气候变化领域集成服务门户(CCPortal): A large contribution of anthropogenic organo-nitrates to secondary organic aerosol in the Alberta oil sands

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DOI	10.5194/acp-19-12209-2019
	A large contribution of anthropogenic organo-nitrates to secondary organic aerosol in the Alberta oil sands
	Lee A.K.Y.; Adam M.G.; Liggio J.; Li S.-M.; Li K.; Willis M.D.; Abbatt J.P.D.; Tokarek T.W.; Odame-Ankrah C.A.; Osthoff H.D.; Strawbridge K.; Brook J.R.
发表日期	2019
ISSN	16807316
起始页码	12209
结束页码	12219
卷号	19 期号:19
英文摘要	The oil sands industry in Alberta, Canada, represents a large anthropogenic source of secondary organic aerosol (SOA). Atmospheric emissions from oil sands operations are a complex mixture of gaseous and particulate pollutants. Their interaction can affect the formation and characteristics of SOA during plume dispersion, but their chemical evolution remains poorly understood. Oxidative processing of organic vapours in the presence of NOx can lead to particulate organo-nitrate (pON) formation, with important impacts on the SOA budgets, the nitrogen cycle and human health. We provide the first direct field evidence, from ground- and aircraft-based real-time aerosol mass spectrometry, that anthropogenic pON contributed up to half of SOA mass that was freshly produced within the emission plumes of oil sands facilities. Using a top-down emission-rate retrieval algorithm constrained by aircraft measurements, we estimate the production rate of pON in the oil sands region to be ∼ 15.5 t d-1. We demonstrate that pON formation occurs via photo-oxidation of intermediate-volatility organic compounds (IVOCs) in high-NOx environments, providing observational constraints to improve current SOA modelling frameworks. Our ambient observations are supported by laboratory photo-oxidation experiments of IVOCs from bitumen vapours under high-NOx conditions, which demonstrate that pON can account for 30 %-55% of the observed SOA mass depending on the degree of photochemical ageing. The large contribution of pON to freshly formed anthropogenic SOA illustrates the central role of pON in SOA production from the oil and gas industry, with relevance for other urban and industrial regions with significant anthropogenic IVOC and NOx emissions. © 2019 Author(s).
语种	英语
scopus关键词	aerosol; algorithm; anthropogenic source; mass spectrometry; nitrate; oil sand; photochemistry; photooxidation; Alberta; Canada
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/144121
作者单位	Department of Civil and Environmental Engineering, National University of Singapore, Singapore, Singapore; NUS Environmental Research Institute, National University of Singapore, Singapore, Singapore; Air Quality Process Research Section, Environment and Climate Change Canada, Toronto, ON, Canada; Department of Chemistry, University of Toronto, Toronto, ON, Canada; Department of Department of Chemistry, University of Calgary, Calgary, AB, Canada; Chemical Sciences Division, Lawrence Berkeley National Lab, Berkeley, CA, United States
推荐引用方式 GB/T 7714	Lee A.K.Y.,Adam M.G.,Liggio J.,et al. A large contribution of anthropogenic organo-nitrates to secondary organic aerosol in the Alberta oil sands[J],2019,19(19).
APA	Lee A.K.Y..,Adam M.G..,Liggio J..,Li S.-M..,Li K..,...&Brook J.R..(2019).A large contribution of anthropogenic organo-nitrates to secondary organic aerosol in the Alberta oil sands.Atmospheric Chemistry and Physics,19(19).
MLA	Lee A.K.Y.,et al."A large contribution of anthropogenic organo-nitrates to secondary organic aerosol in the Alberta oil sands".Atmospheric Chemistry and Physics 19.19(2019).