气候变化领域集成服务门户(CCPortal): Coal and biomass burning as major emissions of NOX in Northeast China: Implication from dual isotopes analysis of fine nitrate aerosols

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DOI	10.1016/j.atmosenv.2020.117762
	Coal and biomass burning as major emissions of NOX in Northeast China: Implication from dual isotopes analysis of fine nitrate aerosols
	Zhao Z.-Y.; Cao F.; Fan M.-Y.; Zhang W.-Q.; Zhai X.-Y.; Wang Q.; Zhang Y.-L.
发表日期	2020
ISSN	1352-2310
卷号	242
英文摘要	In recent years, there are still huge amounts of NOx emissions in the Northeast, and this inevitably increases the concentration of aerosol nitrate (NO3−), which plays an important role in atmospheric pollution. Because of the mixed sources of atmospheric NO3−, it is difficult to quantify their contribution, and the use of certain means to identify their sources and pathways is critical to developing effective control measures. Since different sources of NOX have different ranges of δ15N values, δ15N is considered to be a useful tool for identifying the source of aerosol NO3−. But isotope fractionation occurs during the conversion of NOX to NO3−, and δ18O can be used to estimate its isotope fractionation value. In this study, daily PM2.5 samples were collected in four seasons from Northeast China, and their water-soluble ionic components (WSIs), δ15N–NO3- and δ18O–NO3- were analyzed. The isotope fractionation value of δ15N in which NOX was converted to NO3− was estimated and the contribution of different sources was quantified in combination with the Bayesian model. The results showed that NO3− was the most important inorganic ion component in the WSIs with the highest annual average ratio of 21.1%. Both δ15N and δ18O showed higher in winter (δ15N: 13.79‰±2.17‰; δ18O: 70.50‰±10.02‰) than in summer (δ15N: 2.69‰±2.95‰; δ18O: 58.67‰±4.52‰). The daytime OH[rad] pathway was considered to play a leading role in nitrate formation, with the annual average contribution of 61.0 ± 18.8%. NOx was mainly from the contribution of coal combustion (34.5%) and biomass burning (34.3%) followed by traffic (19.5%) and biological soil (11.7%). During heating periods, NOx was dominated by coal combustion with the average contribution of 46.9% whereas biomass burning was the most important contributor during non-heating periods (39.5%). Therefore, controlling coal consumption and biomass burning can drastically reduce concentration of aerosol NO3− in Northeast China. © 2020 Elsevier Ltd
关键词	Aerosol Formation Nitrate Sources Stable isotope
语种	英语
scopus关键词	Aerosols; Air pollution; Bayesian networks; Biomass; Coal; Isotopes; Nitrates; Nitrogen oxides; Aerosol nitrates; Atmospheric pollution; Biomass-burning; Coal consumption; Control measures; Ionic component; Isotope fractionation; Nitrate aerosols; Coal combustion; calcium; coal; magnesium; nitrate; nitric oxide; aerosol; atmospheric pollution; biomass burning; coal combustion; isotopic analysis; isotopic fractionation; nitrate; nitrous oxide; aerosol; Article; autumn; biomass; China; combustion; heating; isotope analysis; nitrous oxide emission; particulate matter; priority journal; seasonal variation; spring; summer; traffic; winter; China
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248928
作者单位	Yale-NUIST Center on Atmospheric Environment, International Joint Laboratory on Climate and Environment Change, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Key Laboratory Meteorological Disaster, Ministry of Education & Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disaster, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Jiangsu Provincial Key Laboratory of Agricultural Meteorology, College of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China
推荐引用方式 GB/T 7714	Zhao Z.-Y.,Cao F.,Fan M.-Y.,et al. Coal and biomass burning as major emissions of NOX in Northeast China: Implication from dual isotopes analysis of fine nitrate aerosols[J],2020,242.
APA	Zhao Z.-Y..,Cao F..,Fan M.-Y..,Zhang W.-Q..,Zhai X.-Y..,...&Zhang Y.-L..(2020).Coal and biomass burning as major emissions of NOX in Northeast China: Implication from dual isotopes analysis of fine nitrate aerosols.ATMOSPHERIC ENVIRONMENT,242.
MLA	Zhao Z.-Y.,et al."Coal and biomass burning as major emissions of NOX in Northeast China: Implication from dual isotopes analysis of fine nitrate aerosols".ATMOSPHERIC ENVIRONMENT 242(2020).