气候变化领域集成服务门户(CCPortal): The influence of the addition of isoprene on the volatility of particles formed from the photo-oxidation of anthropogenic-biogenic mixtures

CCPortal

DOI	10.5194/acp-22-13677-2022
	The influence of the addition of isoprene on the volatility of particles formed from the photo-oxidation of anthropogenic-biogenic mixtures
	Voliotis, Aristeidis; Du, Mao; Wang, Yu; Shao, Yunqi; Bannan, Thomas J.; Flynn, Michael; Pandis, Spyros N.; Percival, Carl J.; Alfarra, M. Rami; McFiggans, Gordon
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	13677
结束页码	13693
卷号	22 期号:20 页码:17
英文摘要	In this study, we investigate the influence of isoprene on the volatility of secondary organic aerosol (SOA) formed during the photo-oxidation of mixtures of anthropogenic and biogenic precursors. The SOA particle volatility was quantified using two independent experimental techniques (using a thermal denuder and the Filter Inlet for Gas and Aerosols iodide high-resolution time-of-flight Chemical Ionisation Mass Spectrometer - FIGAERO-CIMS) in mixtures of alpha-pinene/isoprene, o-cresol/isoprene, and alpha-pinene/o-cresol/isoprene. Single-precursor experiments at various initial concentrations and results from previous alpha-pinene/o-cresol experiments were used as a reference. The oxidation of isoprene did not result in the formation of detectable SOA particle mass in single-precursor experiments. However, isoprene-derived products were identified in the mixed systems, likely due to the increase in the total absorptive mass. The addition of isoprene resulted in mixture-dependent influence on the SOA particle volatility. Isoprene made no major change to the volatility of alpha-pinene SOA particles, though changes in the SOA particle composition were observed and the volatility was reasonably predicted based on the additivity. Isoprene addition increased o-cresol SOA particle volatility by similar to 5/15 % of the total mass/signal, respectively, indicating a potential to increase the overall volatility that cannot be predicted based on the additivity. The addition of isoprene to the alpha-pinene/o-cresol system (i.e. alpha-pinene/o-cresol/isoprene) resulted in slightly fewer volatile particles than those measured in the alpha-pinene/o-cresol systems. The measured volatility in the alpha-pinene/o-cresol/isoprene system had an similar to 6 % higher low volatile organic compound (LVOC) mass/signal compared to that predicted assuming additivity with a correspondingly lower semi-volatile organic compound (SVOC) fraction. This suggests that any effects that could increase the SOA volatility from the addition of isoprene are likely outweighed by the formation of lower-volatility compounds in more complex anthropogenic-biogenic precursor mixtures. Detailed chemical composition measurements support the measured volatility distribution changes and showed an abundance of unique-to-the-mixture products appearing in all the mixed systems accounting for around 30 %-40 % of the total particle-phase signal. Our results demonstrate that the SOA particle volatility and its prediction can be affected by the interactions of the oxidized products in mixed-precursor systems, and further mechanistic understanding is required to improve their representation in chemical transport models.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000870778300001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273514
作者单位	University of Manchester; University of Patras; Foundation for Research & Technology - Hellas (FORTH); Institute of Chemical Engineering Sciences (ICE-HT); California Institute of Technology; National Aeronautics & Space Administration (NASA); NASA Jet Propulsion Laboratory (JPL); UK Research & Innovation (UKRI); Natural Environment Research Council (NERC); NERC National Centre for Atmospheric Science; University of Manchester
推荐引用方式 GB/T 7714	Voliotis, Aristeidis,Du, Mao,Wang, Yu,et al. The influence of the addition of isoprene on the volatility of particles formed from the photo-oxidation of anthropogenic-biogenic mixtures[J],2022,22(20):17.
APA	Voliotis, Aristeidis.,Du, Mao.,Wang, Yu.,Shao, Yunqi.,Bannan, Thomas J..,...&McFiggans, Gordon.(2022).The influence of the addition of isoprene on the volatility of particles formed from the photo-oxidation of anthropogenic-biogenic mixtures.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(20),17.
MLA	Voliotis, Aristeidis,et al."The influence of the addition of isoprene on the volatility of particles formed from the photo-oxidation of anthropogenic-biogenic mixtures".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.20(2022):17.