Fates of secondary organic aerosols in the atmosphere identified fromcompound-specific dual-carbon isotope analysis of oxalic acid
文献类型：期刊论文
| 作者 | Xu, Buqing1,2; Tang, Jiao1,2; Tang, Tiangang2,3; Zhao, Shizhen1,2; Zhong, Guangcai1,2; Zhu, Sanyuan1,2; Li, Jun1,2; Zhang, Gan1,2 |
| 刊名 | ATMOSPHERIC CHEMISTRY AND PHYSICS
 |
| 出版日期 | 2023-01-27 |
| 卷号 | 23期号:2页码:1565-1578 |
| ISSN号 | 1680-7316 |
| DOI | 10.5194/acp-23-1565-2023 |
| 英文摘要 | Secondary organic aerosols (SOAs) are important components of fine particulates in the atmosphere. However, the sources of SOA precursor and atmospheric processes affecting SOAs are poorly understood. This limits our abilities to improve air quality and model aerosol-mediated climate forcing. Here, we use novel compound-specific dual-carbon isotope fingerprints (delta C-14 and delta C-13) for individual SOA tracer molecules (i.e., oxalic acid) to investigate the fates of SOAs in the atmosphere at five emission hotspots in China. Coal combustion and vehicle exhaust accounted for similar to 55 % of the sources of carbon in oxalic acid in Beijing and Shanghai, but biomass burning and biogenic emissions accounted for similar to 70 % of the sources of carbon in oxalic acid in Chengdu, Guangzhou, and Wuhan during the sampling period. The dual-carbon isotope signatures of oxalic acid and bulk organic carbon pools (e.g., water-soluble organic carbon) were compared to investigate the fates of SOAs in the atmosphere. Photochemical aging and aqueous-phase chemical processes dominate the formation of oxalic acid in summer and in winter, respectively. The results indicated that SOA carbon sources and chemical processes producing SOAs vary spatially and seasonally, and these variations need to be included in Chinese climate projection models and air quality management practices. |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000923015100001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/72652]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Zhang, Gan |
| 作者单位 | 1.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Buqing,Tang, Jiao,Tang, Tiangang,et al. Fates of secondary organic aerosols in the atmosphere identified fromcompound-specific dual-carbon isotope analysis of oxalic acid[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2023,23(2):1565-1578. |
| APA | Xu, Buqing.,Tang, Jiao.,Tang, Tiangang.,Zhao, Shizhen.,Zhong, Guangcai.,...&Zhang, Gan.(2023).Fates of secondary organic aerosols in the atmosphere identified fromcompound-specific dual-carbon isotope analysis of oxalic acid.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(2),1565-1578. |
| MLA | Xu, Buqing,et al."Fates of secondary organic aerosols in the atmosphere identified fromcompound-specific dual-carbon isotope analysis of oxalic acid".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.2(2023):1565-1578. |
入库方式： OAI收割
来源：广州地球化学研究所
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