Soil pollution by polycyclic aromatic hydrocarbons: A comparison oftwo Chinese cities
Jin Ma , Yongzhang Zhou
DOI:
Received November 23, 2010,Revised March 04, 2011, Accepted , Available online
Volume 23,2011,Pages 1518-1523
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Soil samples from Huizhou and Zhanjiang, China were analyzed for 16 priority polycyclic aromatic hydrocarbons (PAHs) with
harmonized sampling, sample extraction and analysis quantification methods. The concentrations and sources of PAHs in soil samples
of the two cities were compared. Almost all of the PAH components were detectable in 103 soil samples. The concentrations of ΣPAHs
ranged from 35.40 to 534.5 g/kg in soil samples from Huizhou, and ranged from 9.50 to 6618.00 g/kg in samples from Zhanjiang.
Evident differences of concentrations, compositions and sources of PAHs in soils were observed between the two cities. The average
concentrations of individual component and the sum of a group of PAHs in soil samples from Zhanjiang were significantly higher
than those in Huizhou (P < 0.05). Phe, Flu, Pyr, Bbf and Baa were the dominant PAH components both in soil samples from Huizhou
and Zhanjiang. Except for these five components, Bap, I1p, Daa and Bgp were also the dominant PAH components in soil samples
from Zhanjiang. Coal combustion and liquid fossil fuel combustion were the same sources of PAHs in the two cities with different
contributions, and petroleum played a key role in PAHs release in Zhanjiang.
