This study provides a thorough investigation of the trends of organic carbon (OC) and elemental carbon (EC) in particulate matter (PM)₁₀ and PM_2.5 samples collected at the Monte Curcio Observatory (1780 m a.s.l.), a station of the Global Atmosphere Watch (GAW) program and Global Mercury Observation System (GMOS) network. Although the drawn attention toward these pollutants, there is still a lack of data for southern Italy, and this work is a contribution toward the filling of this gap. PM was sampled daily in 2016 and analyzed by thermo-optical transmittance method, while equivalent black carbon (eBC) concentrations in PM₁₀ were simultaneously measured using a multiangle absorption photometer. The results showed that in PM₁₀, the average values of OC and EC were 1.43 μgC/m³ and 0.12 μgC/m³, whereas in PM_2.5, these concentrations were 1.09 μgC/m³ and 0.12 μgC/m³, respectively. We detected a clear seasonal variability in OC and EC with higher concentrations during the warm period. Moreover, the analysis of the OC/EC ratio revealed that most of the carbonaceous aerosol was transported by long-range air masses, as further confirmed by the use of the concentration-weighed trajectory (CWT) model. The mass absorption cross-section at 632 nm of EC (MAC_EC) over the entire period was 9.67 ± 4.86 m²/g and 8.70 ± 3.18 m²/g in PM_2.5 and PM₁₀, respectively, and did not exhibit a clear seasonal variation. The concentrations for OC and EC were also used for the computation of the secondary organic carbon (SOC) content, whose outcomes resulted in a seasonal trend similar to those obtained for OC and EC. As regards the eBC, its weekly pattern showed a slight increase during the weekend in the warm period, consistent with the anthropic activities in the touristic area surrounding the observatory.

本研究对在全球大气站 Monte Curcio 天文台 (1780 m asl) 收集的颗粒物 (PM) ₁₀和 PM _2.5样品中有机碳 (OC) 和元素碳 (EC) 的趋势进行了彻底调查Watch (GAW) 计划和全球汞观测系统 (GMOS) 网络。尽管这些污染物引起了人们的关注，但意大利南部仍然缺乏数据，这项工作有助于填补这一空白。2016 年每天对 PM 进行采样并通过热光透射率方法进行分析，同时使用多角度吸收光度计同时测量PM ₁₀中的等效黑碳 (eBC) 浓度。结果表明，在 PM ₁₀，OC 和EC 的平均值分别为1.43 μgC/m ³和0.12 μgC/m ³，而在PM _{2.5 中}，这些浓度分别为1.09 μgC/m ³和0.12 μgC/m ³。我们检测到 OC 和 EC 的明显季节性变化，在温暖时期浓度较高。此外，OC/EC 比率的分析表明，大多数含碳气溶胶是通过远程气团运输的，这通过使用浓度加权轨迹 (CWT) 模型进一步证实。在 PM _{2.5 中}，整个期间EC (MAC _EC )在 632 nm 处的质量吸收截面为 9.67 ± 4.86 m ² /g 和 8.70 ± 3.18 m ² /g和 PM ₁₀，并没有表现出明显的季节性变化。OC 和 EC 的浓度也用于计算次生有机碳 (SOC) 含量，其结果导致季节性趋势类似于 OC 和 EC 获得的那些。至于eBC，其每周模式在温暖时期的周末略有增加，与天文台周围旅游区的人类活动一致。