The coastal aerosol represents a complex mixing between sea spray aerosols locally generated at the sea surface and a component generated by natural and/or anthropogenic sources on the nearby land. The aim of this paper is to study the atmospheric concentrations of carbonaceous compounds as measured in the coastal zone of the Northern Adriatic Sea between April 2017 and April 2018. The results show a quite large contribution of carbonaceous compounds, even when the sampled air mass is predominantly maritime. Although it is generally assumed that 70% and 90% of bulk organic carbon (OC) and elemental carbon (EC) concentrations, respectively, are found in the fine mode, we observed higher OC and EC concentrations in the coarse fraction (up to about 37% and 25%, respectively). This confirms the occurrence of mixing between anthropogenic matter and sea spray, mainly composed of coarse aerosol particles, during the atmospheric transport over the Mediterranean basin.

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JERICO-NEXT 项目框架中亚得里亚海北部碳质气溶胶的表征

沿海气溶胶代表了在海面局部产生的海喷雾气溶胶与附近陆地上自然和/或人为来源产生的成分之间的复杂混合。本文的目的是研究 2017 年 4 月至 2018 年 4 月期间在亚得里亚海北部沿海地区测量的含碳化合物的大气浓度。结果显示含碳化合物的贡献相当大，即使采样的气团为主要是海运。尽管通常假设 70% 和 90% 的本体有机碳 (OC) 和元素碳 (EC) 浓度分别存在于精细模式中，但我们在粗级部分中观察到更高的 OC 和 EC 浓度（高达约37% 和 25%）。