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北京北部水源地水化学特征及硫同位素变化

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邢鑫, 季宏兵. 北京北部水源地水化学特征及硫同位素变化[J]. 环境化学, 2012, 31(6): 803-814.
引用本文: 邢鑫, 季宏兵. 北京北部水源地水化学特征及硫同位素变化[J]. 环境化学, 2012, 31(6): 803-814.
shu
XING Xin, JI Hongbing. Hydro-chemistry characteristics and sulfur isotope variation of the water in the water source area of northern Beijing[J]. Environmental Chemistry, 2012, 31(6): 803-814.
Citation: XING Xin, JI Hongbing. Hydro-chemistry characteristics and sulfur isotope variation of the water in the water source area of northern Beijing[J]. Environmental Chemistry, 2012, 31(6): 803-814.
shu

北京北部水源地水化学特征及硫同位素变化

  • 1.

    首都师范大学资源环境与旅游学院, 北京, 100048;

  • 2.

    中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550002

  • 基金项目:

    北京市教委项目(KM200910028017)

    中国科学院"百人计划"研究项目.

Hydro-chemistry characteristics and sulfur isotope variation of the water in the water source area of northern Beijing

  • 1.

    Capital Normal University, College of Resource Environment and Tourism, Beijing, 100048, China;

  • 2.

    Institute of Geochemistry Chinese Academy of Sciences, State Key Laboratory of Environmental Geochemistry, Guiyang, 550002, China

  • Fund Project:

  • 摘要: 分析了北京市北部水源地所在流域丰水期和枯水期的水化学特征和硫同位素变化.结果表明,研究区地表水pH值呈弱碱性,水化学组成以HCO3-和Ca2+为主,Mg2+和SO42-次之.通过对主离子组成的分析,发现研究区水化学特征的主要控制因素是岩石风化,其中绝大部分是受碳酸盐岩的影响.研究区内δ34S值在4.9‰—10.7‰之间,平均值为7.9‰,其中密云水库库区及潮河、白河δ34S平均值分别为8.7‰、6.0‰、8.2‰.研究区内SO42-离子浓度与δ34S值在一定程度上呈负相关,SO42-离子浓度十分集中,降水中的SO42-离子浓度很低,而δ34S值较高.根据质量守恒原理计算出硫元素来源于硫酸盐岩的溶解比例为30.72%—42.47%;来源于硫化物氧化的比例为21.74%—33.49%;来源于大气输入的比例为35.77%.
    Abstract: The hydrochemistry and sulfur isotope variation during both abundant and withered water period of northern Beijing water source were analyzed. The results show that the surface water pH in the research site is weakly alkaline and the main components of hydrochemistry are HCO3- and Ca2+, followed by Mg2+ and SO42-. Analysis of the main ion components suggests that the predominant factor of hydrochemistry is rock weathering, which is mostly related to the carbonate rocks. The average δ34S value across the research site is 7.9‰, ranging from 4.9‰ to 10.7‰, with 8.7‰,6.0‰ and 8.2‰ in Miyun Reservoir Area, Chaohe river, Baihe river respectively. In the whole region, despite very low sulfate concentration, δ34S value is of high level. So the source of sulfur can be calculated according to the law of conservation of mass, to which sulfate rock dissolution, sulfide oxidation, and atmosphere deposition have contributed 30.72%—42.47%, 21.74%—33.49%, and 35.77% respectively.
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出版历程
  • 收稿日期:  2011-04-08
邢鑫, 季宏兵. 北京北部水源地水化学特征及硫同位素变化[J]. 环境化学, 2012, 31(6): 803-814.
引用本文: 邢鑫, 季宏兵. 北京北部水源地水化学特征及硫同位素变化[J]. 环境化学, 2012, 31(6): 803-814.
shu
XING Xin, JI Hongbing. Hydro-chemistry characteristics and sulfur isotope variation of the water in the water source area of northern Beijing[J]. Environmental Chemistry, 2012, 31(6): 803-814.
Citation: XING Xin, JI Hongbing. Hydro-chemistry characteristics and sulfur isotope variation of the water in the water source area of northern Beijing[J]. Environmental Chemistry, 2012, 31(6): 803-814.
shu

北京北部水源地水化学特征及硫同位素变化

  • 1.  首都师范大学资源环境与旅游学院, 北京, 100048;
  • 2.  中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550002
  • 收稿日期:  2011-04-08
基金项目:

北京市教委项目(KM200910028017)

中国科学院"百人计划"研究项目.

摘要: 分析了北京市北部水源地所在流域丰水期和枯水期的水化学特征和硫同位素变化.结果表明,研究区地表水pH值呈弱碱性,水化学组成以HCO3-和Ca2+为主,Mg2+和SO42-次之.通过对主离子组成的分析,发现研究区水化学特征的主要控制因素是岩石风化,其中绝大部分是受碳酸盐岩的影响.研究区内δ34S值在4.9‰—10.7‰之间,平均值为7.9‰,其中密云水库库区及潮河、白河δ34S平均值分别为8.7‰、6.0‰、8.2‰.研究区内SO42-离子浓度与δ34S值在一定程度上呈负相关,SO42-离子浓度十分集中,降水中的SO42-离子浓度很低,而δ34S值较高.根据质量守恒原理计算出硫元素来源于硫酸盐岩的溶解比例为30.72%—42.47%;来源于硫化物氧化的比例为21.74%—33.49%;来源于大气输入的比例为35.77%.

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