气候变化领域集成服务门户(CCPortal): Characteristics and sources of aerosol aminiums over the eastern coast of China: Insights from the integrated observations in a coastal city; adjacent island and surrounding marginal seas

CCPortal

DOI	10.5194/acp-19-10447-2019
	Characteristics and sources of aerosol aminiums over the eastern coast of China: Insights from the integrated observations in a coastal city; adjacent island and surrounding marginal seas
	Zhou S.; Li H.; Yang T.; Chen Y.; Deng C.; Gao Y.; Chen C.; Xu J.
发表日期	2019
ISSN	16807316
起始页码	10447
结束页码	10467
卷号	19 期号:16
英文摘要	An integrated observation of aerosol aminiums was conducted in a coastal city (Shanghai) in eastern China, a nearby island (Huaniao Island), and over the Yellow Sea and East China Sea (YECS). Triethylaminium (TEAH+) was abundant over Shanghai but not detected over the island and the open seas, suggesting its predominantly terrestrial origin. By contrast, relatively high concentrations of dimethylaminium (DMAH+) and trimethylaminium Cdiethylaminium (TMDEAH+) were measured over the ocean sites, indicating the significant marine source contribution. Environmental factors, including boundary layer height (BLH), temperature, atmospheric oxidizing capacity and relative humidity, were found to be related to aminium concentrations. All the detected aminiums demonstrated the highest levels in winter in Shanghai, consistent with the lowest BLH and temperature in this season. Aminiums mainly existed in fine particles and showed a bimodal distribution, with two peaks at 0.18-0.32 μm and 0.56-1.0 μm, indicating that condensation and cloud processing were the main formation pathways for aminiums in analogy with NHC 4 and non-sea-salt SO42- (nss-SO42-). Nonetheless, a unimodal distribution for aerosol aminiums was usually measured over the YECS or over Huaniao Island when influenced mainly by the marine air mass, which suggested that aminiums in marine aerosols may undergo different formation pathways from those on the land. Terrestrial anthropogenic sources and marine biogenic sources were both important contributors for DMAH+ and TMDEAH+, and the latter exhibited a significantly higher TMDEAH+ to DMAH+ ratio. By using the mass ratio of methanesulfonate (MSA) to nss-SO42- as an indicator of marine biogenic source, we estimated that marine biogenic source contributed to 26 %-31%and 53 %-78%of aerosol aminiums over Huaniao Island in the autumn of 2016 and summer of 2017, respectively. Due to the important role of atmospheric amines in new particle formation, the estimation results highlighted the importance of marine biogenic emission of amines on the eastern coast of China, especially in summer. © Author(s) 2019.
语种	英语
scopus关键词	aerosol; air temperature; boundary layer; concentration (composition); environmental factor; integrated approach; marginal sea; oxidation; relative humidity; China; East China Sea; Huaniao Island; Pacific Ocean; Shanghai; Shengsi Islands; Yellow Sea; Zhejiang; Zhoushan Islands
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144209
作者单位	Shanghai Key Laboratory of Atmospheric Particle Pollution Prevention, Department of Environmental Science and Engineering, Fudan University, Jiangwan Campus, Shanghai, 200438, China; Institute of Eco-Chongming (IEC), 3663 N. Zhongshan Rd., Shanghai, 200062, China; Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, 361005, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361005, China
推荐引用方式 GB/T 7714	Zhou S.,Li H.,Yang T.,et al. Characteristics and sources of aerosol aminiums over the eastern coast of China: Insights from the integrated observations in a coastal city; adjacent island and surrounding marginal seas[J],2019,19(16).
APA	Zhou S..,Li H..,Yang T..,Chen Y..,Deng C..,...&Xu J..(2019).Characteristics and sources of aerosol aminiums over the eastern coast of China: Insights from the integrated observations in a coastal city; adjacent island and surrounding marginal seas.Atmospheric Chemistry and Physics,19(16).
MLA	Zhou S.,et al."Characteristics and sources of aerosol aminiums over the eastern coast of China: Insights from the integrated observations in a coastal city; adjacent island and surrounding marginal seas".Atmospheric Chemistry and Physics 19.16(2019).