生态环境学报2016，Vol.25Issue(6)：1006-1013,8.DOI:10.16258/j.cnki.1674-5906.2016.06.014
山东省农业典型地区土壤中PAHs分布特征、来源及生态风险评估
The Distribution Characterization/Sources and Risk Assessment of PAHs in Different Agriculture Typical Areas of Shandong Province
摘要
Abstract
In order to investigate the pollution of polycyclic aromatic hydrocarbons (PAHs) in typical agricultural areas of Shandong Province, GC-MS was adopted to analysis the concentration of 16 PAHs. The distribution, source, and ecological risk of PAHs in three typical agricultural areas (Ji Ning, Ning Yang, Shou Guang) from 2008 to 2011 years were analyzed. The results showed that the concentration of 16 kinds of PAHs ranged from 46.3 to 149.2μg·kg-1, NAP and PHE were the major part of 16 kinds of PAHs. The concentration of 16 kinds of PAHs was highest in Shou Guang, followed by Ning Yang and Ji Ning. The concentration of 16 kinds of PAHs was higher in 0~10 cm than other soil layers because of human disturbance, and decreased with depth the of the soil. According to the different usage of soil, the distribution of 16 kinds of PAHs concentration was Rice soil>Upland soil>Undisturbed soil. The results of molecular ratio method were w(PHE)/w(ANT)<15, w(FLT)/w(PYR)>1, w(FLT)/[w(FLT)+w(PYR)]>0.5 and w(IND)/[w(IND)+w(BghiP)]>0.5, suggesting that the primary sources of PAHs were incomplete combustion of coal, fuel wood as well as straw, and utilization of fuel wood and straw. According to the method of Maliszewska-Kordybach, the concentration of 16 kinds of PAHs was 227.9μg·kg-1in 0~10 cm soil layer of Shou Guang, indicating that it was at micro-pollution level, and Ni Yang and Ji Ning were at pollution-free levels. Toxic benzo [a] pyrene (BaP) equivalent concentration to assess ecological risk of PAHs was adopted. The results showed that carcinogenic 7 kinds of PAHs made great contributions to TEQBap. TEQBap of 10 kinds of PAHs in the Dutch soil standard were 0.64μg·kg-1 (Ji Ning), 7.41μg·kg-1 (Ning Yang) and 13.61μg·kg-1 (Shou Guang), respectively, which were lower than Dutch target values, suggesting that there were low PAHs ecological risk in typical agriculture fields of Shandong Province.关键词
PAHs/农业典型地区/分布/源解析Key words
PAHs/typical agriculture area/distribution/source分类
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陈庆锋,马君健,郭贝贝..山东省农业典型地区土壤中PAHs分布特征、来源及生态风险评估[J].生态环境学报,2016,25(6):1006-1013,8.基金项目
国家自然科学基金项目（41003033）；国家重大科技水专项（2012ZX07203-004）；山东省科技攻关 （）
