期刊
ENVIRONMENT INTERNATIONAL
卷 34, 期 5, 页码 665-670出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.envint.2007.12.009
关键词
PM2.5; SOA; OC/EC; secondary component; traffic
In sampling campaigns - carried out by means of a high-volume gravimetric sampler - performed between August 2002 and December 2003, 24-h PM2.5 samples have been collected at an urban background site in downtown Milan and analyzed for elemental and organic carbon, ionic species (i.e., chloride, nitrates, sulfates and ammonium) and some elemental species. Chemical speciation data are evaluated also in terms of primary and secondary components of fine particulate matter: in particular, the contribution of secondary organic aerosols (SOA) and of the primary contribution from traffic to observed PM2.5 concentration levels are evaluated by means of the EC tracer method. (C) 2007 Elsevier Ltd. All rights reserved.
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