Liu Jingjing, Liu Guijian, Zhang Jiamei, Yin Hao, Wang Ruwei
CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China.
J Environ Monit. 2012 Oct 26;14(10):2634-42. doi: 10.1039/c2em30433c. Epub 2012 Aug 23.
In order to evaluate soil-associated polycyclic aromatic hydrocarbons (PAHs) pollution from coal mine activities in Tiefa coal mine, Northeast China, 16 PAHs identified as priority pollutants by US Environmental Pollution Agency were determined in mining zone soil (MZS), agricultural soil (AS), local lake bank soil (LBS), a vertical soil profile and three coal gangue samples. The total concentration of 16 PAHs (defined as Σ(16)PAH, dry weight) in surface soil ranged from 5.1 to 5642.3 ng g(-1), with an arithmetic mean of 1118.3 ng g(-1). Σ(16)PAH values at the sites from MZS are significantly higher than those found in AS and LBS. The vertical distribution of PAHs indicated that these compounds can penetrate the deeper layers of the soil, especially the low-rings compounds. A complex of petrogenic origin and pyrolytic sources was found within the study area, as suggested by the isomeric ratios of PAHs. According to principal component analysis (PCA), four factors were identified in the source contribution, including coal combustion, unburned coal particulates, coal gangue and vehicular emissions. The degree of contamination and the PAH toxicity assessment suggested that the soils of the study area have been seriously polluted and pose a high potential health risk.
为了评估中国东北铁法煤矿煤矿活动造成的土壤中多环芳烃（PAHs）污染情况，在美国环境保护局确定为优先污染物的16种多环芳烃在矿区土壤（MZS）、农业土壤（AS）、当地湖岸土壤（LBS）、一个垂直土壤剖面和三个煤矸石样品中进行了测定。表层土壤中16种多环芳烃的总浓度（定义为Σ(16)PAH，干重）范围为5.1至5642.3 ng g(-1)，算术平均值为1118.3 ng g(-1)。MZS站点的Σ(16)PAH值显著高于AS和LBS站点的值。多环芳烃的垂直分布表明这些化合物可以渗透到土壤深层，尤其是低环化合物。多环芳烃的异构体比例表明，研究区域内存在成岩源和热解源的复合体。根据主成分分析（PCA），在源贡献中确定了四个因素，包括煤炭燃烧、未燃烧的煤颗粒、煤矸石和车辆排放。污染程度和多环芳烃毒性评估表明，研究区域的土壤已受到严重污染，并构成较高的潜在健康风险。
