Abstract Polycyclic aromatic hydrocarbons (PAHs), elemental carbon (EC), and organic carbon (OC) concentrations were investigated in five fractional rain samples collected in the high-altitude semirural site located at Black Sea Region in order to determine the dominant scavenging mechanism and source regions for these pollutants. The contribution of the secondary organic carbon (OCsec) to the OC concentration was calculated using EC tracer method and confirmed by the help of ozone data. The results showed that the ratio of OCsec to OC was the highest for the 8th April events (68–90%) and the lowest for the 15th April event (37%). The high correlations were found between combustion-related PAHs and EC. Distinct reddish-brown color on filters, dust forecast by BSC-DREAM8b, Sc/Ti ratio, and back trajectory measurements (HYSPLIT) were used to examine the effect of North Africa. Finally, factor analysis (factor loadings and factor scores) results were combined with all findings to determine the effect of local and long range transportation sources.

中文翻译：

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通过测定多环芳烃、元素碳和有机碳，研究高海拔半农村地区基于体积的分数雨样品的洗涤机理

摘要 为了确定黑海地区高海拔半农村地区收集的五个部分雨水样本中多环芳烃 (PAHs)、元素碳 (EC) 和有机碳 (OC) 的浓度，以确定主要的清除机制和这些污染物的来源地区。二次有机碳 (OCsec) 对 OC 浓度的贡献是使用 EC 示踪法计算的，并通过臭氧数据的帮助进行确认。结果表明，OCsec 与 OC 的比率在 4 月 8 日事件中最高（68-90%），在 4 月 15 日事件中最低（37%）。在燃烧相关的 PAH 和 EC 之间发现了高度相关性。过滤器上独特的红棕色，BSC-DREAM8b 的灰尘预测，Sc/Ti 比，和背部轨迹测量 (HYSPLIT) 用于检查北非的影响。最后，因子分析（因子载荷和因子得分）结果与所有发现相结合，以确定本地和远程运输来源的影响。