| 豫北山前平原深层地下水硫酸盐来源与污染途径的同位素示踪 |
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| 引用本文： | 邹霜,张东,李小倩,吴洋洋,李玉红,朱双双,刘运涛,段慧真,郭文静.豫北山前平原深层地下水硫酸盐来源与污染途径的同位素示踪[J].地球科学,2022,47(2):700-716. |
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| 作者姓名： | 邹霜 张东 李小倩 吴洋洋 李玉红 朱双双 刘运涛 段慧真 郭文静 |
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| 作者单位： | 1.河南理工大学资源环境学院, 河南焦作 454000 |
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| 基金项目： | 国家自然科学基金项目(Nos.42073009,41573095,41103053)； |
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| 摘 要： | 豫北山前冲洪积平原深层地下水硫酸盐(SO42?)呈现持续增高趋势,但其机制仍不清楚.为探讨深层地下水SO42?来源与污染机制,选择山前冲洪积平原不同赋存条件深层地下水作对比分析,借助水体水化学、氢氧同位素(δDH2O和δ18OH2O)、硫酸盐硫和氧同位素(δ34SSO4和δ18OSO4),示踪人类活动影响下深层地下水S...
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| 关 键 词： | 硫酸盐来源 地下水硫酸盐细菌还原 硫和氧同位素示踪 贝叶斯同位素混合模型 山前冲洪积平原 水文地质 |
| 收稿时间： | 2021-04-19 |
Sources and Pollution Pathways of Deep Groundwater Sulfate Underneath the Piedmont Plain in the North Henan Province |
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| Zou Shuang,Zhang Dong,Li Xiaoqian,Wu Yangyang,Li Yuhong,Zhu Shuangshuang,Liu Yuntao,Duan Huizhen,Guo Wenjing.Sources and Pollution Pathways of Deep Groundwater Sulfate Underneath the Piedmont Plain in the North Henan Province[J].Earth Science-Journal of China University of Geosciences,2022,47(2):700-716. |
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| Authors: | Zou Shuang Zhang Dong Li Xiaoqian Wu Yangyang Li Yuhong Zhu Shuangshuang Liu Yuntao Duan Huizhen Guo Wenjing |
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| Abstract: | Deep groundwater sulfate in the piedmont alluvial plain in Jiaozuo had been increasing, however, the mechanism is still unclear. To illustrate the pollution mechanism of deep groundwater, deep groundwater in different hosting conditions was sampled to compare, and hydro-chemical compositions, hydrogen and oxygen isotopes (δDH2O and δ18OH2O), sulfate sulfur and oxygen isotopes (δ34SSO4 and δ18OSO4) were determined to constrain the sulfate sources, pollution pathways and sulfate bacterial reduction processes with the presence of anthropogenic activities. The results indicated that there were small variations of monthly hydro-chemical and isotope compositions in respective deep groundwaters, but large spatial differences were found in the hydro-chemical compositions of these deep groundwater. Sulfate in the undisturbed deep groundwater was mainly derived from atmospheric deposition, pyrite oxidation and gypsum dissolution, and the bacterial sulfate reduction obviously occurred; There were two kinds of pollution pathways and processes in the polluted deep groundwater. First was that in the piedmont where deep groundwater was recharged, due to no obvious aquifuge between them, the precipitation and river water containing industrial wastes could easily infiltrate into deep groundwater with the result of increasing sulfate concentrations. Second was that in the discharge zone, increased deep groundwater sulfate was related with leapfrog recharge from the above aquifer where sulfate was rich, and the leapfrog recharge was due to overwhelming deep groundwater pumping. Our results well illustrated the sulfate pollution mechanism in deep groundwater underneath the piedmont alluvial plain in Jiaozuo, and provided vitally scientific evidences on effective management and protection of deep groundwater source. |
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