Examination of long-time aging process on volatile organic compounds emitted from solid fuel combustion in a rural area of China
文献类型：期刊论文
| 作者 | He, Kun4; Fu, Tao4; Zhang, Bin4; Xu, Hongmei4; Sun, Jian4; Zou, Haijiang4; Zhang, Zhou3; Ho, Steven Sai Hang1; Cao, Junji2; Shen, Zhenxing2,4 |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2023-08-01 |
| 卷号 | 333页码:10 |
| 关键词 | Residential fuels VOCs Briquette technology Atmospheric aging Long-time observation |
| ISSN号 | 0045-6535 |
| DOI | 10.1016/j.chemosphere.2023.138957 |
| 英文摘要 | Volatile organic compounds (VOCs) emitted from solid fuels combustion (e.g., biomass and coal) are still the dominant precursors for the formation of tropospheric ozone (O3) and secondary organic aerosols (SOAs). Limited research focused on the evolution, as known as atmospheric aging, of VOCs emitted during long-timescale observations. Here, freshly emitted and aged VOCs from common residual solid fuel combustions were collected onto absorption tubes before and after passing through an oxidation flow reactor (OFR) system, respectively. The emission factor (EF) of freshly emitted total VOCs is in descending order of corn cob >= corn straw > firewood >= wheat straw > coals. Aromatic and oxygenated VOCs (OVOCs) are the two most abundant groups, accounting for >80% of the EF of total quantified VOCs (EFTVOCs). Briquette technology shows an effective reduction of the VOC emission, demonstrating a maximum 90.7% lower EFTVOCs in comparison to that of biomass fuels. In contrast, each VOC shows significantly different degradation in comparison to EF of freshly emitted and after 6-and 12-equivalent day aging (actual atmospheric aging days calculated from aging simu-lation). The largest degradations after 6-equivalent days of aging are observed on alkenes in the biomass group (60.9% on average) and aromatics in the coal group (50.6% on average), consistent with their relatively high reactivities toward oxidation with O3 and hydroxyl radical. The largest degraded compound is seen for acetone, followed by acrolein, benzene, and toluene. Furthermore, the results show that the distinction of VOC species based on long-timescale (12-equivalent day aging) observation is essential to further explore the effect of regional transport. The alkanes which have relatively lower reactivities but high EFs could be accumulated through long-distance transport. These results provide detailed data on fresh and aged VOCs emitted from res-idential fuels which could be used to explore the atmospheric reaction mechanism. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001002005000001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74301]  |
| 专题 | 长沙矿产资源勘查中心 |
| 通讯作者 | Xu, Hongmei; Shen, Zhenxing |
| 作者单位 | 1.Desert Res Inst, Divison Atmospher Sci, Reno, NV 89512 USA 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710049, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, Changsha Ctr Mineral Resources Explorat, Changsha, Peoples R China 4.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian Key Lab Solid Waste Recycling & Resource Reco, Xian 710049, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Kun,Fu, Tao,Zhang, Bin,et al. Examination of long-time aging process on volatile organic compounds emitted from solid fuel combustion in a rural area of China[J]. CHEMOSPHERE,2023,333:10. |
| APA | He, Kun.,Fu, Tao.,Zhang, Bin.,Xu, Hongmei.,Sun, Jian.,...&Shen, Zhenxing.(2023).Examination of long-time aging process on volatile organic compounds emitted from solid fuel combustion in a rural area of China.CHEMOSPHERE,333,10. |
| MLA | He, Kun,et al."Examination of long-time aging process on volatile organic compounds emitted from solid fuel combustion in a rural area of China".CHEMOSPHERE 333(2023):10. |
入库方式： OAI收割
来源：广州地球化学研究所
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