期刊
ATMOSPHERIC ENVIRONMENT
卷 43, 期 40, 页码 6296-6304出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.atmosenv.2009.09.033
关键词
Trace elements; Venice lagoon; PM2.5; PCA; PMF
资金
- Venice Port Authority
Global emissions reported by many authors have shown as natural and anthropic sources can contribute the principal aerosol classes, but values change according the local scenario. The Venice Lagoon is exposed to different anthropic source emissions like vehicular traffic, industrial thermoelectric power plant, petrochemical plant, incinerator plant, domestic heating, ship traffic, glass factories and airport. Samplings of PM2.5 were daily performed between March and November 2007 in Sacca San Biagio island (Venice), and values Of PM2.5 concentration and element concentration were obtained. Monthly average concentrations (mu g m(-3)) during this period show higher values during the spring and the autumn. A good relationship between data obtained and concentration values from environmental local agencies is evidenced, both for PM2.5 from urban area (Venezia Mestre), and for PM10 sampled in the same area, as well as the influence of some meteorological parameters on PM2.5 concentration sampled. Trace elements samples were measured by an Inductively Coupled Plasma-Quadrupole Mass Spectrometry (ICP-QMS), and values (ng m(-3) and mu g g(-1)) for elements regulated by European directives (As, Cd, Ni, Pb), as well as, other elements (Na, Al, K, Ti, V, Mn, Fe, Co, Zn, Se, Ag) are also reported. Data analysis by mean of Principal Component Analysis (PCA) and Positive Matrix Factorization (PMF) pointed out four principal groups of elements like Mn-Fe-K, As-Se-Cd, V-Co, and Pb that could be assigned to specific sources of the Venetian wetland basin. (C) 2009 Elsevier Ltd. All rights reserved.
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