铕(Ⅲ)-噻吩甲酰三氟丙酮络合物的电化学性质  

Electrochemical property of thenoyltrifluoroacetone-Eu(Ⅲ) complex

作　　者：李丽敏[1] 于晓梅[1] 孟庆国[1] 

机构地区：[1]潍坊学院化学系,山东潍坊261061

出　　处：《山东大学学报（理学版）》2005年第2期101-103,共3页Journal of Shandong University(Natural Science)

基　　金：山东省教育厅科技开发项目 (0 3A5 1)

摘　　要：在pH =4 .7的0 .1mol LHAc - 0 .1mol LNaAc缓冲溶液中,Eu(Ⅲ)与噻吩甲酰三氟丙酮形成的络合物是电活性的,于- 1.6V (vs.SCE)产生较灵敏的极谱峰,检出限为1.0 μmol·L- 1 .利用线性扫描极谱法和循环伏安法探讨了极谱峰的电化学性质及电极反应机理.实验结果表明:Eu(TTA) 3的极谱峰有吸附性质,是不可逆的.In a buffer solution of 0.1?mol/L HAc and 0.1?mol/L NaAc at pH = 4.7, Eu (TTA)_3 produced a sensitive reduction peak. The peak potential is at -1.6?V(vs.SCE). Its detection limit is found to be 1.0?μmol/L. The electrochemical behaviour of reduction peak was investigated by using linear-sweep polarography and cyclic voltammetry. The electrode reduction process of Eu (TTA)_3 at Hg electrode is irreversible with adsorptive characteristics.

关 键 词：噻吩甲酰三氟丙酮 铕(Ⅲ) 不可逆性 吸附性 

分 类 号：O657.14[理学—分析化学]