Contribution of Ship Emission to Volatile Organic Compounds Based on One-Year Monitoring at a Coastal Site in the Pearl River Delta Region
文献类型：期刊论文
| 作者 | Tong, Mengxue4,5,7; Zhang, Yanli4,5,7 ; Zhang, Huiyi1; Chen, Duohong6; Pei, Chenglei3; Guo, Hao4,5; Song, Wei4,5; Yang, Xin2; Wang, Xinming4,5,7
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| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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| 出版日期 | 2024-01-28 |
| 卷号 | 129期号:2页码:17 |
| 关键词 | coastal region ship emissions volatile organic compounds source apportionment ozone formation potentials SOAFPs |
| ISSN号 | 2169-897X |
| DOI | 10.1029/2023JD039999 |
| 英文摘要 | Ship emission impacts ambient air quality, especially in coastal regions, by emitting air pollutants such as fine particles, nitrogen oxides (NOx), and sulfur dioxide (SO2), yet its contributions to volatile organic compounds (VOCs) and the formation of secondary organic aerosol (SOA) and ozone (O3) are much less constrained with the challenge in distinguish ship emission from land diesel emission. In this study, we conducted a 1-year online measurement of VOCs with a 1-hr resolution at a coastal site in south China's Pearl River Delta region, which holds three of the world's top 10 container ports. The results revealed that C10-C12 n-alkanes, as typical diesel-related emission tracers, were significantly enhanced and strongly related to oceanic air masses. Receptor modeling revealed two diesel-related sources of land diesel emission and ship emission, which could be differentiated based on their source profiles, seasonal trends and air mass back trajectories. Ship emissions contributed 6.4%, 5.0%, and 13.6% of total VOC mixing ratios, ozone formation potentials (OFPs), and secondary organic aerosol formation potentials (SOAFPs), while these percentages were 3.4%, 14.7%, and 15.9% for land diesel emission, respectively. In particular, in July, ship emissions could contribute 21.7%, 14.6%, and 31.2% of VOCs, OFPs, and SOAFPs, respectively. Our results highlight the important contribution of diesel-related emission VOCs in forming O3 and SOA in coastal regions, and ship emission is a non-negligible source of VOCs, particularly after the strict control of land emission sources. Ships emit pollutants like fine particles, nitrogen oxides (NOx), sulfur dioxide (SO2), and volatile organic compounds (VOCs), impacting significantly on air quality in coastal areas. Ship-emitted VOCs are potential precursors of secondary organic aerosol (SOA) and ozone (O3), yet its contribution to ambient VOCs even in coastal areas is highly uncertain based on bottom-up estimates. Meanwhile, observation-based source attribution often fails to successfully differentiate between land-based diesel emissions and ship emissions. Here we carried out a year-long online monitoring of VOCs at a coastal site in south China, to explore the contribution of ship emissions to VOCs by receptor modeling in consideration of air mass trajectories. We used concentration-weighted trajectory (CWT) and air mass cluster analysis for C10-C12 n-alkanes, which are typical diesel emission tracers, to distinguish ship emission from land-based diesel emission. Results revealed that ship emissions on average could accounted for 6.4% of total VOCs, 5.0% of ozone formation potentials, and 13.6% of secondary organic aerosol formation potential, and in particular, these percentages could reach 21.7%, 14.6%, and 31.2% in July. This study highlights the importance of reducing ship emissions to improve air quality in coastal regions. One-year online monitoring of VOCs at a coastal site reveals relatively higher C10-C12 alkanes due to diesel-related emissionsShip and land-diesel emissions are differentiated based on air mass back trajectories and source profilesShip emissions contributed substantially to VOC mixing ratios, OFPs and SOAFPs especially in July when air masses were mostly from the ocean |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001146862800001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/76212]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Zhang, Yanli |
| 作者单位 | 1.Guangzhou Municipal Ecol Environm Bur, Nansha Environm Monitoring Stn, Guangzhou, Peoples R China 2.Southern Univ Sci & Technol, Sch Environm, Shenzhen, Peoples R China 3.Guangdong Prov Guangzhou Ecol Environm Monitoring, Guangzhou, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Key Lab Environm Protect & Resources Uti, Guangzhou, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Peoples R China 6.Guangdong Prov Ecol Environm Monitoring Ctr, Guangzhou, Peoples R China 7.Univ Chinese Acad Sci, Sch Resources & Environm, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tong, Mengxue,Zhang, Yanli,Zhang, Huiyi,et al. Contribution of Ship Emission to Volatile Organic Compounds Based on One-Year Monitoring at a Coastal Site in the Pearl River Delta Region[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2024,129(2):17. |
| APA | Tong, Mengxue.,Zhang, Yanli.,Zhang, Huiyi.,Chen, Duohong.,Pei, Chenglei.,...&Wang, Xinming.(2024).Contribution of Ship Emission to Volatile Organic Compounds Based on One-Year Monitoring at a Coastal Site in the Pearl River Delta Region.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,129(2),17. |
| MLA | Tong, Mengxue,et al."Contribution of Ship Emission to Volatile Organic Compounds Based on One-Year Monitoring at a Coastal Site in the Pearl River Delta Region".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 129.2(2024):17. |
入库方式： OAI收割
来源：广州地球化学研究所
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