Abstract：Polycyclic aromatic hydrocarbons (PAHs) were analyzed in 39farmland soil samples collected from Shouguang City. The concentrations ranged from 120 to 1486 μg/kg [averaged (415 ± 312) μg/kg] for the 26 PAHs and from 84 to 1076 μg/kg [averaged (289 ± 211) μg/kg] for the 16PAHs. The PAH levels in Shouguang farmland soils were generally moderate compared to those in soils with non-point sources in China. Kriging interpolation map showed two highly contaminated areas that were located in the two industrialized areas in the eastern and western parts, respectively. Moreover, high-molecule weight and low-molecule weight PAHs (HWPAHs and LWPAHs) showed distinct spatial distributions in the soil. Principal components analysis indicated that combustion of fossil fuel, petroleum, and coals burning were the three primary sources of PAHs in soils of Shouguang City, with contributions of 44.7%, 31.7% and 23.6%, respectively. HWPAHs and LWPAHs were both correlated significantly with soil organic matter (SOM), but the correlation was more significant for LWPAHs. This suggested that LWPAHs were more susceptible to SOM than HWPAHs, which were easily controlled by local deposition. Flt and Phe in most soil exceeded the soil quality guidelines of Netherland. The incremental lifetime cancer risk associated with the PAHs in the soils in this region was basically low.
冯岸红, 朱智成, 陈社军, 王璟, 罗孝俊, 麦碧娴. 寿光土壤中多环芳烃的污染特征及风险评估[J]. 中国环境科学, 2013, 33(9): 1607-1614.
FENG An-Hong, ZHU Zhi-Cheng, CHEN She-Jun, WANG Jing, LUO Xiao-Jun, MAI Bi-Xian. Spatial distribution and risk assessment of polycyclic aromatic hydrocarbons in soils of Shouguang City, North China. CHINA ENVIRONMENTAL SCIENCECE, 2013, 33(9): 1607-1614.
