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DOI	10.5194/acp-20-10953-2020
	Oligomer and highly oxygenated organic molecule formation from oxidation of oxygenated monoterpenes emitted by California sage plants
	Mehra A.; Krechmer J.E.; Lambe A.; Sarkar C.; Williams L.; Khalaj F.; Guenther A.; Jayne J.; Coe H.; Worsnop D.; Faiola C.; Canagaratna M.
发表日期	2020
ISSN	1680-7316
起始页码	10953
结束页码	10965
卷号	20 期号:18
英文摘要	Plants emit a diverse range of biogenic volatile organic compounds (BVOCs) whose oxidation leads to secondary organic aerosol (SOA) formation. The majority of studies of biogenic SOA have focused on single or simple multicomponent BVOC mixtures thought to be representative of Northern hemispheric deciduous or mixed forest conditions. Gaps remain in our understanding of SOA formation from complex mixtures of real plant emissions in other environments. Towards the goal of understanding SOA in other regions, we conducted the first comprehensive study of SOA from oxygenated monoterpenes. These are the dominant emissions from the most common plant species in southern California's coastal sage ecosystem: black sage (Salvia mellifera) and California sagebrush (Artemisia californica). Emissions from sage plants, as well as single compounds representing their major emissions (camphor, camphene and eucalyptol), were oxidised in an Aerodyne potential aerosol mass oxidation flow reactor (PAM-OFR). The chemical composition of SOA was characterised using a high-resolution time-of-flight iodide-anion chemicalionisation mass spectrometer equipped with a Filter Inlet for Gases and AEROsols (FIGAERO-I-HR-ToF-CIMS) under low-and medium-NOx conditions. SOA from oxygenated monoterpenes showed a higherorder oligomer content and a greater presence of highly oxygenated organic molecules (HOMs) than non-oxygenated monoterpenes, with HOM contributing 27 %-47 % and 12 %-14 % of SOA product signal from oxygenated and nonoxygenated monoterpenes respectively. This study highlights the potential importance of oxygenated monoterpene emissions for SOA formation in woody shrub ecosystems. © 2020 Author(s).
语种	英语
scopus关键词	aerosol formation; biogenic emission; monoterpene; oxidation; shrub; volatile organic compound; Artemisia californica; Cordia polycephala; Dryobalanops; Salvia columbariae columbariae; Salvia mellifera
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/141090
作者单位	Centre for Atmospheric Science, School of Earth and Environmental Sciences, University of Manchester, Manchester, United Kingdom; Center for Aerosol and Cloud Chemistry, Aerodyne Research Inc., Billerica, MA, United States; Department of Earth System Science, University of California Irvine, Irvine, CA, United States; Department of Ecology and Evolutionary Biology, University of California Irvine, Irvine, CA, United States; Department of Chemistry, University of California, Irvine, Irvine, CA, United States
推荐引用方式 GB/T 7714	Mehra A.,Krechmer J.E.,Lambe A.,et al. Oligomer and highly oxygenated organic molecule formation from oxidation of oxygenated monoterpenes emitted by California sage plants[J],2020,20(18).
APA	Mehra A..,Krechmer J.E..,Lambe A..,Sarkar C..,Williams L..,...&Canagaratna M..(2020).Oligomer and highly oxygenated organic molecule formation from oxidation of oxygenated monoterpenes emitted by California sage plants.Atmospheric Chemistry and Physics,20(18).
MLA	Mehra A.,et al."Oligomer and highly oxygenated organic molecule formation from oxidation of oxygenated monoterpenes emitted by California sage plants".Atmospheric Chemistry and Physics 20.18(2020).