Centre for Nuclear and Accelerator Technologies (CENTA), Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48, Bratislava, Slovakia.
Center for Applied Isotope Studies, University of Georgia, Athens, 30602, Georgia, USA.
J Environ Radioact. 2024 Sep;278:107512. doi: 10.1016/j.jenvrad.2024.107512. Epub 2024 Aug 7.
Radiocarbon measurements of total carbon (TC) fraction of aerosol samples collected at the campus of the Comenius University in Bratislava (Slovakia) during 2022-2023 were carried out. Based on radiocarbon activity of these samples and a source apportionment model we have determined the relative proportion of fossil and non-fossil carbon in collected atmospheric aerosols. The carbon from non-fossil sources (biomass burning and biogenic emissions) was dominant in this time period, on average it formed 72% of carbon present in the aerosols from the atmosphere of Bratislava. The whole range of determined non-fossil fraction was relatively small as it varied only from 0.67 (August-September) to 0.82 (December-January). These changes do not exhibit any significant seasonal variation as was previously observed in Bratislava during 2017-2018 in the elemental carbon (EC) aerosol fraction.
对 2022-2023 年期间在布拉迪斯拉发科米纽斯大学（斯洛伐克）校园采集的气溶胶样品中的总碳（TC）部分进行了放射性碳测量。基于这些样品的放射性碳活性和源分配模型，我们确定了收集到的大气气溶胶中化石碳和非化石碳的相对比例。在此期间，来自非化石源（生物质燃烧和生物源排放）的碳占主导地位，平均占布拉迪斯拉发大气气溶胶中存在的碳的 72%。所确定的非化石部分的整个范围相对较小，因为它仅从 0.67（8 月至 9 月）变化到 0.82（12 月至 1 月）。这些变化没有表现出任何明显的季节性变化，如之前在 2017-2018 年期间在布拉迪斯拉发的元素碳（EC）气溶胶部分观察到的那样。
