Risk assessment and sources of polycyclic aromatic hydrocarbons in agricultural soils of Huanghuai plain, China

详细信息    查看全文

• 作者：Bing Yang ; N ; ong Xue ; Lingli Zhou ; Fasheng Li ; Xin Cong ; Baolu Han ; Huiying Li ; Yunzhong Yan ; Bo Liu
• 关键词：Polycyclic aromatic hydrocarbons (PAHs) ; Agricultural soil ; Risk assessment ; Principal component analysis
• 刊名：Ecotoxicology and Environmental Safety
• 出版年：2012
• 出版时间：1 October, 2012
• 年：2012
• 卷：84
• 期：Complete
• 页码：304-310
• 全文大小：604 K

文摘

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 ¦Ìg/kg, with an average of 129.5 ¦Ìg/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.