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| 双硫腙修饰光极测定汞(Ⅱ)的研究 | |
| 引用本文： | 吕鉴泉,夏利君,邹欣平,何锡文. 双硫腙修饰光极测定汞(Ⅱ)的研究[J]. 湖北师范学院学报(自然科学版), 2002, 22(2): 1-9 |
| 作者姓名： | 吕鉴泉 夏利君 邹欣平 何锡文 |
| 作者单位： | 1. 南开大学,化学系,天津,300071;湖北师范学院,化学系,黄石,435002 2. 湖北师范学院,化学系,黄石,435002 3. 南开大学,化学系,天津,300071 |
| 基金项目： | the National Science foundation of China(Project2 9 975 0 14 )，the Science Foundation of the Education Department of Hubei Province(Project99 B0 0 8) |
| 摘 要： | 以双硫腙为探针构造了PVC膜修饰光极,就该光极的识别机理,酸度、响应时间、选择性等对光度测定的影响和光极再生方法进行了探讨,建立了一种新型的Hg2+离子选择性光极测定方法.结果表明,该修饰光极在pH4.5的缓冲溶液中对汞离子有灵敏的响应,测量范围0～10-5moll-1,检测限达3.5×10-7moll-1,可应用于生活废水中汞离子的测定. |
| 关 键 词： | 汞离子 含量测定 双硫腙 PVC膜修饰光极 离子选择性光极测定方法 识别机理 光极再生 |
Determintation of Mercury( Ⅱ )Ion Using a New Bulk Optode Membrane Based on Dithizone |
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| Abstract. Determintation of Mercury( Ⅱ )Ion Using a New Bulk Optode Membrane Based on Dithizone[J]. Journal of Hubei Normal University(Natural Science), 2002, 22(2): 1-9 | |
| Authors: | Abstract |
| Abstract: | An ionic selective bulk optode for Hg2+ based on a lipophilized metal ion-chelating reagent [dithizone] dissolved in an o-NPOE plasticized PVC membrane has been developed. In the measuring range of from 0 to 10-5mol @ L-1 Hg2+ at pH4.5,the absorbance response shows a good correlation with the theoretically derived formulae. The limit of detection is 3.5 × 10-7mol @ L-1.The characteristic of the optode towards Hg2+ in B-R pH buffer solution ,such as response time ,reproducibility,lifetime ,selectivity and regenerating method,is investigated. The optode is applied for the detection of Hg2+ in tap water. |
| Keywords: | optode dithizone analysis mercury ion |
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