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DOI	10.5194/acp-22-14147-2022
	Chamber investigation of the formation and transformation of secondary organic aerosol in mixtures of biogenic and anthropogenic volatile organic compounds
	Voliotis, Aristeidis; Du, Mao; Wang, Yu; Shao, Yunqi; Alfarra, M. Rami; Bannan, Thomas J.; Hu, Dawei; Pereira, Kelly L.; Hamilton, Jaqueline F.; Hallquist, Mattias; Mentel, Thomas F.; McFiggans, Gordon
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	14147
结束页码	14175
卷号	22 期号:21 页码:29
英文摘要	A comprehensive chamber investigation of photochemical secondary organic aerosol (SOA) formation and transformation in mixtures of anthropogenic (o-cresol) and biogenic (alpha-pinene and isoprene) volatile organic compound (VOC) precursors in the presence of NOx and inorganic seed particles was conducted. To enable direct comparison across systems, the initial concentration (hence reactivity) of the systems towards the dominant OH oxidant was adjusted. Comparing experiments conducted in single-precursor systems at various initial reactivity levels (referenced to a nominal base case VOC concentration, e.g. halving the initial concentration for a 1/2 initial reactivity experiment) as well as their binary and ternary mixtures, we show that the molecular interactions from the mixing of the precursors can be investigated and discuss challenges in their interpretation. The observed average SOA particle mass yields (the organic particle mass produced for a mass of VOC consumed) in descending order were found for the following systems: alpha-pinene (32 +/- 7 %), alpha-pinene-o-cresol (28 +/- 9 %), alpha-pinene at 1/2 initial reactivity (21 +/- 5 %), alpha-pinene-isoprene (16 +/- 1 %), alpha-pinene at 1/3 initial reactivity (15 +/- 4 %), o-cresol (13 +/- 3 %), alpha-pinene-o-cresol-isoprene (11 +/- 4 %), o-cresol at 1/2 initial reactivity (11 +/- 3 %), o-cresol-isoprene (6 +/- 2 %), and isoprene (0 +/- 0 %). We find a clear suppression of the SOA mass yield from alpha-pinene when it is mixed with isoprene, whilst no suppression or enhancement of SOA particle yield from o-cresol was found when it was similarly mixed with isoprene. The alpha-pinene-o-cresol system yield appeared to be increased compared to that calculated based on the additivity, whilst in the alpha-pinene-o-cresol-isoprene system the measured and predicted yields were comparable. However, in mixtures in which more than one precursor contributes to the SOA particle mass it is unclear whether changes in the SOA formation potential are attributable to physical or chemical interactions, since the reference basis for the comparison is complex. Online and offline chemical composition as well as SOA particle volatility, water uptake, and phase behaviour measurements that were used to interpret the SOA formation and behaviour are introduced and detailed elsewhere.
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:000878595600001
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/273544
作者单位	University of Manchester; University of Manchester; University of York - UK; University of Gothenburg; Helmholtz Association; Research Center Julich; Qatar Foundation (QF); Hamad Bin Khalifa University-Qatar; Qatar Environment & Energy Research Institute; Swiss Federal Institutes of Technology Domain; ETH Zurich; University of Birmingham; Bournemouth University
推荐引用方式 GB/T 7714	Voliotis, Aristeidis,Du, Mao,Wang, Yu,et al. Chamber investigation of the formation and transformation of secondary organic aerosol in mixtures of biogenic and anthropogenic volatile organic compounds[J],2022,22(21):29.
APA	Voliotis, Aristeidis.,Du, Mao.,Wang, Yu.,Shao, Yunqi.,Alfarra, M. Rami.,...&McFiggans, Gordon.(2022).Chamber investigation of the formation and transformation of secondary organic aerosol in mixtures of biogenic and anthropogenic volatile organic compounds.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(21),29.
MLA	Voliotis, Aristeidis,et al."Chamber investigation of the formation and transformation of secondary organic aerosol in mixtures of biogenic and anthropogenic volatile organic compounds".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.21(2022):29.