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ID 20743
file
creator
Tham Yasmin Wai, Fon
subject
Polycyclic aromatic hydrocarbons
seasonal variation
emission sources
factor analysis
vehicular emissions
NDC
Construction. Civil engineering
abstract
Polycyclic aromatic hydrocarbons (PAHs) are considered to be atmospheric pollutants and well-known human carcinogens. This study analyzes the pollution scenarios of PAHs in the aerosol of Higashi Hiroshima, Japan. We examined the characteristics, the influences of meteorological conditions, the distribution and seasonal variation of PAHs in aerosol samples collected from June 2000 to May 2001. The concentration of PAHs in the aerosol of Higashi Hiroshima was ranging from 11.8 μg/g to 157.5 μg/g with a mean concentration of 63.4 μg/g. Results showed that there is positive correlation between aerosol PAH concentrations and ambient temperature but a relatively little correlation with solar radiation. Seasonal variation was observed with a higher concentration during winter and lower concentration during summer. Apart from that, principal component analysis and molecular diagnostic ratios were also used to characterize and identify possible PAHs emission sources. Results obtained strongly suggested that vehicular emissions appeared to be the major source of aerosol PAHs in this study although other sources do have some degree of influence.
journal title
Water, Air, & Soil Pollution
volume
Volume 182
issue
Issue 1-4
start page
235
end page
243
date of issued
2007-06
publisher
Springer
issn
0049-6979
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
Copyright (c) 2007 Springer "The original publication is available at www.springerlin.com"
relation url
department
Graduate School of Biosphere Science