Sources and formation of carbonaceous aerosols in Xi'an, China: primary emissions and secondary formation constrained by radiocarbon
文献类型：期刊论文
| 作者 | Ni, Haiyan1,3,4; Huang, Ru-Jin2,4; Cao, Junji4; Guo, Jie4; Deng, Haoyue1; Dusek, Ulrike1 |
| 刊名 | ATMOSPHERIC CHEMISTRY AND PHYSICS
 |
| 出版日期 | 2019-12-20 |
| 卷号 | 19期号:24页码:15609-15628 |
| ISSN号 | 1680-7316 |
| DOI | 10.5194/acp-19-15609-2019 |
| 通讯作者 | Huang, Ru-Jin(rujin.huang@ieecas.cn) |
| 英文摘要 | To investigate the sources and formation mechanisms of carbonaceous aerosols, a major contributor to severe particulate air pollution, radiocarbon (C-14) measurements were conducted on aerosols sampled from November 2015 to November 2016 in Xi'an, China. Based on the C-14 content in elemental carbon (EC), organic carbon (OC) and water-insoluble OC (WIOC), contributions of major sources to carbonaceous aerosols are estimated over a whole seasonal cycle: primary and secondary fossil sources, primary biomass burning, and other non-fossil carbon formed mainly from secondary processes. Primary fossil sources of EC were further sub-divided into coal and liquid fossil fuel combustion by complementing C-14 data with stable carbon isotopic signatures. The dominant EC source was liquid fossil fuel combustion (i.e., vehicle emissions), accounting for 64 % (median; 45 %-74 %, interquartile range) of EC in autumn, 60 % (41 %-72 %) in summer, 53 % (33 %-69 %) in spring and 46 % (29 %-59 %) in winter. An increased contribution from biomass burning to EC was observed in winter (similar to 28 %) compared to other seasons (warm period; similar to 15 %). In winter, coal combustion (similar to 25 %) and biomass burning equally contributed to EC, whereas in the warm period, coal combustion accounted for a larger fraction of EC than biomass burning. The relative contribution of fossil sources to OC was consistently lower than that to EC, with an annual average of 47 +/- 4 %. Non-fossil OC of secondary origin was an important contributor to total OC (35 +/- 4 %) and accounted for more than half of non-fossil OC (67 +/- 6 %) throughout the year. Secondary fossil OC (SOCfossil) concentrations were higher than primary fossil OC (POCfossil) concentrations in winter but lower than POCfossil in the warm period. Fossil WIOC and water-soluble OC (WSOC) have been widely used as proxies for POCfossil and SOCfossil, respectively. This assumption was evaluated by (1) comparing their mass concentrations with POCfossil and SOCfossil and (2) comparing ratios of fossil WIOC to fossil EC to typical primary OC-to-EC ratios from fossil sources including both coal combustion and vehicle emissions. The results suggest that fossil WIOC and fossil WSOC are probably a better approximation for primary and secondary fossil OC, respectively, than POCfossil and SOCfossil estimated using the EC tracer method. |
| WOS关键词 | NON-FOSSIL SOURCES ; PM2.5 CHEMICAL-COMPOSITION ; REGIONAL BACKGROUND SITE ; SOLUBLE ORGANIC-CARBON ; WINTER HAZE EPISODE ; SOURCE APPORTIONMENT ; ELEMENTAL CARBON ; ATMOSPHERIC AEROSOLS ; SEASONAL-VARIATIONS ; PARTICULATE MATTER |
| 资助项目 | National Key Research and Development Program of China[2017YFC0212701] ; National Natural Science Foundation of China[91644219] ; National Natural Science Foundation of China[41877408] ; National Natural Science Foundation of China[41925015] ; KNAW project[530-5CDP30] |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000504010900002 |
| 出版者 | COPERNICUS GESELLSCHAFT MBH |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; KNAW project |
| 源URL | [http://ir.ieecas.cn/handle/361006/13107]  |
| 专题 | 地球环境研究所_粉尘与环境研究室 第四纪科学与全球变化卓越创新中心 |
| 通讯作者 | Huang, Ru-Jin |
| 作者单位 | 1.Univ Groningen, Ctr Isotope Res CIO, ESRIG, NL-9747 AG Groningen, Netherlands 2.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Ctr Excellence Quaternary Sci & Global Change, Inst Earth Environm,Key Lab Aerosol Chem & Phys, Xian 710061, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ni, Haiyan,Huang, Ru-Jin,Cao, Junji,et al. Sources and formation of carbonaceous aerosols in Xi'an, China: primary emissions and secondary formation constrained by radiocarbon[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(24):15609-15628. |
| APA | Ni, Haiyan,Huang, Ru-Jin,Cao, Junji,Guo, Jie,Deng, Haoyue,&Dusek, Ulrike.(2019).Sources and formation of carbonaceous aerosols in Xi'an, China: primary emissions and secondary formation constrained by radiocarbon.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(24),15609-15628. |
| MLA | Ni, Haiyan,et al."Sources and formation of carbonaceous aerosols in Xi'an, China: primary emissions and secondary formation constrained by radiocarbon".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.24(2019):15609-15628. |
入库方式： OAI收割
来源：地球环境研究所
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