Environmental behaviors of PAHs in Ordovician limestone water of Fengfeng coal mining area in China
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In this study, we collected a total of 15 Ordovician limestone (OL) water, 4 shallow groundwater, 3 mine water, 2 surface water, and 2 coal bedrock water samples, aiming to analyze the characteristics of distributions and sources of polycyclic aromatic hydrocarbons (PAHs) in OL water in a typical exploited coal mine named as Fengfeng mining area. Firstly, the PAHs behaviors and characteristics in different types of water of the mining area were investigated and summarized. And then, the hydrogen and oxygen isotopes were combined with isomer ratio method to determine the characteristics, sources, and behaviors of PAHs in OL water, respectively. Results showed that the concentration of PAHs ranged from 0.06 to 0.56 ng/L in OL water of Fengfeng Mine. Among them, the dominant 2–4 cyclic PAHs, including Nap, Phe, Flt, and Flu, were detected at a low concentration level with high detection rate. Characteristic compound ratios Ant/(Ant + Phe) and Flt/(Flt + Pyr) showed that the PAHs were derived from the combustion of the coal and biomass. The results of δD/δ18O and δD/Phe testing showed that the PAHs in most OL water came from rainfall infiltration recharge with coal and biomass combustion products in exposed bedrock area at high altitude. The PAHs of some polluted areas were derived from leakage recharge of shallow groundwater, mine water, and coal bedrock water.
KeywordsPolycyclic aromatic hydrocarbons (PAHs) Ordovician limestone (OL) water Isomer ratio method Hydrogen isotope Oxygen isotope
This research is financially supported by the National Geological Environment Monitoring and Forecasting Project (NO.1210800000022-6) and Key Laboratory of Mine Geological Hazards Mechanism and Control Project.
- Alves, C. A., Vicente, A. M., Custódio, D., Cerqueira, M., Nunes, T., Pio, C., et al. (2017). Polycyclic aromatic hydrocarbons and their derivatives (nitro-PAHs, oxygenated PAHs, and azaarenes) in PM 2.5 from Southern European cities. Science of The Total Environment, 595, 494–504. https://doi.org/10.1016/j.scitotenv.2017.03.256.
- Bi, L. M., Hao, J. M., Ning, P., Shi, J. W., Shi, Z., & Xu, X. F. (2015). Characteristics and sources apportionment of PM2.5-bound PAHs in Kunming. China Environmental Science, 35, 659–667.Google Scholar
- Duodu, G. O., Ogogo, K. N., Mummullage, S., Harden, F., Goonetilleke, A., Ayoko, G. A., (2017). Source apportionment and risk assessment of PAHs in Brisbane River sediment, Australia. Ecological Indicators, 73, 784–799. https://doi.org/10.1016/j.ecolind.2016.10.038.
- Lan, J. C., Sun, Y. C., & Xiao, S. Z. (2015). Water-sediment partition of polycyclic aromatic hydrocarbons in karst underground river. Environmental Sciences, 36, 4081–4087.Google Scholar
- Lu, L., Wang, Z., & Pei, J. G. (2015). Environment characteristics of polycyclic aromatic hydrocarbons in multimedia in underground rivers of Guangxi karst areas. Geosci, 29, 324–330.Google Scholar
- Sienra, M. R., Rosazza, N. G., & Préndez, M. (2005). Polycyclic aromatic hydrocarbons and their molecular diagnostic ratios in urban atmospheric respirable particulate matter. Atmospheric Research, 75, 267–281.Google Scholar
- Yan, Y. M., Qin, P., & Wu, Z. L. (2010). Influence on the karst groundwater environment by coal mining in the Fengfeng coalmine area. China Mining Magazine, 19, 120–125.Google Scholar
- Yang, C., Zhong, N. N., Chen, D. Y., Wang, J., & Peng, X. G. (2007a). Composition and distribution characteristics of polycyclic aromatic hydrocarbons in waters samples from a coal-mining area, Henan. China Journal of Safety and Environment, 7, 75–78.Google Scholar
- Yang, C., Zhong, N. N., & Chen, D. Y. (2007b). Distribution characteristics of polycyclic aromatic hydrocarbons (PAHs) in suspended particulate matter of surface water in coal-mining area, China. China Environ Sci, 27, 488–492.Google Scholar
- Yin, S. X., Xu, B., Xu, H., & Xia, X. X. (2014). The application of chemical tracer experiments on exploring the mine water filling conditions. Journal of China Coal Society, 39, 129–134.Google Scholar
- Yuan, Z. M., Wang, H. Y., & Wang, R. J. (1988). Study on karst groundwater system in Hanxing area. Beijing: Geological Publishing House.Google Scholar
- Zhang, J. S., Zhou, J., Liu, X. X., & Liu, F. Z. (2017a). Pollution characteristics of PAHs in water and sediments of irrigation canal in suburb of Beijing. Environment Pollution Control, 39, 236–243.Google Scholar
- Zhang, L., Chen, Y., & Kong, L. F. (2017b). Analysis of pollution characteristics of PAHs in Xinjiang Zhundong coal mining area. Environment and Chemistry, 36, 677–684.Google Scholar