3’-(2,5,8-三氧杂壬基)-苯并-12-冠-4为活性物质的PVC膜锂离子选择性电极的研制  

The Preparation of Lithium Selective PVC Membrane Electrode Based on 3'-(2, 5 , 8-Trioxyheterononyl)-Benzo-12-Crown-4 as the Active Material

作　　者：仰蜀薰[1] 马万红[1] 卢晓华 胡平 黄枢[2] 田宝芝[2] 

机构地区：[1]郑州大学化学系,郑州450052 [2]四川大学化学系,成都610064

出　　处：《化学传感器》1998年第2期26-29,共4页Chemical Sensors

摘　　要：冠醚类化合物中性载体锂离子选择性电极,近年来有较大的发展,其中12-冠-4及其衍生物为活性物质的电极是受到重视的一类。本文以新合成的3’-(2,5,8-三氧杂壬基)-苯并-12-冠-4为活性物质,以磷酸三丁脂为增塑剂,制成PVC膜电极,研究了它对锂离子响应的性能;如响应特性,电极电位与pH值的关系,电极的选择性,再现性,稳定性,响应时间,电极内阻以及电极寿命等。This paper reports the crown ether PVC membrane lithium electrode which have been prepared using 3'-(2 , 5 ,8-trioxyheterononyl)-Benzo-12-Crown-4 as the active material, tributyl phosphate as the plasticizer. It shows Nernstain response to lithium ions in the range of 1×10 4 -1×10 -1 mol· L-1 with the average slope 64. 3mV/decade. The selectively coefficients KLipot+Na+,KLipot+,K+,KLipot+,NH4,KLipot+,Ca2r and KLipot+,Mg2+ were 7. 9×10-3, 2. 9×10-3, 3.0× 10 3,1.7×10 3and 9.8×10-4, respectively. The respones-time, reproducibility, and stability of the electrode are satisfactory.

关 键 词：聚氯乙烯 膜电极 离子选择电极 

分 类 号：O657.15[理学—分析化学] TQ325.307[理学—化学]