期刊
ATMOSPHERIC ENVIRONMENT
卷 82, 期 -, 页码 298-306出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.atmosenv.2013.10.042
关键词
Air pollution; Indoor air; Schools; PAHs; Kaunas; Lithuania
资金
- Directorate General for Health and Consumers of the European Commission [SANCO/2009/C4/04]
The indoor air of schools is considered as one of the most important factors affecting the health of children. The aim of the presented research was to characterize polycyclic aromatic hydrocarbons (PAHs) in indoor and outdoor air of schools. The sampling campaign was conducted during the heating season of 2011/2012. Five primary schools from various urban settings in the city of Kaunas, Lithuania. 150 daily samples of particulate and vapor phases were collected during the sampling period. The ultrasonic extractions followed by the gas chromatography and mass spectroscopy (GS/MS) analyses were used for the determination of PAHs. The concentration of total PAHs in the PM2.5 fraction ranged from 203 to 131.1 ng m(-3), while total suspended particles (TSP) fraction contained from 19.9 to 803 ng m(-3) of total PAHs. The vapor phase concentration of PAHs ranged from 67.2 to 372.5 ng m(-3). The most abundant PAH in both phases was naphthalene. In order to define sources of indoor and outdoor PAHs several source apportionment methods were applied. The analysis revealed that emissions from motor vehicles and fuel burning for heating purposes were the major sources of PAHs in the city of Kaunas. (C) 2013 Elsevier Ltd. All rights reserved.
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