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| 基于硫氮杂冠醚离子载体的高选择性聚合物膜汞离子选择性电极 | |
| 引用本文： | 赵月前,张军,尹坦姬,丁家旺,秦伟. 基于硫氮杂冠醚离子载体的高选择性聚合物膜汞离子选择性电极[J]. 分析科学学报, 2012, 28(1): 1-5 |
| 作者姓名： | 赵月前 张军 尹坦姬 丁家旺 秦伟 |
| 作者单位： | 1. 中国科学院烟台海岸带研究所,中国科学院及山东省海岸带环境过程重点实验室,山东烟台264003;中国科学院研究生院,北京100049 2. 海南医学院热带医学与检验医学院,海南海口,571101 3. 中国科学院烟台海岸带研究所,中国科学院及山东省海岸带环境过程重点实验室,山东烟台264003 |
| 基金项目： | 中国科学院知识创新工程重要方向项目，国家自然科学基金，国家863计划 |
| 摘 要： | 以硫氮杂冠醚化合物为离子载体,制备了一种高选择性聚合物膜汞离子选择性电极.通过对电极膜的组成及活化条件进行优化,电极在3.0×10-8～1.0×10-4 mol/L的范围内对汞离子呈能斯特响应,响应斜率为31.2 mV/dec,检出限为2.0×10-8 mol/L.该电极对大多数常见的金属离子具有良好的选择性,并可作为指示电极用于电位滴定. |
| 关 键 词： | 汞离子 离子选择性电极 硫氮杂冠醚 |
Highly Selective Polymeric Membrane Ion-selective Electrode for Hg2+ Using Azathiacrown Ether as Ionophore |
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| ZHAO Yue-qian , ZHANG Jun , YIN Tan-ji , DING Jia-wang , QIN Wei. Highly Selective Polymeric Membrane Ion-selective Electrode for Hg2+ Using Azathiacrown Ether as Ionophore[J]. Journal of Analytical Science, 2012, 28(1): 1-5 | |
| Authors: | ZHAO Yue-qian ZHANG Jun YIN Tan-ji DING Jia-wang QIN Wei |
| Affiliation: | 1(1.Shandong Provincial Key Laboratory of Coastal Environmental Processes,Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003; 2.Graduate University of Chinese Academy of Sciences,Beijing 100049; 3.School of Tropical and Laboratory Medicine,Hainan Medical University,Haikou 571101) |
| Abstract: | A highly selective polymeric membrane Hg2+ electrode was developed in this study.The values of selectivity coefficients showed that most interfering ions had no significant interference with the determination of Hg2+.Calibration curves were obtained by using pH=4.40 HAc-NaAc buffer solution as background solution.The electrode showed a good linear response for Hg2+ over a wide concentration range from 3.0×10-8 to 1.0×10-4 mol/L,with a near-Nernstian slope of 31.2 ± 0.1 mV/dec and a detection limit of 2.0×10-8 mol/L.The proposed Hg2+-ISE has been successfully used for the titration of Hg2+ with EDTA. |
| Keywords: | Mercury Ion-selective electrode Azathiacrown ether |
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