In the present work, PAH uptake ability was tested in oven-devitalized moss (Hypnum cupressiforme) and lichen (Pseudevernia furfuracea) exposed in bags for six weeks in 9 periurban sites of Campania region (southern Italy). Based on a previous pilot work, aims of the study were to verify: i) whether the lichen showed higher PAH uptake and flux; ii) whether the two biomonitors evidenced similar pollution trends over the study area; iii) whether the two biomonitors highlighted similar pollution sources based on specific diagnostic ratios. For most PAHs, the accumulation was significantly higher in the lichen compared to moss, likely due to the ability of the first to entrap PAHs in the thallus and preserve these compounds from degradation during the exposure. In both biomonitors 4-rings PAHs prevailed, followed by 2–3-rings, both in lichen and in moss, whereas a limited accumulation of 5–6-rings PAHs was observed. The better performance of the lichen directly reflected on PAH deposition fluxes, which were significantly higher in the lichen also due to its lower specific leaf area. Despite the different sensitivity of the two species, they provided similar information in all sites, describing the same trend of pollution over the study area. According to diagnostic ratios, both moss and lichen highlighted pyrogenic emissions occurred during the six-week exposure.

在目前的工作中，PAH吸收能力已在烤箱失活的苔藓（Hypnum cupressiforme）和地衣（Pseudevernia furfuracea）中进行了测试。）放在坎帕尼亚地区（意大利南部）的9个城市郊区的袋子中，暴露六个星期。根据先前的试验工作，该研究的目的是验证：i）地衣是否显示出较高的PAH吸收和通量；ii）两个生物监测器在研究区域内是否表现出相似的污染趋势；iii）两位生物监测者是否根据特定的诊断比率突出了相似的污染源。对于大多数PAH，与苔藓相比，地衣中的积累要高得多，这可能是由于第一个将PAH截留在the中并使这些化合物免于暴露过程中降解的能力的缘故。在两个生物监测器中，地衣和苔藓中普遍存在4个环的PAHs，随后是2个至3个环，而5-6个环的PAHs积累有限。地衣的更好性能直接反映在PAH沉积通量上，PAH沉积通量也显着较高，这也是由于其比叶面积较低。尽管这两种物种的敏感性不同，但它们在所有地点都提供了相似的信息，描述了研究区域内相同的污染趋势。根据诊断率，苔藓和地衣均突出显示了在六周的暴露过程中发生的热释放。