重庆涪陵典型页岩气场地多环芳烃的分布、来源和迁移特征

周俊鹏; 秦超杰; 杨秀雯; 熊俊武; 张超; 刘伟; 祁士华; 陈伟

doi:10.19509/j.cnki.dzkq.tb20250398

重庆涪陵典型页岩气场地多环芳烃的分布、来源和迁移特征

doi: 10.19509/j.cnki.dzkq.tb20250398

周俊鹏^{1a, 1b,},
秦超杰^{1b, 2},
杨秀雯^{1a, 1b},
熊俊武^{1a, 1b},
张超^{1a, 1b},
刘伟^{1c, 2, 3},
祁士华^{1a, 1c, 3},
陈伟^{1a, 1b, 1c, 2, 3, 4, ,}

1a.
中国地质大学（武汉）：环境学院
1b.
中国地质大学（武汉）：地下水质与健康教育部重点实验室
1c.
中国地质大学（武汉）：地质微生物与环境全国重点实验室，武汉 430078
2.
中国地质大学（武汉）自然资源调查研究院，武汉 430074
3.
中国地质大学（武汉）内蒙古研究院，内蒙古鄂尔多斯 017010
4.
湖北省地质局资源与生态环境地质湖北省重点实验室，武汉 430034

基金项目: 国家重点研发计划（2019YFC1805502；2018YFC1801701）；湖北省自然科学基金联合基金项目（2026AFC0780）；中国地质大学（武汉）中央高校基本科研业务费特色学科团队专项项目（G1323523063）；资源与生态环境地质湖北省重点实验室开放基金资助项目（HBREGKFJJ-202301）

详细信息

作者简介:
周俊鹏：E-mail：1442119953@qq.com

通讯作者:
E-mail：wei.chen@cug.edu.cn

计量
- 文章访问数: 293
- PDF下载量: 22
- 被引次数: 0
出版历程
- 收稿日期: 2025-09-02
- 录用日期: 2025-12-22
- 修回日期: 2025-11-27
- 网络出版日期: 2025-12-22

Distribution, sources, and transport characteristics of polycyclic aromatic hydrocarbons from a typical shale gas site in Fuling, Chongqing, China

ZHOU Junpeng^{1a, 1b
,},
QIN Chaojie^{1b, 2},
YANG Xiuwen^{1a, 1b},
XIONG Junwu^{1a, 1b},
ZHANG Chao^{1a, 1b},
LIU Wei^{1c, 2, 3},
QI Shihua^{1a, 1c, 3},
CHEN Wei^{1a, 1b, 1c, 2, 3, 4
, ,}

1a.
School of Environmental Studies
1b.
MOE Key Laboratory of Groundwater Quality and Health
1c.
State Key Laboratory of Geomicrobiology and Environmental Changes, China University of Geosciences (Wuhan), Wuhan 430078, China
2.
Institute of Natural Resource Survey, China University of Geosciences (Wuhan), Wuhan 430074, China
3.
Inner Mongolia Institute of Technology, China University of Geosciences (Wuhan), Ordos Inner Mongolia 017010, China
4.
Hubei Key Laboratory of Resources and Eco-Environment Geology, Hubei Geological Bureau, Wuhan 430034, China

More Information

Author Bio:
E-mail：1442119953@qq.com

Corresponding author: E-mail：wei.chen@cug.edu.cn

摘要

摘要:
页岩气开采过程中可能产生多环芳烃（PAHs），并释放到环境中，对环境和人体健康造成威胁。我国最大的页岩气开采区位于重庆涪陵岩溶区，其产生的PAHs可能会对岩溶地下水系统造成影响。为探明页岩气开采区PAHs在岩溶地下水系统中的迁移特征，以涪陵页岩气开采典型场地为研究对象，分析了区域内土壤、泉水、地表水及对应沉积物中PAHs的含量、空间分布和组成特征，并对其潜在的来源进行了解析。结果表明：水体中16种优控PAHs（Σ₁₆PAHs）的质量浓度为17.3～57.4 ng/L，土壤中Σ₁₆PAHs的质量分数为16.1～162 ng/g，沉积物中Σ₁₆PAHs的质量分数为35.3～962 ng/g；白水河的南部支流泉水和西部支流泉水中Σ₁₆PAHs的质量分数分别为20.3～57.4 ng/L和18.4～34.4 ng/L，页岩气场地在运行过程中会对南部支流泉水造成影响，但影响范围有限，不会对更远的下游白水河水体造成明显影响。组成分析表明，水体中低分子量PAHs（LMW-PAHs）的占比为59%～82%；沉积物与土壤中LMW-PAHs的占比为15%～42%。源解析结果显示，对研究区内PAHs贡献最大的是石油类污染源（37.3%），其次为煤炭与生物质燃烧源（31.9%）和交通排放源（30.8%）。多元线性回归（MLR）分析的结果显示，南部支流泉水（显著性水平p < 0.01）和西部支流泉水（p < 0.01）分别贡献了白水河水体中41.9%和29.0%的PAHs，土壤（p < 0.01）贡献了沉积物中38.9%的PAHs；表明PAHs会在地下水系统的影响下迁移至下游水体，也可能通过地表或地下迁移途径从土壤迁移至泉沉积物。本研究刻画了受页岩气开采的影响区岩溶地下水中PAHs的迁移过程，对页岩气开采区的岩溶地下水资源和环境保护具有重要意义。
- 多环芳烃(PAHs) /
- 页岩气开采 /
- 来源解析 /
- 迁移特征 /
- 水文地质条件
Abstract:
Objective
Polycyclic aromatic hydrocarbons (PAHs) may be produced during the processes of shale gas exploitation, which may threaten both the environment and human health. The largest shale gas exploitation area in China is located in the Fuling karst region of Chongqing, and the produced PAHs may affect the karst groundwater system.
Methods
To explore the transport processes of PAHs in karst groundwater systems within shale gas exploitation areas, a typical exploitation site from the shale gas exploitation area in Fuling was selected as the study area. The concentrations, spatial distribution, and compositional characteristics of PAHs in soils, spring water, surface water, and corresponding sediments were analyzed. Additionally, their potential sources were identified.
Results
The results showed that the total concentrations of 16 priority PAHs (Σ₁₆PAHs) in the water, soils, and sediments ranged from 17.3 to 57.4 ng/L, from 16.1 to 162 ng/g, and from 35.3 to 962 ng/g, respectively. The concentration ranges of Σ₁₆PAHs in spring water from the southern tributary and western tributary of the Baishui River were 20.3-57.4 ng/L and 18.4-34.4 ng/L, respectively. The operation of the shale gas site may have increased the concentrations of PAHs in the spring water of the southern tributary, but the affected range was limited and the site did not have an obvious influence on the water further downstream in the Baishui River. Compositional analysis showed that low-molecular-weight PAHs (LMW-PAHs) accounted for 59%-82% of PAHs in water and 15%-42% of PAHs in sediments and soils. The source analysis results showed that the largest contributors to PAHs in the study area were petrogenic and petroleum combustion sources (37.3%), followed by coal and biomass combustion (31.9%), and traffic emission (30.8%). Multiple linear regression (MLR) analysis revealed that spring water from the southern tributary (p < 0.01) and western tributary (p < 0.01) contributed 41.9% and 29.0%, respectively, of PAHs in the river water of the Baishui River. Soils (p < 0.01) contributed 38.9% of the PAHs in the sediments. These results indicated that PAHs could be transported further to downstream water under the influence of the groundwater system and could also be transported from recharge zone soils to spring sediments through surface or subsurface transport processes.
Conclusion
This study provides a system-scale characterization of PAH occurrence, source signatures, and multi-media transport processes in a karst aquifer system affected by shale gas exploitation. The findings advance understanding of contaminant migration in structurally complex karst aquifers and highlight the critical role of groundwater–surface water interactions in regulating downstream water quality. The results deliver a scientific basis for groundwater pollution prevention, risk management, and sustainable resource protection in shale gas-producing karst regions.
- polycyclic aromatic hydrocarbons (PAHs) /
- shale gas exploitation /
- source analysis /
- transport characteristics /
- hydrogeological conditions

HTML全文

图 1 研究区采样点(a)与水文地质图(b)

Figure 1. Sampling sites (a) and hydrogeological map (b) at the study area

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图 2 研究区水体(a)、土壤与沉积物(b) PAHs的含量

Figure 2. Concentrations of PAHs in water (a), soils and sediments (b) at the study area

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图 3 研究区不同介质中各环PAHs的平均组分占比

Figure 3. Average composition proportions of PAHs with different ring numbers in different media at the study area

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图 4 研究区土壤和沉积物中BaA/(BaA + Chry)−Fla/(Fla + Pyr) (a) 和InP/(InP + BghiP)−Fla/(Fla + Pyr) (b)比值

Figure 4. Plots of characteristic ratios of BaA/(BaA + Chry) vs. Fla/(Fla +Pyr) (a) and InP/(InP + BghiP) vs. Fla/(Fla + Pyr) (b) in soils and sediments at the study area

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图 5 研究区土壤与沉积物中PAHs的来源贡献

Figure 5. Contributions of PAH sources in soils and sediments at the study area

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图 6 研究区不同介质中PAHs组成的相关性分析（*表示显著相关性，p < 0.01）

Figure 6. Correlation analysis of PAH composition in different media at the study area

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图 7 受页岩气开采影响下的PAHs在岩溶系统中迁移示意图

Figure 7. Schematic diagram of transport processes of PAHs in karst system affected by shale gas exploitation

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