| KTiOPO4单晶膜钾离子选择性电极的研究 |
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| 引用本文： | 刘学勇,马长勤,蒋德华,沈静兰. KTiOPO4单晶膜钾离子选择性电极的研究[J]. 化学学报, 1995, 53(8): 801-804 |
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| 作者姓名： | 刘学勇 马长勤 蒋德华 沈静兰 |
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| 作者单位： | 山东大学化学学院 |
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| 摘 要： | 本文采用KTiOPO4单晶薄片作为离子活性传感膜, 制备了钾离子选择性电极。20℃时, 其线性响应范围为1.2×10^-^5～1.0mol.dm^-^3氯化钾溶液, 平均响应斜率为58mV/-lgak, 对钠离子的电位选择性系数为4.0×10^-^4。该电极的优点是电极斜率受酸度变化影响小, 稳定性和重现性好, 寿命长。
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| 关 键 词： | 离子选择电极 单晶 光学材料 磷酸氧钛钾 电极斜率 电位选择系数 |
Study on potassium-selective electrode using KTiOPO4 single crystal membrane as an ion carrier |
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| LIU XUEYONG,MA CHANGQIN,JIANG DEHUA,SHEN JINGLAN. Study on potassium-selective electrode using KTiOPO4 single crystal membrane as an ion carrier[J]. Acta Chimica Sinica, 1995, 53(8): 801-804 |
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| Authors: | LIU XUEYONG MA CHANGQIN JIANG DEHUA SHEN JINGLAN |
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| Abstract: | A new potassium ion selective electrode is proposed, in which the KTiOPO4 single crystal membrane is used as the electroactive material. The slope of response is determined to be 58mV/-lgak by means of computer fitting. The selective coefficients in relation to Na^+ is 4.0 ×10^-^4. The advantages of this electrode are that its slope can be hardly influenced by the variation of the pH value; its stability, repeatability and its long ilfetime as well. |
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| Keywords: | ION SELECTIVE ELECTRODE SINGLE CRYSTALS OPTICAL MATERIAL |
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