PVC-based cobalt and manganese phthalocyanine coated graphite electrodes for determination of thiocyanate

被引：43

作者：

Amini, MK ^{[1
]}

Shahrokhian, S ^{[1
]}

Tangestaninejad, S ^{[1
]}

机构：

[1] Univ Esfahan, Dept Chem, Esfahan 81744, Iran

来源：

ANALYTICAL LETTERS | 1999年 / 32卷 / 14期

关键词：

potentiometry; ionophores; thiocyanate selective electrode; cobalt phthalocyanine; manganese phthalocyanine; PVC; graphite rods;

D O I：

10.1080/00032719908543002

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Thiocyanate selective electrodes were prepared by incorporating cobalt and manganese phthalocyanines into plasticized ploy(vinyl chloride) membranes which were directly coated on the surface of graphite electrodes. A calibration plot with Nernstian slope for thiocyanate was observed over a linear range of five decades of concentration (1x10(-6)-1x10(-1) M). The electrode has a fast response time, very low detection limit (5x10(-7) M thiocyanate), is easy to prepare, and could be used for over a month. The proposed sensor revealed good selectivity for thiocyanate over several anions and could be used over a wide pH range. Applications of the electrode to the potentiometric titration of silver ion with thiocyanate and determination of thiocyanate in urine samples are reported.

引用

页码：2737 / 2750

页数：14

共 27 条

[1] ANION SELECTIVITY OF METALLOPORPHYRINS IN MEMBRANES [J].