| 三乙醇胺对聚邻苯二胺pH敏感电极性能的影响 |
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| 引用本文： | 石永伉,张建民,常敬杭,兰梦.三乙醇胺对聚邻苯二胺pH敏感电极性能的影响[J].分析试验室,2009,28(10). |
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| 作者姓名： | 石永伉 张建民 常敬杭 兰梦 |
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| 作者单位： | 郑州大学化学系,郑州,450001 |
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| 摘 要： | 在含有邻苯二胺和三乙醇胺(TEA)的酸性溶液中,用循环伏安法(CV)在铂电极上制备聚邻苯二胺(PoPD)薄膜.通过对该薄膜进行深入的电化学分析,并将结果与无三乙醇胺参与的聚邻苯二胺的性能进行比较,发现在三乙醇胺参与下得到的聚邻苯二胺薄膜在铂电极表现出更好的粘附性,同时在氢离子选择性电极方面表现出优良的性能.在pH 2～13范围内具有良好的Nernst响应,直线斜率为59.62 mV/pH,相关系数达0.99以上,碱性条件下响应时间可缩短至30 s左右.该电极对大多数普通干扰物具有较好的选择性,可用于实际样品的测试.
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| 关 键 词： | 聚邻苯二胺 三乙醇胺 pH选择性电极 |
The effect of triethanolamine on the properties of the PoPD-modified pH sensor |
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| SHI Yong-kang,ZHANG Jian-min,CHANG Jing-hang,LAN Meng.The effect of triethanolamine on the properties of the PoPD-modified pH sensor[J].Chinese Journal of Analysis Laboratory,2009,28(10). |
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| Authors: | SHI Yong-kang ZHANG Jian-min CHANG Jing-hang LAN Meng |
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| Institution: | Department of Chemistry;Zhengzhou University;Zhengzhou 450001 |
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| Abstract: | At room temperature,the poly-o-phenylenediamine(PoPD) thin films were modified on the surface of platinum electrode in acid media in the presence of triethanolamine(TEA) using an electrochemical method.The polymer films were further characterized by electrochemical analysis and the results were compared with those obtained in the absence of TEA.The presence of TEA showed improvement in adherence,reproducibility and stability of the films.The potential equilibrium response time was faster.In the alkali condi... |
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| Keywords: | Poly-o-phenylenediamine(PoPD) Triethanolamine(TEA) pH sensor |
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