新型Schiff碱双核铜(Ⅱ)配合物为载体的水杨酸根离子电极的研究  

New Schiff Base Dinuclear Copper(Ⅱ)Complex as Carriers for Salicylate-selective Electrode

作　　者：孙志勇[1] 向灿辉[1] 冯丽娟[1] 邓镇涛[1] 

机构地区：[1]遵义医学院珠海校区化学教研室,广东珠海519041

出　　处：《分析科学学报》2010年第6期697-700,共4页Journal of Analytical Science

基　　金：遵义医学院珠海校区科研启动基金(KY200604)

摘　　要：研究了5-溴水杨醛缩三乙烯四胺双核铜(Ⅱ)配合物为载体的高选择性水杨酸根离子中性膜电极。该电极对水杨酸根离子(Sal-)具有优良的电位响应特性并呈现出反Hofmeister选择性行为,其选择性次序为:Sal->ClO4->SCN->I->NO3->Br->SO42->Ac->NO2->Cl->SO23-。电极在pH=5.0的磷酸盐缓冲体系中,与Sal-在4.0×10-6～1.0×10-1mol/L浓度范围内呈近能斯特响应,斜率为58.0mV/dec(28℃),检出限为1.0×10-6mol/L。采用紫外可见光谱技术研究了电极响应机理。将该电极应用于药品分析,结果令人满意。A new salicylate-selective electrode based on 5-bromosalicylaldehyde triethyleneteramine dinuclear copper（Ⅱ）complex[Cu（Ⅱ）2-BSTT]as neutral carrier is studied,which displays an excellent electric potential response and an anti-Hofmeister selectivity sequence as：10-.The electrode exhibits Nernstian potential linear range to salicylate concentration from 1.0×10^-1 to 4.0×10^-6 mol/L with a detection limit of 1.0×10^-6 mol/ L and a slope of 58.0mV/dec in pH=5.0phosphorate buffer solution at 28℃.The electrode response mechanism is studied with the UV spectroscopy.The electrode has been applied in medicine analysis with a satisfactory result.

关 键 词：5-溴水杨醛缩三乙烯四胺 水杨酸根离子 离子选择性电极 中性载体 

分 类 号：O657.15[理学—分析化学]