Highly selective Cu(II) PVC membrane electrode based on 3,6,9,14-tetrathiabicyclo[9.2.1]tetradeca-11,13-diene as a suitable neutral ionophore

被引：51

作者：

Mashhadizadeh, MH

Mostafavi, A

Razavi, R

Shamsipur, M ^{[1
]}

机构：

[1] Razi Univ, Dept Chem, Khorramshahr, Iran

[2] Shahid Bahonar Univ, Dept Chem, Kerman, Iran

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2002年 / 86卷 / 2-3期

关键词：

copper ion-selective electrode; PVC membrane; thiacrown ether; potentiometry;

D O I：

10.1016/S0925-4005(02)00191-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

new PVC membrane electrode that is highly selective to Cu(II) ions was prepared by using 3,6, 9,14-tetrathiabicyclo[9.2.1]tetradeca-11,13-diene as a suitable neutral carrier. The electrode exhibits a Nernstian slope of 28 +/- mV per decade at 25 degreesC for Cu2+ ions over a wide concentration range (6.3 x 10(-7) to 2.5 x 10(-1) M). It has a response time of < 10 s and a detection limit of 3.2 x 10(-7) M. The proposed electrode revealed good selectivities over a wide variety of other cations including alkali, alkaline earth and transition metal ions and could be used for at least 2 months without any divergence in potential. It was applied to the direct determination and potentiometric titration of copper ions. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：222 / 228

页数：7

共 48 条

[1] Silver(I) complexes of the derivatized crown thioether ligands 3,6,9,12,15,18-hexathianonadecanol and 3,6,9,13,16,19-hexathiaicosanol. Determination of stability constants and the crystal structures of [Ag(19-aneS6-OH)][CF3SO3] and [Ag(20-aneS6-OH)][BF4] [J].