Villanueva Florentina, Tapia Araceli, Cabañas Beatriz, Martínez Ernesto, Albaladejo José
Laboratorio de Contaminación Atmosférica, Instituto de Investigación en Combustión y Contaminación Atmosférica, Universidad de Castilla-La Mancha, Camino de Moledores s/n, 13071, Ciudad Real, Spain.
Parque Científico y Tecnológico de Castilla La Mancha, Paseo de la Innovación 1, 02006, Albacete, Spain.
Environ Sci Pollut Res Int. 2015 Dec;22(23):18814-23. doi: 10.1007/s11356-015-5061-y. Epub 2015 Jul 24.
Over 1-year period, 13 polycyclic aromatic hydrocarbons (PAHs) associated with particulate matter PM10 have been monitored for the first time in the atmosphere of Ciudad Real, situated at the central-southern Spain. PM10-bound PAHs were collected using a high-volume sampler from autumn 2012 to summer 2013 and were analyzed by HPLC with fluorescence detector. The most abundant PAHs were pyrene, chrysene, benzo[b]fluoranthene, dibenzo[a,h]anthracene and benzo[g,h,i]perylene. The ∑PAH concentrations in Ciudad Real were 888, 368, 259 and 382 pg m(-3) for winter, spring, summer and autumn seasons, respectively. The diurnal variation of PAH was also investigated presenting the highest concentrations during the evening (19:00-23:00). Benzo[a]pyrene concentrations ranged from 2.4 to 110 pg m(-3), these values are lower than the target value proposed by the European legislation, 1 ng m(-3). Diagnostic ratios were used to identify potential sources of PAHs. Results suggest that vehicle emissions are the major source of identified PAHs, with a higher contribution of diesel engines although other anthropogenic sources could also have an impact on the PAH levels.
在一年的时间里，首次对位于西班牙中南部的雷阿尔城大气中与细颗粒物PM10相关的13种多环芳烃（PAHs）进行了监测。2012年秋季至2013年夏季，使用大容量采样器收集了与PM10结合的PAHs，并通过配备荧光检测器的高效液相色谱法进行了分析。含量最高的多环芳烃是芘、 Chrysene、苯并[b]荧蒽、二苯并[a,h]蒽和苯并[g,h,i]苝。雷阿尔城冬季、春季、夏季和秋季的∑PAH浓度分别为888、368、259和382 pg m(-3)。还研究了多环芳烃的日变化，结果显示傍晚（19:00 - 23:00）浓度最高。苯并[a]芘浓度范围为2.4至110 pg m(-3)，这些值低于欧洲法规提出的目标值1 ng m(-3)。使用诊断比率来识别多环芳烃的潜在来源。结果表明，车辆排放是已识别多环芳烃的主要来源，柴油发动机的贡献更大，不过其他人为来源也可能对多环芳烃水平产生影响。
