Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an 710127, China; Department of Earth Sciences, Environment and Resources, University of Naples Federico II, Naples 80125, Italy.
Department of Earth Sciences, Environment and Resources, University of Naples Federico II, Naples 80125, Italy.
Environ Int. 2019 Mar;124:89-97. doi: 10.1016/j.envint.2018.12.031. Epub 2019 Jan 11.
I am often reminded of the famous saying of Goethe: "Vedi Napoli e poi muori! - See Naples and die!". Sadly, Naples is now confronted with a number of serious, ongoing problems with a need to alleviate pressure on the worsening environment. One serious problem facing the environment is the presence of the potentially hazardous persistent organic pollutants (POPs), although few systematic studies at regional scale have been conducted. In this study, samples of soil, air, and bulk deposition were collected in Naples metropolitan area (NMA) to characterize the status of POPs, including organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), and polycyclic aromatic hydrocarbons (PAHs). The results obtained showed that most of these compounds are pervasive in all the studied environmental matrices, especially in some hotspot areas, such as the Bagnoli Brownfield Site and the infamous "Triangle of the Death", where unwanted ecological risk conditions for PAHs and Endosulfan were determined, respectively. The interactional complexity between urban and the surrounding rural areas was also confirmed, as is the role that urban areas play in the migration and transformation process of POPs. High urban-rural gradients for atmospheric PAHs and PCBs were observed in the NMA, and the urban areas were identified as the emission source of these contaminants. Similarly, the OCP residues, historically originated from the nearby agricultural regions, experience long-term soil re-emission and continuously influence the connected urban environment via atmospheric transport processes.
“Vedi Napoli e poi muori! - 看一眼那不勒斯，然后死去！”。可悲的是，那不勒斯现在面临着许多严重的、持续存在的问题，需要缓解日益恶化的环境压力。环境面临的一个严重问题是存在潜在危险的持久性有机污染物 (POPs)，尽管在区域范围内进行的系统研究很少。在这项研究中，采集了那不勒斯大都市区（NMA）的土壤、空气和总沉降样本，以表征包括有机氯农药 (OCPs)、多氯联苯 (PCBs) 和多环芳烃 (PAHs) 在内的 POPs 的状况。研究结果表明，这些化合物在所有研究的环境基质中都普遍存在，特别是在一些热点地区，如 Bagnoli 棕地和臭名昭著的“死亡三角”，分别确定了 PAHs 和硫丹的不可接受的生态风险条件。还证实了城市和周边农村地区之间的相互作用复杂性，以及城市在 POPs 的迁移和转化过程中所扮演的角色。在 NMA 中观察到大气 PAHs 和 PCBs 的城乡梯度很高，城市地区被确定为这些污染物的排放源。同样，历史上源自附近农业区的 OCP 残留经历了长期的土壤再排放，并通过大气输送过程持续影响相连的城市环境。
