Xu Zhen-Peng, Qian Ya-Hui, Hong Xiu-Ping, Luo Zhong-Geng, Gao Xiu-Long, Liang Han-Dong
State Key Laboratory of Coal Resources and Safe Mining, Beijing 100083, China.
College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing 100083, China.
Huan Jing Ke Xue. 2023 Jul 8;44(7):3809-3819. doi: 10.13227/j.hjkx.202209062.
The Suntuan mining area of Huaibei is a typical coal resource mining base in the Huainan-Huaibei areas in North China. Previous environmental studies related to surface dust in coal mining areas mainly focused on heavy metals and water-soluble ions, with little research on polycyclic aromatic compounds (PACs). In this study, gas chromatography-triple tandem quadrupole mass spectrometry (GC-MS/MS) was used to determine the contents of 16 parent polycyclic aromatic hydrocarbons (16PAHs), alkyl polycyclic aromatic hydrocarbons (aPAHs), and some oxygenated polycyclic aromatic hydrocarbons (OPAHs) in surface dust from the Suntuan mining area and surrounding environment. The results showed that the ΣPACs concentration range of surface dust in the Suntuan mining area was 283.8-36852.5 μg·kg (mean:4114.2 μg·kg). ΣaPAHs (mean:2593.8 μg·kg) was 2.4 times higher than Σ16PAHs (mean:1074.9 μg·kg), which was the main contributor to PAC pollution. The composition of 16PAHs and aPAHs in surface dust was dominated by low molecular polycyclic aromatic hydrocarbons. The average OPAH content was 445.6 μg·kg. At the same time, PAC pollution was mainly concentrated around the mining area and near the road of a coal gangue landfill. Based on the positive matrix factor (PMF) analysis, it was inferred that the study area was mainly affected by petroleum sources, followed by coal and biomass combustion, and traffic sources and petroleum product leakage accounted for a relatively small proportion. Based on the ratio and distribution pattern of 16PAHs and aPAHs, it was inferred that when Σ16PAHs/ΣPACs<0.25, it was mainly polluted by the coal mining area. The results of PMF combined with lifetime carcinogenic risk (ILCR) showed that there were potential carcinogenic risks for children near the study area, mainly from coal and biomass burning and coal mining. There are many coal mining areas in Huaihe River Basin in China. The results of this study can provide reference for pollution prevention and control of PACs in these coal mining areas.
淮北孙疃矿区是中国华北地区淮南 - 淮北典型的煤炭资源开采基地。以往关于煤矿区地表灰尘的环境研究主要集中在重金属和水溶性离子方面，对多环芳烃（PACs）的研究较少。本研究采用气相色谱 - 三重串联四极杆质谱法（GC - MS/MS）测定孙疃矿区及周边环境地表灰尘中16种母体多环芳烃（16PAHs）、烷基多环芳烃（aPAHs）和一些含氧多环芳烃（OPAHs）的含量。结果表明，孙疃矿区地表灰尘中ΣPACs浓度范围为283.8 - 36852.5 μg·kg（均值：4114.2 μg·kg）。ΣaPAHs（均值：2593.8 μg·kg）比Σ16PAHs（均值：1074.9 μg·kg）高2.4倍，是PAC污染的主要贡献者。地表灰尘中16PAHs和aPAHs的组成以低分子多环芳烃为主。OPAHs平均含量为445.6 μg·kg。同时，PAC污染主要集中在矿区周围和煤矸石填埋场道路附近。基于正矩阵因子（PMF）分析，推断研究区域主要受石油源影响，其次是煤炭和生物质燃烧，交通源和石油产品泄漏占比相对较小。基于16PAHs和aPAHs的比值及分布模式，推断当Σ16PAHs/ΣPACs<0.25时，主要受煤矿区污染。PMF结果结合终生致癌风险（ILCR）表明，研究区域附近儿童存在潜在致癌风险，主要来自煤炭和生物质燃烧以及煤矿开采。中国淮河流域有许多煤矿区。本研究结果可为这些煤矿区PACs污染防治提供参考。
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