| 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, Xiazhong1,2; Zong, Zheng3; Wang, Kun1,2; Li, Bo1,2; Fu, Donglei1,2; Shi, Xiaofei1,2; Tang, Bo1,2; Lu, Lu1,2; Thapa, Samit1,2; Qi, Hong1; Tian, Chongguo3
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| 发表期刊 | ATMOSPHERIC ENVIRONMENT
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| ISSN | 1352-2310 |
| 2020-12-15 | |
| 卷号 | 243页码:9 |
| 关键词 | Source apportionment Oxidation pathways assessment Pollution levels Heating season Haze alleviation |
| DOI | 10.1016/j.atmosenv.2020.117730 |
| 通讯作者 | Qi, Hong(hongqi@hit.edu.cn) ; Tian, Chongguo(cgtian@yic.ac.cn) |
| 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 (delta N-15), 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. |
| 资助机构 | National Science Foundation of China ; State Key Laboratory of Urban Water Resource and Environment Funding, Harbin Institute of Technology |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | AIR-POLLUTION ; SOURCE APPORTIONMENT ; PRIOR INFORMATION ; NITROGEN ; HAZE ; NOX ; CHEMISTRY ; AEROSOL ; OZONE ; PM2.5 |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:000587335700003 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/28333 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室 中国科学院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Qi, Hong; Tian, Chongguo |
| 作者单位 | 1.Harbin Inst Technol, Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China 2.Harbin Inst Technol, Sch Environm, Harbin 150090, Peoples R China 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Xiazhong,Zong, Zheng,Wang, Kun,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]. ATMOSPHERIC ENVIRONMENT,2020,243:9. |
| APA | Sun, Xiazhong.,Zong, Zheng.,Wang, Kun.,Li, Bo.,Fu, Donglei.,...&Tian, Chongguo.(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,243,9. |
| MLA | Sun, Xiazhong,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):9. |
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