Chemical Characterization of Organic Nitrogen Aerosols

建立了一种研究气溶胶有机氮（ON）化学特性的分析方法。用该方法对海洋气溶胶中的生物示踪剂二乙胺进行了检测，发现在北太平洋西部气溶胶的亚μm范围内含量较高。结果表明，夏季该地区的有机气溶胶富含与海洋生物活动有关的氮，表明含氮有机化合物（主要是不溶于水的）从海面优先转移到海洋大气。

An analytical method was established to investigate chemical characteristics of aerosol organic nitrogen (ON). By using the method, diethylamine which is a biogenic tracer was detected in marine aerosol and was found to be more abundant in the sub-μm range of the aerosols in the western North Pacific. The result shows that organic aerosols over the region in summer are enriched in ON that is linked to oceanic biological activity and indicates a preferential transfer of nitrogen-containing organic compounds (mostly water-insoluble) from the sea surface to the marine atmosphere.