IRSA-CNR, via del Mulino 19, 20047 Brugherio, MB, Italy.
Environ Pollut. 2011 Oct;159(10):2552-64. doi: 10.1016/j.envpol.2011.06.015. Epub 2011 Jul 14.
Persistent Organic Pollutants (POPs) and Polycyclic Aromatic Hydrocarbons (PAHs) are important classes of compounds of serious environmental concern. These compounds were measured in waters, sediments and soils from several high altitude sites in the Sagarmatha National Park (Nepal) and included in the Himalayan ridge. In water samples, low-level substituted PCBs and PBDEs, along with more volatile PAHs, were the most common contaminants. In sediment and soil samples, the PCB profile was mainly composed of medium-level chlorinated congeners and significantly correlated with altitude. The PAH profile for water and soil samples showed the main contribution of pyrogenic PAHs due to emissions of solid combustion, whereas the profile for sediments indicated the main contribution of pyrogenic PAHs from gasoline emissions. The PAH levels measured in Himalayan samples must be considered as low to medium contaminated, whereas the regarded Himalayan stations can be considered undisturbed remote areas concerning PCB, PBDE and OC compounds.
持久性有机污染物（POPs）和多环芳烃（PAHs）是严重环境关注的重要化合物类别。这些化合物在尼泊尔萨加玛塔国家公园（Sagarmatha National Park）的几个高海拔地点的水、沉积物和土壤中进行了测量，并包含在喜玛拉雅山脉中。在水样中，低水平取代的多氯联苯（PCBs）和聚溴二苯醚（PBDEs）以及更易挥发的多环芳烃是最常见的污染物。在沉积物和土壤样本中，PCB 分布主要由中氯代同系物组成，并且与海拔高度显著相关。水和土壤样本的 PAH 分布显示，由于固体燃烧排放，主要是源自于燃烧源的多环芳烃；而沉积物样本的 PAH 分布则表明，汽油排放的多环芳烃主要源自于燃烧源。在喜马拉雅山样本中测量到的多环芳烃水平被认为是低到中度污染，而被认为是喜马拉雅山地区的这些监测站可以被视为未受干扰的偏远地区，与 PCB、PBDE 和 OC 化合物有关。
