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| Highly Selective Salicylate Membrane Electrode Based on N,N＇- （Aminoethyl）ethylenediamide Bis（2-salicylideneimine） Binuclear Copper（Ⅱ） Complex as Neutral Carrier | |
| 引用本文： | 孙爱丽 柴雅琴 袁若 归国风. Highly Selective Salicylate Membrane Electrode Based on N,N＇- （Aminoethyl）ethylenediamide Bis（2-salicylideneimine） Binuclear Copper（Ⅱ） Complex as Neutral Carrier[J]. 中国化学, 2006, 24(7): 894-898. DOI: 10.1002/cjoc.200690170 |
| 作者姓名： | 孙爱丽 柴雅琴 袁若 归国风 |
| 作者单位： | Chongqing Key Laboratory of Analytical Chemistry, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China |
| 基金项目： | Project supported by the National Natural Science Foundation of China （No. 29705001） and the Natural Science Foundation of Chongqing City （Nos. CSTC-2004BB4149 and CSTC-2005BB4100）. |
| 摘 要： | A new ion selective electrode for salicylate based on N,N＇-（aminoethyl）ethylenediamide bis（2-salicylideneimine） binuclear copper（Ⅱ） complex [Cu（Ⅱ）2-AEBS] as an ionophore was developed. The electrode has a linear range from 1.0 × 10^-1 to 5.0 ×10^-7 mol·L^- 1 with a near-Nemstian slope of （ - 55 ±1 ） mV/decade and a detection limit of 2.0 × 10-7 mol·L^-1 in phosphorate buffer solution of pH 5.0 at 25 ℃. It shows good selectivity for Sal^- and displays anti-Hofmeister selectivity sequence： Sal^-〉SCN^-〉 ClO4^- 〉I^-〉 NO2^- 〉Br^-〉 NO3^- 〉Cl^-〉 SO3^2- 〉 SO4^2- The proposed sensor based on binuclear copper（Ⅱ）complex has a fast response time of 5-10 s and can be used for at least 2 months without any major deviation. The response mechanism is discussed in view of the alternating current （AC） impedance technique and the UV-vis spectroscopy technique. The effect of the electrode membrane compositions and the experimental conditions were studied. The electrode has been successfully used for the determination of salicylate ion in drug pharmaceutical preparations. |
| 关 键 词： | N N＇-（氨基乙烷基）乙烯二氨基二（2-亚水杨基亚胺）双核铜（Ⅱ）配合物 选择性 水杨酸盐 离子选择电极 |
| 收稿时间： | 2005-09-29 |
| 修稿时间： | 2005-09-292006-04-06 |
Highly Selective Salicylate Membrane Electrode Based on N,N′‐(Aminoethyl)ethylenediamide Bis(2‐salicylideneimine) Binuclear Copper(II) Complex as Neutral Carrier |
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| SUN, Ai-Li CHAI, Ya-Qin YUAN, Ruo GUI, Guo-Feng. Highly Selective Salicylate Membrane Electrode Based on N,N′‐(Aminoethyl)ethylenediamide Bis(2‐salicylideneimine) Binuclear Copper(II) Complex as Neutral Carrier[J]. Chinese Journal of Chemistry, 2006, 24(7): 894-898. DOI: 10.1002/cjoc.200690170 | |
| Authors: | SUN Ai-Li CHAI Ya-Qin YUAN Ruo GUI Guo-Feng |
| Abstract: | A new ion selective electrode for salicylate based on N,N′‐(aminoethyl)ethylenediamide bis(2‐salicylideneimine) binuclear copper(II) complex [Cu(II)2‐AEBS] as an ionophore was developed. The electrode has a linear range from 1.0×10?1 to 5.0×10?7 mol·L?1 with a near‐Nernstian slope of (?55±1) mV/decade and a detection limit of 2.0×10?7 mol·L?1 in phosphorate buffer solution of pH 5.0 at 25 °C. It shows good selectivity for Sal? and displays anti‐Hofmeister selectivity sequence:Sal?>SCN?>ClO?4>I?>NO?2>Br?>NO?3>Cl?>SO2?3>SO2?4. The proposed sensor based on binuclear copper(II) complex has a fast response time of 5–10 s and can be used for at least 2 months without any major deviation. The response mechanism is discussed in view of the alternating current (AC) impedance technique and the UV‐vis spectroscopy technique. The effect of the electrode membrane compositions and the experimental conditions were studied. The electrode has been successfully used for the determination of salicylate ion in drug pharmaceutical preparations. |
| Keywords: | N,N′‐(aminoethyl)ethylenediamide bis(2‐salicylideneimine) binuclear copper(II) neutral carrier salicylate ion‐selective electrode |
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