Sun Zhe, Liu Jing, Zhuo Shaojie, Chen Yuanchen, Zhang Yanyan, Shen Huizhong, Yun Xiao, Shen Guofeng, Liu Weiping, Zeng Eddy Y, Tao Shu
College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China.
College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
Environ Sci Pollut Res Int. 2017 May;24(13):12168-12175. doi: 10.1007/s11356-017-8838-3. Epub 2017 Mar 28.
Polycyclic aromatic hydrocarbons (PAHs) in agricultural soils, eastern China, were studied through a collection of surface samples at 109 sites. The study covered US EPA priority pollutants but also several non-priority isomers including some dibenzopyrenes which are expected to have higher toxic potentials. The total PAH concentrations varied extensively from 8.8 to 3880 μg/kg, with a geometric mean of 158 μg/kg. There were significant differences in both the concentrations and composition profiles between the south and the north regions. The overall geographical distribution pattern was strongly influenced by both the per capita gross domestic product and soil organic carbon (SOC) content. The former is an indicator of anthropogenic emissions while soil SOC content is associated with the accumulative capacities of the soils. The sequestration mechanism is an important process controlling fates of PAHs in agricultural soil.
通过在华东地区109个地点采集表层土壤样本，对农业土壤中的多环芳烃（PAHs）进行了研究。该研究涵盖了美国环境保护局（US EPA）的优先污染物，同时也包括几种非优先异构体，其中一些二苯并芘预计具有更高的潜在毒性。多环芳烃的总浓度变化范围很大，从8.8至3880μg/kg不等，几何平均值为158μg/kg。南部和北部地区在浓度和组成特征方面均存在显著差异。总体地理分布模式受到人均国内生产总值和土壤有机碳（SOC）含量的强烈影响。前者是人为排放的指标，而土壤SOC含量与土壤的累积能力相关。固存机制是控制农业土壤中多环芳烃归宿的重要过程。
