Abstract：
Magnetic and chemical biomonitoring methodologies were applied to the southern slopes of the Palatine Hill archaeological area in Rome, Italy. Plant leaves and lichen transplants were respectively sampled and exposed between July 2022 and June 2023 to assess the impact of vehicular particulate matter from Via dei Cerchi, a trafficked road coasting Circus Maximus, towards the archaeological area upon the Palatine Hill. The magnetic properties of leaves and lichens, inferred from magnetic susceptibility, hysteresis loops and first order reversal curves, were combined with the concentration of trace elements. It was demonstrated that the bioaccumulation of magnetite-like particles, associated with tracers of vehicular emissions, such as Ba and Sb, decreased with longitudinal distance from the road, without any important influence of elevation from the ground. Lichens demonstrated to be more efficient biomonitors of airborne PM than leaves, irrespective of the plant species. Conversely, leaves intercepted and accumulated all PM fractions, including road dusts and resuspended soil particles. Thus, plant leaves are suitable for providing preventive conservation services that limit the impact of particulate pollution on cultural heritage sites within busy metropolitan contexts.
摘要：
将磁性和化学生物监测方法应用于罗马PalatineHill考古区的南坡，意大利。在2022年7月至2023年6月之间分别对植物叶片和地衣移植进行了采样和暴露，以评估来自ViadeiCerchi的车辆颗粒物的影响，马希穆斯马戏团，朝帕拉蒂尼山的考古区走去.叶子和地衣的磁性，从磁化率推断，磁滞回线和一阶反转曲线，与微量元素的浓度相结合。证明了磁铁矿样颗粒的生物积累，与车辆排放物示踪剂相关，比如Ba和Sb，随着与道路的纵向距离而减小，没有任何重要的影响从地面的海拔。事实证明，地衣比树叶更有效地监测空气中的PM，无论植物种类如何。相反，截获并积累所有PM部分的叶子，包括道路灰尘和再悬浮的土壤颗粒。因此，植物叶子适合提供预防性保护服务，以限制颗粒物污染对繁忙大都市环境中文化遗产的影响。
