| 温度对水中碳酸平衡的影响浅析 |
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| 引用本文： | 闫志为,刘辉利,陶宗涛. 温度对水中碳酸平衡的影响浅析[J]. 中国岩溶, 2011, 30(2): 128-130. DOI: 10.3969/j.issn.1001-4810.2011.02.002 |
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| 作者姓名： | 闫志为 刘辉利 陶宗涛 |
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| 作者单位： | 1.桂林理工大学环境科学与工程学院；广西环境工程与保护评价重点实验室 |
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| 基金项目： | 广西自然科学基金项目(桂科自0991249) |
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| 摘 要： | 本文通过理论分析和计算探讨了0～100℃范围内不同温度下的碳酸平衡问题,分析了H2CO3*、HCO3-和CO32-三种碳酸在不同温度和pH条件下的水中所占比例及分布规律。认为0～100℃范围内pH0在8.60～8.22之间变化,变化范围较小;三种碳酸在不同温度下随pH变化过程中所占比例存在差异,但差异也不大;在0～100℃范围内不管温度高低,均表现出酸性水中H2CO3*占优势,碱性水中CO32-占优势,偏酸、偏碱及中性水中HCO3-占优势;在较低pH下由于水中CO32-含量很少,因此用常规方法一般是难以检测到的。
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| 关 键 词： | 温度 碳酸平衡 岩溶 |
| 收稿时间： | 2011-03-02 |
Temperature effect on carbonic acid balance in water |
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| YAN Zhi-wei,LIU Hui-li and TAO Zong-tao. Temperature effect on carbonic acid balance in water[J]. Carsologica Sinica, 2011, 30(2): 128-130. DOI: 10.3969/j.issn.1001-4810.2011.02.002 |
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| Authors: | YAN Zhi-wei LIU Hui-li TAO Zong-tao |
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| Affiliation: | 1.College of Environmental Science and Engineering, Guilin University of Technology；The Guangxi Key Laboratory of Environmental Engineering, Protection and Assessment2.College of Environmental Science and Engineering, Guilin University of Technology |
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| Abstract: | Carbonic acid balance at 0~100 ℃ is studied based on theoretical analysis and calculation.Proportion and distribution of H2CO3＊,HCO3-and CO32-in water at different temperature and pH value are elucidated.It is believed that the pH0 ranges slight,between 8.60~8.22 within 0~100 ℃,and that the proportion of three carbonates accounting for different ratios with the changes of the pH,but the difference is small.At any temperature between 0 ℃ and 100℃,H2CO3＊ dominates in acidic water,while CO32-in alkaline water and HCO3-in low acidic,low alkaline and neutral water.It is difficult for CO32-determination with traditional method for its low concentration under low pH value. |
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| Keywords: | temperature carbonic acid balance karst |
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