| 锌离子选择电极及其检测微量元素的实验研究 |
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| 引用本文： | 胡卫军,王平.锌离子选择电极及其检测微量元素的实验研究[J].传感器与微系统,2008,27(5):55-57. |
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| 作者姓名： | 胡卫军 王平 |
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| 作者单位： | 1. 重庆工商大学,计算机科学与信息工程学院,重庆,400067
2. 浙江大学,生物医学工程与仪器科学学院,浙江,杭州,310027 |
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| 基金项目： | 浙江省国际合作计划重点资助项目 |
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| 摘 要： | 锌离子(Ⅱ)在低浓度时不易保持其自由离子的形态,以Zn络合平衡的基本原理为基础,结合采用Visual MINTEQ软件进行计算,讨论了Zn在溶液体系中的存在形态,从而获得稳定的低浓度的自由锌离子。通过锌离子选择电极(Zn-ISE)对所配置的缓冲溶液体系标定可知,在自由锌离子浓度高于10-8mol/L时,Zn-ISE仍然能够正常测量,从而将Zn-ISE的测量下限从10-5mol/L扩展到了10-8mol/L。
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| 关 键 词： | 络合 自由锌离子 锌离子选择电极 |
Experimental research on Zn ion selective electrode and measurement of minim element |
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| HU Wei-jun,WANG Ping.Experimental research on Zn ion selective electrode and measurement of minim element[J].Transducer and Microsystem Technology,2008,27(5):55-57. |
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| Authors: | HU Wei-jun WANG Ping |
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| Abstract: | The free Zn2+ is difficult to preserve in low concentration.The existing form of Zn in the solution system is discussed and the free Zn2+ with stable and low concentration are achieved by means of calculation of Visual MINTEQ software based on the complex equilibrium of Zn.After the calibration to the buffer solution with the Zn ion selective electrode(Zn-ISE),it seems that Zn-ISE can measure normally when the concentration of the free Zn2+ is higher than 10-8mol/L.The measurement limit of Zn-ISE can be extended from 10-5mol/L to 10-8mol/L. |
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| Keywords: | complex free Zn2+ Zn ion selective electrode(Zn-ISE) |
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