Department of Chemistry, University of Florence, Via della Lastruccia, 3, 50019 Sesto Fiorentino, Florence, Italy.
Environ Pollut. 2012 May;164:252-8. doi: 10.1016/j.envpol.2011.12.040. Epub 2012 Feb 28.
Polycyclic aromatic hydrocarbons (PAHs) associated to PM(2.5) particles were monitored at three sites in the region of Tuscany, Italy, during the period March 2009-March 2010. PAH concentrations ranged between 0.92 ng m(-3) and 13 ng m(-3). The spatial and seasonal differences observed at the three sites are discussed and attributed to specific PAH sources. Benzo[a]Pyrene average annual values were below the EU limit value of 1.0 ng m(-3). The results of this study suggest that emissions from commuting and work related traffic play an important role for the city of Florence, whereas for the city of Livorno, the harbor activities seem to impact the PAH burden substantially, as well. The PAH cancer risk (expressed as the "BaPE index") has shown a 6-fold decline compared to early 1990's concentrations and 2- to 3-fold decline compared to the late 1990's.
多环芳烃（PAHs）与 PM（2.5）颗粒相关联，在意大利托斯卡纳地区的三个地点进行了监测，监测时间为 2009 年 3 月至 2010 年 3 月。PAH 浓度范围在 0.92ng/m³和 13ng/m³之间。讨论了三个地点观察到的空间和季节性差异，并归因于特定的 PAH 源。苯并[a]芘的年平均值低于欧盟规定的 1.0ng/m³限值。本研究结果表明，通勤和工作相关交通的排放对佛罗伦萨市的影响较大，而对于里窝那市，港口活动似乎对 PAH 负担有很大影响。与 20 世纪 90 年代早期的浓度相比，PAH 致癌风险（表示为“BaPE 指数”）下降了 6 倍，与 20 世纪 90 年代末相比下降了 2-3 倍。
