Knowledge Management System Of Guangzhou Institute of Geochemistry，CAS
| He, Kun1; Fu, Tao1; Zhang, Bin1; Xu, Hongmei1; Sun, Jian1; Zou, Haijiang1; Zhang, Zhou2; Ho, Steven Sai Hang3; Cao, Junji4; Shen, Zhenxing1,4 | |
| Examination of long-time aging process on volatile organic compounds emitted from solid fuel combustion in a rural area of China | |
| Source Publication | CHEMOSPHERE
 |
| ISSN | 0045-6535 |
| 2023-08-01 | |
| Volume | 333Pages:10 |
| DOI | 10.1016/j.chemosphere.2023.138957 |
| Language | 英语 |
| WOS Research Area | Environmental Sciences & Ecology |
| Abstract | 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. |
| Keyword | Residential fuels VOCs Briquette technology Atmospheric aging Long-time observation |
| WOS ID | WOS:001002005000001 |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.gig.ac.cn/handle/344008/74302 |
| Collection | 长沙矿产资源勘查中心 |
| Corresponding Author | Xu, Hongmei; Shen, Zhenxing |
| Affiliation | 1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian Key Lab Solid Waste Recycling & Resource Reco, Xian 710049, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Changsha Ctr Mineral Resources Explorat, Changsha, Peoples R China 3.Desert Res Inst, Divison Atmospher Sci, Reno, NV 89512 USA 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710049, Peoples R China |
| Recommended Citation 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. |
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