| 恒pH自动滴定系统及其在土壤表面化学研究中的应用 |
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| 引用本文： | 周世伟,张效年,方晖,高怀.恒pH自动滴定系统及其在土壤表面化学研究中的应用[J].土壤学报,2002,39(6):872-876. |
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| 作者姓名： | 周世伟 张效年 方晖 高怀 |
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| 作者单位： | 1. 中国科学院南京土壤研究所,南京,210008
2. 现代声学国家重点实验室,南京大学声学所,南京,210093 |
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| 基金项目： | 国家自然科学基金(49971046)和国家自然科学基金重点项目(49831005)资助 |
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| 摘 要： | 利用MIA 3型自动分析系统的硬件 ,根据研究的需要开发了一个专用软件 ,建成适用于恒pH自动滴定系统。并对一个含氧化铁很高的砖红壤的表面羟基的释放过程进行了测试应用。结果显示 ,在Na2 SO4 溶液中 ,羟基释放量明显受pH和SO2 - 4加入量的影响 ,羟基释放量的动态变化很好地符合Elovich方程。
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| 关 键 词： | 恒pH滴定系统 砖红壤 表面羟基释放 OH-释放动力学 |
| 收稿时间： | 2001/5/26 0:00:00 |
| 修稿时间： | 2001年5月26日 |
CONSTANT pH AUTOTITRATION SYSTEM AND ITS APPLICATION TO STUDY OF SOIL SURFACE CHEMISTRY |
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| Zhou Shi-wei,Zhang Xiao-nian,Fang Hui and Gao Huai.CONSTANT pH AUTOTITRATION SYSTEM AND ITS APPLICATION TO STUDY OF SOIL SURFACE CHEMISTRY[J].Acta Pedologica Sinica,2002,39(6):872-876. |
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| Authors: | Zhou Shi-wei Zhang Xiao-nian Fang Hui and Gao Huai |
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| Institution: | Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008;Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008;State Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093;State Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093 |
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| Abstract: | By use of the hardware of MIA 3 autoanalytical system, we developed a special software according to the need of research, and set up an autotitration system which can be used in constant pH, and tried to apply it to the telease process of surface hydroxyl of a latosol with great iron oxidex. The results conform that the quantities of hydroxyl released are affected by pH and the amount of SO 2- 4added in Na 2SO 4 solution, and that the dynamic changes of hydroxyl release accord with Elovich equations. |
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| Keywords: | Constant pH titration system Latosol Surface hydroxyl release Kinetics of OH - released |
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