Aerosols dispersed in the atmosphere represent important factors influencing not only the environment, but also human health. Carbonaceous aerosols are one of the main components of total atmospheric aerosols, and their sources are of great interest. Radiocarbon analysis provides an excellent way to determine the fraction of fossil and non-fossil aerosols in the atmosphere. Over the period of one year (June 2017-June 2018), we sampled atmospheric aerosols with size greater than 0.3 μm in Bratislava, Slovakia and used the exposed quartz filters for radiocarbon analysis of the elemental carbon (EC) aerosol fraction. The results show that on average the fossil fuel combustion is the dominant source of EC aerosol particles in Bratislava. In summer months, they represent more than half (65-80%) of the total EC aerosols. The relative amount of EC particles derived from biomass burning was 20-35% in summer, which increased to 40-55% in winter months. The dominance of fossil fraction is caused by high degree of industrialization and urbanization of the city. The increase of biomass fraction in winter is probably caused by domestic wood burning in areas surrounding the Bratislava city.

中文翻译：

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斯洛伐克布拉迪斯拉发含碳气溶胶的放射性碳分析。

散布在大气中的气溶胶不仅是影响环境，而且影响人类健康的重要因素。碳质气雾剂是总大气气雾剂的主要成分之一，其来源备受关注。放射性碳分析提供了一种确定大气中化石和非化石气溶胶比例的极好方法。在一年的时间里（2017年6月至2018年6月），我们在斯洛伐克的布拉迪斯拉发采样了尺寸大于0.3μm的大气气溶胶，并使用裸露的石英滤池对元素碳（EC）气溶胶组分进行了放射性碳分析。结果表明，平均而言，化石燃料燃烧是布拉迪斯拉发EC气溶胶颗粒的主要来源。在夏季，它们占EC气溶胶总量的一半以上（65-80％）。夏季，源自生物质燃烧的EC颗粒的相对量为20-35％，冬季则增加到40-55％。化石部分的优势是由城市的高度工业化和城市化引起的。冬季生物量比例的增加可能是由于布拉迪斯拉发市区周围的家用木材燃烧所致。