Characterization and Sources of VOCs during PM2.5 Pollution Periods in a Typical City of the Yangtze River Delta
文献类型：期刊论文
| 作者 | Zhang, Dan1,2; Huang, Xiaoqing1,2; Xiao, Shaoxuan1,2; Zhang, Zhou1; Zhang, Yanli1,2 ; Wang, Xinming1,2
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| 刊名 | ATMOSPHERE
 |
| 出版日期 | 2024-10-01 |
| 卷号 | 15期号:10页码:18 |
| 关键词 | Yangtze River Delta (YRD) Hefei volatile organic compounds (VOCs) PM2.5 secondary organic aerosols formation potential (SOAFP) source apportionment |
| DOI | 10.3390/atmos15101162 |
| 英文摘要 | To investigate the characteristics and sources of volatile organic compounds (VOCs) as well as their impacts on secondary organic aerosols (SOAs) formation during high-incidence periods of PM2.5 pollution, a field measurement was conducted in December 2019 in Hefei, a typical city of the Yangtze River Delta (YRD). During the whole process, the mixing ratios of VOCs were averaged as 21.1 +/- 15.9 ppb, with alkanes, alkenes, alkyne, and aromatics accounting for 59.9%, 15.3%, 15.0%, and 9.8% of the total VOCs, respectively. It is worth noting that the contributions of alkenes and alkyne increased significantly during PM2.5 pollution periods. Based on source apportionment via the positive matrix factorization (PMF) model, vehicle emissions, liquefied petroleum gas/natural gas (LPG/NG), and biomass/coal burning were the main sources of VOCs during the research in Hefei. During pollution periods, however, the contribution of biomass/coal burning to VOCs increased significantly, reaching as much as 47.6%. The calculated SOA formation potential (SOAFP) of VOCs was 0.38 +/- 1.04 mu g m(-3) (range: 0.04-7.30 mu g m(-3)), and aromatics were the dominant contributors, with a percentage of 96.8%. The source contributions showed that industrial emissions (49.1%) and vehicle emissions (28.3%) contributed the most to SOAFP during non-pollution periods, whereas the contribution of biomass/coal burning to SOA formation increased significantly (32.8%) during PM2.5 pollution periods. These findings suggest that reducing VOCs emissions from biomass/coal burning, vehicle, and industrial sources is a crucial approach for the effective control of SOA formation in Hefei, which provides a scientific basis for controlling PM2.5 pollution and improving air quality in the YRD region. |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001343390500001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/82073]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Zhang, Zhou |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangdong Key Lab Environm Protect & Resources Uti, Guangzhou 510640, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Dan,Huang, Xiaoqing,Xiao, Shaoxuan,et al. Characterization and Sources of VOCs during PM2.5 Pollution Periods in a Typical City of the Yangtze River Delta[J]. ATMOSPHERE,2024,15(10):18. |
| APA | Zhang, Dan,Huang, Xiaoqing,Xiao, Shaoxuan,Zhang, Zhou,Zhang, Yanli,&Wang, Xinming.(2024).Characterization and Sources of VOCs during PM2.5 Pollution Periods in a Typical City of the Yangtze River Delta.ATMOSPHERE,15(10),18. |
| MLA | Zhang, Dan,et al."Characterization and Sources of VOCs during PM2.5 Pollution Periods in a Typical City of the Yangtze River Delta".ATMOSPHERE 15.10(2024):18. |
入库方式： OAI收割
来源：广州地球化学研究所
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