Journal
ENVIRONMENTAL POLLUTION
Volume 158, Issue 6, Pages 2170-2174Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2010.02.019
Keywords
Fraction; Soil organic matter; PAHs; Sequestration
Categories
Funding
- National Scientific Foundation of China [40771179, 40730737]
- National Basic Research Program [2007CB407301]
- High Technology Research and Development Program of China [2007AA06Z408]
Ask authors/readers for more resources
The knowledge on the distribution of hydrophobic organic contaminants in soils can provide better understanding for their fate in the environment. In the present study, the n-butanol extraction and humic fractionation were applied to investigate the impact of SOM on the distribution of polycyclic aromatic hydrocarbons (PAHs). The results indicated that 80.5%-94.8% of the target PAHs could be extracted by n-butanol and 63.1%-94.6% of PAHs were associated with fulvic acid (FA). Concentrations of un-extracted PAHs increased significantly with the increasing soil organic matter (SUM), however, such an association was absent for the extractable fractions. The results suggested that the sequestration played a critical role in the accumulation of PAHs in soils. SUM also retarded the diffusion of PAHs into the humin fractions. It implied that sequestration in SUM was critical for PAH distribution in soils, while the properties of PAH compounds also had great influences. (C) 2010 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available