|Keywords||PM10, PAH, BaP, carcinogenic character, air pollutants|
|Abstract||One of the main pollutants influenced by anthropogenic activities is the particulate matter. Its nature is very varied including not only inorganic but also organic compounds. Into the organic compounds, polycyclic aromatic hydrocarbons (PAH) constitute a particular group of great concern due to their carcinogenic and mutagenic character. In this paper the carcinogenic character of airborne particulate matter less or equal than 10 microns (PM10) regarding PAH was studied in four different Spanish areas (ZGZ= a medium size European city; MON= a small industrial city; MNG= a background station and PIR= a rural background area close to the Pyrenees Mountain) in order to assess the pollution levels and the influence of meteorological conditions in a Mediterranean country like Spain. PM10 samples were collected by using a high-volume air capturer provided with a glass fiber filter coated with Teflon during two sampling periods: warm and cold seasons, respectively in 2008-2009. The organic components of the PM10 were extracted by Soxhlet and PAH were analyzed by gas chromatography with mass spectrometry mass spectrometry detection (CG-MS-MS). Total PAH concentrations were higher during the cold season, independently of the sampling site and they were related to the anthropogenic pollution sources favored by the meteorological conditions: low temperature, low solar radiation and low photochemical reactivity. In this way, ZGZ was the most polluted place followed by MON. A study of the temporal evolution of benzo(a)pyrene (BaP), one of the most carcinogenic PAH, was carried out obtaining the maximum concentrations of this pollutant during the cold season in the areas most affected by anthropogenic activities, finding a seasonal behavior of this pollutant for both sampling periods. High relative humidity, low winds and cold temperature, typical conditions of winter season were the meteorological conditions favoring the BaP accumulation. The guideline value of BaP established by the Directive 2004/107/EC of 1.0 ng m-3 was only exceeded in one of the sampling sites during the cold season for the 13% of the dates. A positive correlation, statistically significant at 95% level, was found between BaP and PM10 for the two sampling points with the highest BaP concentrations, indicating that pollution sources were the same.|
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|Name||Affiliation||Home page||Total pubs|
|Callen MS||Instituto de Carboquimica (CSIC), C/Miguel Luesma Castan, 4, 50018 Zaragoza (Spain)||firstname.lastname@example.org||10|
|Lopez JM||Instituto de Carboquimica (CSIC), C/Miguel Luesma Castan, 4, 50018 Zaragoza (Spain)||9|
|Mastral AM||Instituto de Carboquimica (CSIC), C/Miguel Luesma Castan, 4, 50018 Zaragoza (Spain)||email@example.com||10|
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