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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
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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. |
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