| 再论极弱酸(碱)水溶液的直接测定 |
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| 引用本文： | 毕树平,章广宇,高鸿.再论极弱酸(碱)水溶液的直接测定[J].化学研究与应用,1991(3). |
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| 作者姓名： | 毕树平 章广宇 高鸿 |
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| 作者单位： | 南京大学化学系 210008 |
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| 摘 要： | 用通常的指示剂滴定法不能直接在水溶液中用强酸(碱)滴定极弱碱(酸)。陈淑萍等曾使用汞电极为工作电极,用指示剂切口的变化来指示交流示波极谱中和滴定的终点,在水溶液中直接进行极弱酸碱的滴定。但此方法存在以下缺点:(1)汞电极不适用于强酸性及氧化性溶液;(2)实验条件苛刻,要严格控制指示剂的滴数以确定滴定体积。庄建元等为了弥补汞电极的不足,进行了钻电极上的示波极谱中和滴定,但仅用HCl滴定了氨基比
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| 关 键 词： | 交流示波极谱滴定 极弱酸碱 |
DERECT TITRATION OF VERY WEAK ACIDS OR BASES IN AQUEOUS SOLUTION WITH STRONG BASES OR ACIDS |
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| Bi Shuping,Zhang Guangyu,Gao Hong Chemistry.DERECT TITRATION OF VERY WEAK ACIDS OR BASES IN AQUEOUS SOLUTION WITH STRONG BASES OR ACIDS[J].Chemical Research and Application,1991(3). |
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| Authors: | Bi Shuping Zhang Guangyu Gao Hong Chemistry |
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| Institution: | Bi Shuping,Zhang Guangyu,Gao Hong Chemistry Department,Nanjing University,Nanjing,210008 |
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| Abstract: | This paper reports a new method of titration for very weak acids and bases using the appearance of incisions on oscillopolarogram indicate the end-point. This method has the advantages of rapidity, simplicity, no indictor. needed as well as good precision. |
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| Keywords: | a c oscillopolarographic titration incision very weak acid and base |
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