| 硫代硫酸钠标准溶液浓度不稳定现象初探 |
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| 引用本文： | 罗桂甫,戴华芳.硫代硫酸钠标准溶液浓度不稳定现象初探[J].中南林业科技大学学报,2004,24(4):132-134. |
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| 作者姓名： | 罗桂甫 戴华芳 |
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| 作者单位： | 湖南化工职业技术学院，湖南化工职业技术学院 湖南株洲412004，湖南株洲412004 |
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| 摘 要： | 溶液的酸度、二氧化碳、空气、微生物、光照及人为和环境等因素对硫代硫酸钠标准溶液浓度的稳定性有很大的影响,继而造成氮肥生产中有关碘量分析法的误差,通过控制溶液的pH值,防止二氧化碳气体的渗入,加强对分析人员的管理,可从根本上解决生产实际中硫代硫酸钠标准溶液出现的析硫现象,保持其浓度的稳定性.
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| 关 键 词： | 化学 硫代硫酸钠 析硫 二氧化碳 空气 微生物 pH值 |
| 文章编号： | 1000-2502(2004)04-0132-03 |
| 修稿时间： | 2004年2月13日 |
A Preliminary Study of the Unsteadiness of the Concentration of Sodium Thio-sulfate Standard Solution |
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| LUO Gui-fu,DAI Hua-fang.A Preliminary Study of the Unsteadiness of the Concentration of Sodium Thio-sulfate Standard Solution[J].Journal of Central South Forestry University,2004,24(4):132-134. |
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| Authors: | LUO Gui-fu DAI Hua-fang |
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| Abstract: | Acidity of the solution, carbon dioxide, air, microbes, illumination and personal and environmental factors all have a great influence upon the stability of sodium thio-sulfate standard solution, and thus cause errors in iodo-metric analyses concerned in the manufacture of nitrogenous fertilizers. By buffering the pH value of the solution, preventing carbon dioxide from penetrating into the solution, and strengthening the management of the analysts, sulfur separation from sodium thio-sulfate standard solution in production practice can be fundamentally solved, and the concentration of the solution can be kept stable. |
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| Keywords: | chemistry sodium thio-sulfate sulfur separation carbon dioxide air microbe pH value |
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