Journal
CHEMOSPHERE
Volume 127, Issue -, Pages 64-69Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2014.12.075
Keywords
Arable soil; PAHs; Coke production base; Source identification; Risk assessment
Categories
Funding
- National Natural Science Foundation of China [41271507]
- Postdoctoral Foundation of Shanxi Agricultural University [614144]
- Natural Science Foundation of Shanxi Province, China [2008011061-2]
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There is wide concern about polycyclic aromatic hydrocarbons (PAHs) because of their carcinogenic and mutagenic potential. The coking industry is an important source of PAHs. In this study, 36 arable soil samples, a sensitive medium from the perspective of food safety and health, were collected from one of the largest coke production bases in China. The concentration of total 21 PAHs ranged from 294 to 1665 ng g(-1), with a mean of 822 +/- 355 ng g(-1). Approximately 60% of the soil samples were heavily polluted with the level higher than 600 ng g(-1). Particularly high abundances of high molecular weight PAHs were found, and the calculated BaPeq was as high as 54.3 ng g-(-1). Soil PAH levels were positively correlated with soil organic matter content. The soil PAHs were from complex mixture sources, and high-temperature pyrogenic sources were most likely responsible for the heavy PAR contamination. Effective control strategies and probable remediation approaches should be proposed to improve soil quality. (C) 2015 Elsevier Ltd. All rights reserved.
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