjing University of Information Science and Technology,
Nanjing 210044, China
Naiqiang Yan
School of Environmental Science and Engineering, Shanghai Jiao Tong
University, Shanghai 200240, China
Shanghai Key Laboratory of Atmospheric Particle Pollution and
Prevention (LAP), Department of Environmental Science and
Engineering, Jiangwan Campus, Fudan University, Shanghai 200438, China
State Environmental Protection Key Laboratory of Formation and
Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental
Sciences, Shanghai 200233, China
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N-containing oxygenated organic molecules have been identified as important precursors of aerosol particles. We used an ultra-high-resolution mass spectrometer coupled with an online sample inlet to accurately measure their molecular composition, concentration level and variation patterns. We show their formation process and influencing factors in a Chinese megacity involving various volatile organic compound precursors and atmospheric oxidants, and we highlight the influence of PM2.5 episodes.
N-containing oxygenated organic molecules have been identified as important precursors of...