Contributions of fossil and non-fossil fractions to total carbon in urban aerosols in Bratislava (Slovakia)

IF 1.9 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Journal of environmental radioactivity Pub Date : 2024-08-07 DOI:10.1016/j.jenvrad.2024.107512

Ivan Kontul , Alexander Cherkinsky , Miroslav Ješkovský , Jakub Kaizer , Pavel P. Povinec , Karol Sučák , Jakub Zeman

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Abstract

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.

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化石和非化石部分对布拉迪斯拉发（斯洛伐克）城市气溶胶中碳总量的贡献。

我们对 2022-2023 年期间在布拉迪斯拉发（斯洛伐克）夸美纽斯大学校园收集的气溶胶样本的总碳（TC）部分进行了放射性碳测量。根据这些样本的放射性碳活性和碳源分配模型，我们确定了化石碳和非化石碳在所收集的大气气溶胶中的相对比例。非化石来源（生物质燃烧和生物排放）的碳在这一时期占主导地位，平均占布拉迪斯拉发大气气溶胶中碳含量的 72%。测定的非化石部分的整体范围相对较小，仅从 0.67（8 月-9 月）到 0.82（12 月-1 月）不等。这些变化没有表现出任何明显的季节性变化，正如之前在 2017-2018 年期间在布拉迪斯拉发观察到的元素碳（EC）气溶胶部分一样。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of environmental radioactivity 环境科学-环境科学

CiteScore

4.70

自引率

13.00%

发文量

209

审稿时长

73 days

期刊介绍： The Journal of Environmental Radioactivity provides a coherent international forum for publication of original research or review papers on any aspect of the occurrence of radioactivity in natural systems. Relevant subject areas range from applications of environmental radionuclides as mechanistic or timescale tracers of natural processes to assessments of the radioecological or radiological effects of ambient radioactivity. Papers deal with naturally occurring nuclides or with those created and released by man through nuclear weapons manufacture and testing, energy production, fuel-cycle technology, etc. Reports on radioactivity in the oceans, sediments, rivers, lakes, groundwaters, soils, atmosphere and all divisions of the biosphere are welcomed, but these should not simply be of a monitoring nature unless the data are particularly innovative.