| 氯离子电位滴定法终点的计算 |
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| 引用本文： | 张二华,陈少瑾,陈宜菲. 氯离子电位滴定法终点的计算[J]. 广东化工, 2006, 33(5): 48-50 |
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| 作者姓名： | 张二华 陈少瑾 陈宜菲 |
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| 作者单位： | 韩山师范学院,环境化学应用技术研究所,广东,潮州,521041 |
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| 摘 要： | 用银离子选择性电极做响应电极,以AgNO3滴定水溶液中的氯离子(Cl-),研究了不同计算方法对终点时AgNO3用量的影响,以及离子强度、有机溶剂等因子对滴定曲线和滴定终点的影响。研究表明:终点的计算方法不同对结果影响显著,离子强度及有机溶剂会影响滴定曲线的形状,但不会影响滴定终点的确定。
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| 关 键 词： | 氯 电位滴定 终点 |
| 收稿时间： | 2006-03-07 |
| 修稿时间： | 2006-03-07 |
End-point Determinations in Potentiometric Titrations of Chloride |
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| Zhang Erhua,Chen Shaojin,Chen Yifei. End-point Determinations in Potentiometric Titrations of Chloride[J]. Guangdong Chemical Industry, 2006, 33(5): 48-50 |
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| Authors: | Zhang Erhua Chen Shaojin Chen Yifei |
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| Affiliation: | Research Institute of Environmental Chemistry and Technology, Hanshan Normal College, Chaozhou 521041, China |
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| Abstract: | Silver ion selective electrode was utilized in the potential titrimetric measurements of chloride in water.Several methods of end-point determination were evaluated to choose a method with the highest merits.Meanwhile,the effects of ionic strength and organic solvents on the titration were also studied.Mathematic treatments of the titration data showed that different methods of end-point calculations could lead to significantly different results.Solution ionic strength and organic solvents were capable of changing the shapes of the titration curves but hardly affecting the end-points. |
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| Keywords: | chloride potentiometric titration end-point determination |
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