Department of Chemistry, Tehran University, P.O. Box 14155 6455, Tehran, Iran.
Talanta. 2003 Mar 1;59(3):613-9. doi: 10.1016/s0039-9140(02)00573-8.
A PVC-based sensor for La(3+) ions based on N-[hexahydrocyclopentapyrol-2((1H)yl)amino]carbonyl]-4-methyl benzene sulfonamide (gliclazide) as a novel carrier was prepared. The electrode exhibits a Nernstian response for La(3+) over a wide concentration range (1.0x10(-1)-1.0x10(-6) M) with a slope of 20.1 mV per decade. The limit of detection is 8.0x10(-7) M. The sensor has a very short response time (<15 s) and a useful working pH range of 4.0-8.0. The proposed membrane sensor shows excellent discriminating ability towards La(3+) ions with regard to several alkali, alkaline earth, transition and heavy metal ions. The electrode was successfully applied for determination of La(3+) in binary mixtures.
一种基于 N-[六氢环戊并吡咯-2((1H)基)氨基]羰基]-4-甲基苯磺酰胺（格列齐特）的新型载体的 La(3+)离子 PVC 基传感器被制备。该电极对 La(3+)表现出宽浓度范围（1.0x10(-1)-1.0x10(-6) M）的 Nernstian 响应，斜率为每十年 20.1 mV。检测限为 8.0x10(-7) M。传感器具有非常短的响应时间（<15 s）和有用的工作 pH 值范围为 4.0-8.0。所提出的膜传感器对 La(3+)离子具有出色的选择性，对几种碱金属、碱土金属、过渡金属和重金属离子具有良好的区分能力。该电极成功地用于二元混合物中 La(3+)的测定。
