Journal
ENVIRONMENTAL POLLUTION
Volume 157, Issue 5, Pages 1559-1564Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2009.01.003
Keywords
PAH; Soil; Source; PMF
Categories
Funding
- China National Natural Science Foundation Program [20807008]
- Key Laboratory of Marine Spill Oil Identification and Damage Assessment Technology
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Soil derived sources of polycyclic aromatic hydrocarbons (PAHs) in the region of Dalian, China were investigated using positive matrix factorization (PMF). Three factors were separated based on PMF for the statistical investigation of the datasets both in summer and winter. These factors were dominated by the pattern of single sources or groups of similar sources, showing seasonal and regional variations. The main sources of PAHs in Dalian soil in summer were the emissions from coal combustion average (46%), diesel engine (30%), and gasoline engine (24%). In winter, the main sources were the emissions from coal-fired boiler (72%), traffic average (20%), and gasoline engine (8%). These factors with strong seasonality indicated that coal combustion in winter and traffic exhaust in summer dominated the sources of PAHs in soil. These results suggested that PMF model was a proper approach to identify the sources of PAHs in soil. (C) 2009 Elsevier Ltd. All rights reserved.
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