| 基于离子液体的硫酸根离子选择电极的研究 |
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| 引用本文： | 张理,李雪,陈娟,杨民民,秦玉. 基于离子液体的硫酸根离子选择电极的研究[J]. 分析科学学报, 2012, 28(1): 11-15 |
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| 作者姓名： | 张理 李雪 陈娟 杨民民 秦玉 |
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| 作者单位： | 1. 南京药石药物研发有限公司,江苏南京,210061
2. 南京大学化学化工学院,江苏南京,210093 |
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| 摘 要： | 将离子液体BMIMPF6应用于传感膜中制备硫酸根选择性电极,研究发现离子液体在电极中不仅能够提高传感膜的介电常数和传导速率,还与硫酸根离子发生相互作用,起到载体的功能。利用离子液体和硫脲的协同作用制备的电位传感器,对硫酸根离子在10-5～10-2 mol/L范围内有能斯特响应,同时具有pH干扰小,重复性好,响应时间快等特点,能够用于环境和生物医疗检测。
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| 关 键 词： | 离子液体 硫酸根检测 离子选择电极 |
Preparation of Sulfate Ion Selective Electrodes with Ionic Liquid 1-Butyl-3-methylimidazolium Hexafluorophosphate and Thiourea |
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| ZHANG Li , LI Xue , CHEN Juan , YANG Min-min , QIN Yu. Preparation of Sulfate Ion Selective Electrodes with Ionic Liquid 1-Butyl-3-methylimidazolium Hexafluorophosphate and Thiourea[J]. Journal of Analytical Science, 2012, 28(1): 11-15 |
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| Authors: | ZHANG Li LI Xue CHEN Juan YANG Min-min QIN Yu |
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| Affiliation: | 1.PharmaBlock(Nanjing) R&D Co.Ltd,Nanjing 210061; 2.School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210093) |
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| Abstract: | A sulfate ion-selective electrode with an imidozalium type of ionic liquid as new additive had been developed.The sensing membrane containing plasticizer,poly(vinyl chloride)(PVC),thiourea,anion exchanger and the ionic liquid(BMIMPF6) was drop-cast directly on a solid substrate to form the electrode.Compared to traditional anion-selective sensors,the addition of BMIMPF6 showed much improved selectivity towards highly hydrophilic sulfate ion over other lipophilic anions such as NO-3,SCN-,and ClO-4.In addition,this sensor showed wide detection range(10-5~10-2 mol/L) and short response time toward sulfate ion. |
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| Keywords: | Ionic liquids Sulfate ion detection Ion-selective electrode |
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