| 番红花红修饰铅笔芯电极的制备及其在果汁酸度测定中的应用 |
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| 引用本文： | 韦庆敏,罗济文,陈宪明,姚燕春.番红花红修饰铅笔芯电极的制备及其在果汁酸度测定中的应用[J].玉林师范学院学报,2010,31(5):73-76. |
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| 作者姓名： | 韦庆敏 罗济文 陈宪明 姚燕春 |
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| 作者单位： | [1]玉林师范学院化学与生物系助教,广西玉林537000 [2]玉林师范学院化学与生物系教授,广西玉林537000 [3]玉林师范学院化学与生物系副教授,广西玉林537000 [4]玉林师范学院化学与生物系2006级学生,广西玉林537000 |
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| 摘 要： | 在含番红花红O的磷酸盐缓冲溶液中,用循环伏安法在经预处理的铅笔心电极上形成了番红花O聚合物薄膜,溶液的pH、扫描电位范围对修饰过程中有影响,在-1.0 V-0.0 V（vs Ag/Agcl）的扫描电位范围和酸性介质中形成的薄膜具有较高电活性和稳定性.根据过程的循环伏安曲线,对聚合的机理进行了讨论.利用该电极的pH响应性能,用扫描峰电位法测定果汁的酸度取得满意结果.
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| 关 键 词： | 番红花红O 铅笔芯 循环伏安法 酸度测定 |
Safranine Modified Pencil Electrodes and its application in Determination of Acidity of Fruit Juice |
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| WEI Qing-min,LUO Ji-wen,CHEN Xian-ming,YAO Yan-chun.Safranine Modified Pencil Electrodes and its application in Determination of Acidity of Fruit Juice[J].Journal of Yulin Teachers College,2010,31(5):73-76. |
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| Authors: | WEI Qing-min LUO Ji-wen CHEN Xian-ming YAO Yan-chun |
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| Institution: | 1.Lecturer,Dept.of Chemistry ＆ Biology,Yulin Normal University,Yulin,Guangxi 537000)(2.Professor,Dept. of Chemistry ＆ Biology,Yulin Normal University,Yulin,Guangxi 537000)(3.Associate Professor,Dept. of Chemistry＆Biology,Yulin Normal University,Yulin,Guangxi 537000)(4.Undergraduate,Dept. of Chemistry＆Biolog,Yulin Normal University,Yulin,Guangxi 537000) |
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| Abstract: | A safranine O（SO） polymer film was formed at pretreated pencil electrode by cyclic voltammetry scan.The modification process was influenced by pH of solution and canning potential range.In-1.0 V~0.0 V（vs Ag / Agcl） and acidic solution（pH=2.21）,the formed film had high electrical activity and good stability.The cation mechanism is discussed.Making use of the good linearit between pH and the peak potential,the acility of fruit juice was detected with satisfactory. |
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| Keywords: | Safranine O pencil core cyclic voltammetry acidity determination |
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