Influence of continental organic aerosols to the marine atmosphere over the East China Sea: Insights from lipids, PAHs and phthalates
Influence of continental organic aerosols to the marine atmosphere over the East China Sea: Insights from lipids, PAHs and phthalates
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大陆有机气溶胶对东海海洋大气的影响：来自脂质、多环芳烃和邻苯二甲酸盐的见解。
DOI：
10.1016/j.scitotenv.2017.06.214
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发表时间：
2017-12-31
影响因子：
9.8
通讯作者：
Fu, Pingqing
中科院分区：
文献类型：
--
作者：
Kang, Mingjie;Yang, Fan;Fu, Pingqing
于2014年5月18日至6月12日在东海海域进行海上巡航，采集了总悬浮颗粒物（TSP）样品。他们进行了分析，溶剂可提取的有机化合物（脂类化合物，多环芳烃和邻苯二甲酸酯），使用气相色谱/质谱（GC/MS），以更好地了解气溶胶污染的来源和源解析在西北太平洋。根据五天后向气团轨迹，在受陆地影响的气溶胶样本中观察到较高的浓度，特别是在沿海地区附近收集的气溶胶。邻苯二甲酸酯被认为是这些测量的化合物类别中的主要物种（白天为707 +/- 401 ng m（-3），夜间为313 +/- 155 ng m（-3）），其次是脂肪酸，脂肪醇，正烷烃和多环芳烃。一般来说，这些化合物的白天丰度高于夜间，可能是由于在白天更密集的人类活动。因子分析表明，生物质燃烧、真菌活动和化石燃料燃烧可能是东海有机气溶胶的主要排放源。本研究表明，东亚大陆可以是一个自然的排放源的生物和人为的有机物通过远程传输到海洋大气中，这控制了化学成分和浓度的有机气溶胶在东海。(C)2017爱思唯尔B. V.保留所有权利。
Total suspended particle (TSP) samples were collected during a marine cruise in the East China Sea from May 18 to June 12, 2014. They were analyzed for solvent extractable organic compounds (lipid compounds, PAHs and phthalates) using gas chromatography/mass spectrometry (GC/MS) to better understand the sources and source apportionment of aerosol pollution in the western North Pacific. Higher concentrations were observed in the terrestrially influenced aerosol samples on the basis of five-day backward air mass trajectories, especially for aerosols collected near coastal areas. Phthalates were found to be the dominant species among these measured compound classes (707 +/- 401 ng m(-3) for daytime and 313 +/- 155 ng m(-3) for nighttime), followed by fatty acids, fatty alcohols, n-alkanes and PAHs. In general, the daytime abundances for these compounds are higher than nighttime, possibly attributable to more intensive anthropogenic activities during the daytime. The factor analysis indicates that biomass burning, fungal activities and fossil fuel combustion maybe the main emission sources for organic aerosols over the East China Sea. This study demonstrates that the East Asian continent can be a natural emitter of biogenic and anthropogenic organics to the marine atmosphere through long-range transport, which controls the chemical composition and concentration of organic aerosols over the East China Sea. (C) 2017 Elsevier B.V. All rights reserved.