气候变化领域集成服务门户(CCPortal): The importance of coal combustion and heterogeneous reaction for atmospheric nitrate pollution in a cold metropolis in China: Insights from isotope fractionation and Bayesian mixing model

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DOI	10.1016/j.atmosenv.2020.117730
	The importance of coal combustion and heterogeneous reaction for atmospheric nitrate pollution in a cold metropolis in China: Insights from isotope fractionation and Bayesian mixing model
	Sun X.; Zong Z.; Wang K.; Li B.; Fu D.; Shi X.; Tang B.; Lu L.; Thapa S.; Qi H.; Tian C.
发表日期	2020
ISSN	13522310
卷号	243
英文摘要	Haze pollution in Harbin has been gradually alleviated in recent years, but it is still far from eliminated. Thus, precise and effective emission abatement of main chemical components like nitrate is urgently needed for further haze pollution control. This study aimed to estimate nitrate formation pathways, and the contributions of the emission sources of nitrogen oxide in urban Harbin, based on the measurement of isotope signatures in nitrate and the utilization of an improved Bayesian mixing model. The results showed that nitrate significantly aggravated particulate pollution in the heating season, and its driving role was enhanced as the pollution level increased. This study suggested that homogeneous reaction and heterogeneous reaction were the dominant conversion pathways of nitrate formation in non-heating season and heating season respectively, and the contribution of heterogeneous reaction increased as pollution levels increased. By considering isotope fractionation value (δ15N), this paper emphasized coal combustion as the dominant contributor of nitrogen oxide in urban Harbin, while biomass burning, mobile sources, and biogenic soil emissions played relatively weak roles in nitrate pollution. This study has critical importance to provide scientific theoretical bases for nitrogen oxide reduction in urban Harbin and air quality improvement reference in other severely polluted regions in China. © 2020 Elsevier Ltd
英文关键词	Haze alleviation; Heating season; Oxidation pathways assessment; Pollution levels; Source apportionment
语种	英语
scopus关键词	Air quality; Isotopes; Mixing; Nitrates; Nitrogen oxides; Pollution control; Soil pollution; Air quality improvement; Atmospheric nitrates; Emission abatement; Heterogeneous reactions; Homogeneous reaction; Isotope fractionation; Nitrogen oxide reduction; Particulate pollution; Coal combustion; coal; isotope; nitrate; nitrogen oxide; air quality; atmospheric pollution; chemical composition; chemical reaction; coal combustion; metropolitan area; nitrate; nitrogen oxides; pollutant source; pollution control; air pollution; air quality; ambient air; Article; biomass; chemical analysis; chemical reaction; China; cold; combustion; decomposition; fractionation; haze; heating; high temperature; measurement; meteorology; oxidation; priority journal; soil; summer; total quality management; wind speed; winter; China; Harbin; Heilongjiang
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/144909
作者单位	Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China; School of Environment, Harbin Institute of Technology, Harbin, 150090, China; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
推荐引用方式 GB/T 7714	Sun X.,Zong Z.,Wang K.,et al. The importance of coal combustion and heterogeneous reaction for atmospheric nitrate pollution in a cold metropolis in China: Insights from isotope fractionation and Bayesian mixing model[J],2020,243.
APA	Sun X..,Zong Z..,Wang K..,Li B..,Fu D..,...&Tian C..(2020).The importance of coal combustion and heterogeneous reaction for atmospheric nitrate pollution in a cold metropolis in China: Insights from isotope fractionation and Bayesian mixing model.Atmospheric Environment,243.
MLA	Sun X.,et al."The importance of coal combustion and heterogeneous reaction for atmospheric nitrate pollution in a cold metropolis in China: Insights from isotope fractionation and Bayesian mixing model".Atmospheric Environment 243(2020).