期刊
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
卷 84, 期 -, 页码 304-310出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2012.07.027
关键词
Polycyclic aromatic hydrocarbons (PAHs); Agricultural soil; Risk assessment; Principal component analysis
资金
- Key Program of the Special Scientific Research Fund of Environmental Public Welfare Profession of China [201109017-2]
- National High Technology Research and Development Program of China (863 Program) [2012AA06A304]
The profiles and sources of polycyclic aromatic hydrocarbons (PAHs) were analyzed in 227 agricultural surface soils from the Huanghuai plain, China. The total concentrations of 16 PAHs varied from 15.7 to 1247.6 mu g/kg, with an average of 129.5 mu g/kg. Compared with pollution level and carcinogenic potential risk in other research, the soil PAH concentrations in this study fell within low to middle level. Unexpectedly, a significant correlation was not observed between the PAH concentration in soils and the corresponding content of the soil organic matter. This is partly interpreted for our sampling sites located in agricultural area where fresh input of organic fertilizers is expected. Principal component analysis-multiple linear regression suggests that low temperature combustion, coal combustion and traffic emissions could be the primary PAH contributors in soils from the Huanghuai plain, accounting for 46.7 percent, 42.1 percent and 11.2 percent of PAH concentrations, respectively. (C) 2012 Elsevier Inc. All rights reserved.
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