Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, 30123, Venice, Italy.
Environ Monit Assess. 2014 Mar;186(3):1409-19. doi: 10.1007/s10661-013-3463-1. Epub 2013 Nov 20.
Polycyclic aromatic hydrocarbons (PAHs) are organic pollutants derived from pyrolysis and pyrosynthesis processes. Industrial activity, motor vehicle emission, and domestic combustion are the main sources of PAHs in the urban atmosphere. In this work, samples collected during the day and night in the urban area of Sarajevo are analyzed separately for gaseous and particle-bound PAHs; the possible origin of PAHs at the receptor site was suggested using different methods applied to the solid phase and to the total PAHs (gaseous + particulate phase). Finally, the risk level in Sarajevo associated to the carcinogenic character of the studied PAHs has been assessed. The result of this study suggests that (a) the total PAH concentrations were higher than those reported in other European cities; (b) the PAH daytime concentrations are higher than nocturnal concentrations: the sum of the PAH day/night ratios is 1.52 (gas) and 1.45 (particle phase); (c) stationary combustion and traffic were suggested to be the main sources of PAHs; (d) the average particle-bound benzo(a)pyrene (BaP) concentration (5.4 ng/m(3)) is higher than EU target annual value (1 ng/m(3)); and (e) PAH cancer risk exceeds the carcinogenic benchmark level recommended by the EPA mainly due to BaP during both the day and night periods.
多环芳烃（PAHs）是源自热解和热合成过程的有机污染物。工业活动、机动车排放和家庭燃烧是城市大气中 PAHs 的主要来源。在这项工作中，分别分析了萨拉热窝市区白天和夜间采集的气体和颗粒结合态 PAHs 样本；应用不同方法对固相和总 PAHs（气态+颗粒相）进行分析，提出了在受体位置 PAHs 的可能来源。最后，评估了与所研究 PAHs 的致癌特征相关的萨拉热窝的风险水平。该研究结果表明：(a)总 PAH 浓度高于其他欧洲城市的报告值；(b)PAH 的日间浓度高于夜间浓度：PAH 的日/夜比值总和为 1.52（气体）和 1.45（颗粒相）；(c)建议固定燃烧和交通是 PAHs 的主要来源；(d) 平均颗粒结合态苯并(a)芘（BaP）浓度（5.4 ng/m3）高于欧盟目标年值（1 ng/m3）；(e)PAH 的癌症风险超过了 EPA 推荐的致癌基准水平，主要是由于 BaP 在白天和夜间均存在。
