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Urban BTEX Spatiotemporal Exposure Assessment by Chemometric Expertise

Author:
Astel, Aleksander Maria, Giorgini, Luigi, Mistaro, Andrea, Pellegrini, Italo, Cozzutto, Sergio, Barbieri, Pierluigi
Source:
Water, air, and soil pollution 2013 v.224 no.4 pp. 1503
ISSN:
0049-6979
Subject:
BTEX (benzene, toluene, ethylbenzene, xylene), air, air quality, atmosphere, benzene, cities, exposure assessment, pollution, temperature, toluene, volatile organic compounds, wind speed, xylene, Italy
Abstract:
Normative regulations on benzene in fuels and urban management strategies are expected to improve air quality. The present study deals with the application of self-organizing maps (SOMs) in order to explore the spatiotemporal variations of benzene, toluene, ethylbenzene, and xylene levels in an urban atmosphere. Temperature, wind speed, and concentration values of these four volatile organic compounds were measured after passive sampling at 21 different sampling sites located in the city of Trieste (Italy) in the framework of a multi-year long-term monitoring program. SOM helps in defining pollution patterns and changes in the urban context, showing clear improvements for what concerns benzene, toluene, ethylbenzene, and xylene concentrations in air for the 2001–2008 timeframe.
Agid:
466272