| 海水中钙的电位滴定 |
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| 引用本文： | 谢式南,陈国华,王建华. 海水中钙的电位滴定[J]. 中国海洋大学学报(自然科学版), 1998, 0(4) |
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| 作者姓名： | 谢式南 陈国华 王建华 |
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| 作者单位： | 青岛海洋大学化学化工学院，青岛教育学院生化系 |
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| 摘 要： | 钙离子选择性电极为指示电极，饱和甘汞电极作参比，用硼砂盐缓冲液控制ｐＨ，以ＥＧ－ＴＡ为滴定剂进行电位滴定。与现行用ＧＨＡ为指示剂、ＥＧＴＡ为滴定剂的络合滴定法相比，可减小络合滴定中目测终点的人为误差，故测量精度优于０．０８％。
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| 关 键 词： | 钙离子选择电极；钙；海水；电位滴定 |
Potentiometric Titration of Calcium in Seawater |
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| Xie Shinan Chen Guohua. Potentiometric Titration of Calcium in Seawater[J]. Periodical of Ocean University of China, 1998, 0(4) |
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| Authors: | Xie Shinan Chen Guohua |
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| Abstract: | By using calcium ion selective electrode (Ca ISE) as indicating electrode, saturated calomel electrode (SCE) as reference electrode and EGTA as titrant calcium in seawater was determined by potentiometric titration in borate buffer solution. This method can reduce observation errors in the determination of the end point, and thus provides a better analytical precision(<0.08%)than normal complexometric titration. |
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| Keywords: | calcium ion selective electrode calcium seawater potentiometric titration |
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