Dongarrà Gaetano, Manno Emanuela, Varrica Daniela
Dipartimento Chimica e Fisica della Terra, Università di Palermo, 90123 Palermo, Italy.
Environ Monit Assess. 2009 Jul;154(1-4):117-25. doi: 10.1007/s10661-008-0382-7. Epub 2008 Jun 28.
Looking for robust indicators of motor vehicle emissions it has been found that brake wear and linings are significant contributors of Cu, Mo and Sb to air particulate matter. These trace elements, whose mutual ratios in airborne particulate matter resulted quite different from those in crustal material, appear to be available fingerprinting tools to identify the contribution of on-road vehicles to traffic-derived particulate matter. In this study, the results of analytical determinations of Cu, Mo and Sb on PM(10), PM(2.5), vegetation and brake dust samples, together with gas (CO, NOx) concentrations, are discussed. Highly significant correlations among Cu, Sb and Mo were observed in particulate matter from Palermo and between Cu-Sb and Cu-Mo at Catania. Further significant positive correlations have been found in pine needles from Palermo, Gela and in platanus leaves from Catania.
在寻找机动车排放的可靠指标时，人们发现制动磨损和刹车片是空气中颗粒物中铜、钼和锑的重要来源。这些微量元素在空气中颗粒物中的相互比例与地壳物质中的比例有很大不同，似乎是识别道路车辆对交通源颗粒物贡献的可用指纹识别工具。在本研究中，讨论了对PM(10)、PM(2.5)、植被和制动粉尘样品中铜、钼和锑的分析测定结果，以及气体（一氧化碳、氮氧化物）浓度。在巴勒莫的颗粒物中以及卡塔尼亚的铜-锑和铜-钼之间观察到铜、锑和钼之间有高度显著的相关性。在巴勒莫、杰拉的松针以及卡塔尼亚的悬铃木叶中还发现了进一步显著的正相关。
