Air pollutants and the characterization of the organic content of aerosol particles in a mixed industrial/semi-rural area in central Italy |
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Authors: | Di Filippo Patrizia Riccardi Carmela Gariazzo Claudio Incoronato Federica Pomata Donatella Spicaglia Sergio Cecinato Angelo |
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Affiliation: | DIPIA-ISPESL, Via di Fontana Candida 1, 00040 Monteporzio Catone RM, Italy. patrizia.difilippo@ispesl.it |
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Abstract: | Both regulated and unregulated air pollutants were detected during an intensive seasonal sampling campaign in a mixed industrial/semi-rural area on the outskirts of Rome, Italy, at two sites located opposite a hospital waste incinerator, downwind according to the direction of the prevailing local winds. Concentrations of pollutants were significantly lower than in urban atmospheres. The composition of particulate organic material indicated a heavy biogenic impact, accompanied by a lower contribution from petroleum-related processes. Both PAH and nitro-PAH group compositions of particulates were used to assess the nature and relative importance of sources. Both sites showed that different and diffuse sources contributed to local pollution with a significant contribution from traffic, proving that the hospital waste incinerator was not the main pollution source in this area. Among unregulated compounds, a series of positional isomers of nitro-PAHs and other organic compounds associated with particulate matter were investigated. In particular, 1- and 3-nitrophenanthrene identification was carried out, and they proved to be the most abundant nitro-PAHs. |
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