Contribution of Ship Emission to Volatile Organic Compounds Based on One-Year Monitoring at a Coastal Site in the Pearl River Delta Region

Tong，Mengxue1,2; Zhang，Yanli1,2; Zhang，Huiyi3; Chen，Duohong4; Pei，Chenglei5; Guo，Hao1; Song，Wei1; Yang，Xin6; Wang，Xinming1,2

2024-01-28

10.1029/2023JD039999

Journal of Geophysical Research: Atmospheres   影响因子和分区

2169-897X

2169-8996

Ship emission impacts ambient air quality, especially in coastal regions, by emitting air pollutants such as fine particles, nitrogen oxides (NO), and sulfur dioxide (SO), yet its contributions to volatile organic compounds (VOCs) and the formation of secondary organic aerosol (SOA) and ozone (O) 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 O and SOA in coastal regions, and ship emission is a non-negligible source of VOCs, particularly after the strict control of land emission sources.

coastal region ozone formation potentials ship emissions SOAFPs source apportionment volatile organic compounds

SCI

英语

其他

GEOSCIENCES

2-s2.0-85182826418

Scopus

1.State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou,China
2.School of Resources and Environment,University of Chinese Academy of Sciences,Beijing,China
3.Nansha Environmental Monitoring Station,Guangzhou Municipal Ecological Environment Bureau,Guangzhou,China
4.Guangdong Provincial Ecological Environment Monitoring Center,Guangzhou,China
5.Guangdong Province Guangzhou Ecological Environment Monitoring Center Station,Guangzhou,China
6.School of Environmental,Southern University of Science and Technology,Shenzhen,China

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).

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).

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).