首页|Reaction Kinetics and Secondary Organic Aerosol Composition Analysis of 2-Cyclohexen-1-one with NO3 Radicals
Reaction Kinetics and Secondary Organic Aerosol Composition Analysis of 2-Cyclohexen-1-one with NO3 Radicals
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Unsaturated ketones are typical oxygenated volatile organic compounds(OVOCs)with high reactivity,and are important precursors in air pollution.The sources of OVOCs are complex and include direct emissions and secondary oxidation formation of VOCs in the atmosphere.2-Cyclohexen-1-one is a widespread substance,and is derived from the industrial catalytic oxidation of cyclohexene.In this paper,we investigated the rate constants of the chemical reactions of 2-cyclohexen-1-one with NO3 radicals,which is(7.25±0.29)×10-15 cm3·molecule-1·s-1 at 298 K and under 1 atm(1 atm=101325Pa).It supplemented the kinetics of NO3 radicals database,and revealed its effects in the nighttime atmosphere.In addition,the reaction products of 2-cyclohexen-1-one with N03 radicals were detected by Fourier transform ion cyclotron resonance mass spectrometry(FT-ICR MS),which revealed a series of nitrate esters in the composition of the secondary organic aerosol(SOA),which may reduce atmospheric visibility.Finally,the possible pathways for the generation of the products were developed.
HU Lin、TONG Shengrui、XU Yanyong、ZHANG Hailiang、YU Shanshan、CHEN Meifang、GE Maofa
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Structural Chemistry of Unstable and Stable Species,Chinese Academy of Sciences Research/Education Center for Excellence in Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,P.R.China
College of Ecology and Environment,Xinjiang University,Urumqi 830017,P.R.China
University of Chinese Academy of Sciences,Beijing 100049,P.R.China
National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFund of the Beijing National Laboratory for Molecular Sciences,ChinaProject of the Youth Innovation Promotion Association of Chinese Academy of Sciences
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