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DOI | 10.5194/acp-19-13591-2019 |
Secondary organic aerosol formation from photooxidation of furan: effects of NOx and humidity | |
Jiang, Xiaotong1; Tsona, Narcisse T.1; Jia, Long2; Liu, Shijie1; Zhang, Hailiang2; Xu, Yongfu2; Du, Lin1 | |
2019-11-08 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:21页码:13591-13609 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Atmospheric furan is a primary and secondary pollutant in the atmosphere, and its emission contributes to the formation of ultrafine particles. We investigate the effects of NOx level and humidity on the formation of secondary organic aerosol (SOA) generated from the photooxidation of furan in the presence of NaCl seed particles. SOA mass concentration and yield were determined under different NOx and humidity levels. A significant difference is observed both in the variation of SOA mass concentration and SOA yield with the initial experimental conditions. Varying VOC (volatile organic compound) = NOx ratios over the range 48.1 to 8.2 contributes to the effective formation of SOA in the presence of NaCl seed particles, with the SOA mass concentration and SOA yield ranging from 0.96 to 23.46 mu g m(-3) and from 0.04% to 1.01 %, respectively. We found that there was a favourable relationship between the SOA yields and NOx concentration. In particular, the increase in SOA yield with increasing NOx concentration was continuously observed at high NOx levels owing to a corresponding increase in the amount of low-volatility hydroxyl nitrates and dihydroxyl dinitrates that can partition into the particle phase. In addition, varying relative humidity (RH) from 5% to 88% increased the SOA yield from 1.01% to 5.03 %. The enhanced SOA formation from humid conditions may result from the high OH concentration, rapid furan decay rate, enhanced carbonyl-rich products condensation, and the aqueous-phase reactions. Using hybrid quadrupole-orbitrap mass spectrometer equipped with electrospray ionization (HESI-Q Exactive-Orbitrap MS), three carbonyl-rich products and three kinds of organonitrates were identified in the collected SOA. Based on the HESI-Q Exactive-Orbitrap MS analysis and Fourier transform infrared spectroscopy (FTIR), the reaction mechanism of furan photooxidation was proposed. This study demonstrates the effects of NOx and humidity on SOA formation during the furan-NOx-NaCl photooxidation and provides new insights into the oxidation regime and SOA composition in furan photooxidation. The results also illustrate the importance of studying SOA formation over a comprehensive range of environmental conditions. Only such evaluations can induce meaningful SOA mechanisms to be implemented in air quality models. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000496715400003 |
WOS关键词 | GAS-PHASE REACTIONS ; AMMONIUM-SULFATE PARTICLES ; BIOMASS BURNING EMISSIONS ; RELATIVE-HUMIDITY ; OH RADICALS ; ATMOSPHERIC DEGRADATION ; LIQUID WATER ; M-XYLENE ; INITIATED OXIDATION ; RATE CONSTANTS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/224047 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Shandong Univ, Environm Res Inst, Qingdao 266237, Shandong, Peoples R China; 2.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China |
推荐引用方式 GB/T 7714 | Jiang, Xiaotong,Tsona, Narcisse T.,Jia, Long,et al. Secondary organic aerosol formation from photooxidation of furan: effects of NOx and humidity[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(21):13591-13609. |
APA | Jiang, Xiaotong.,Tsona, Narcisse T..,Jia, Long.,Liu, Shijie.,Zhang, Hailiang.,...&Du, Lin.(2019).Secondary organic aerosol formation from photooxidation of furan: effects of NOx and humidity.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(21),13591-13609. |
MLA | Jiang, Xiaotong,et al."Secondary organic aerosol formation from photooxidation of furan: effects of NOx and humidity".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.21(2019):13591-13609. |
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