Lead-selective electrode based on the misfit compound (PbS)1.18TiS2

被引：0
|
作者：
Velikanova, TV [1 ]
Titov, AN [1 ]
Shishmintseva, NN [1 ]
机构：
[1] Ural State Univ, Yekaterinburg 620083, Russia
来源：
JOURNAL OF ANALYTICAL CHEMISTRY | 2000年 / 55卷 / 11期
基金：
俄罗斯基础研究基金会;
关键词：
Active Element; Ag2S; Methyl Ethyl Ketone; Lead Sulfide; TiS2;
D O I：
10.1007/BF02757330
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A lead-selective solid-contact electrode was prepared on the basis of the misfit compound (PbS)(1.18)TiS2 The electrode exhibits the slope of the electrode function is -(26 +/- 1) mV/pc and provides the determination of 1 x 10(-5)-5 x 10(-2) M lead in the pH range 2.75-5.0. High selectivity of the electrode for Ni2+ Co2+, Zn2+, Cu2+, Ag+, K+, Ba2+, and Sr2+ ions was demonstrated. The addition of graphite to the active phase of the membrane impaired the selectivity of the electrode. The electrode was used for the potentiometric indication of the titration end point in the determination of lead in copper alloys.
引用
收藏
页码：1051 / 1054
页数：4
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