高锰酸根离子选择性电极的构建及其在电位滴定中的应用。

Construction of a permanganate ion-selective electrode and its application to potentiometric titrations.

作者信息

Kataoka M, Unjyo N, Kambara T

机构信息

Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060, Japan.

出版信息

Talanta. 1983 Oct;30(10):741-4. doi: 10.1016/0039-9140(83)80170-2.

DOI:10.1016/0039-9140(83)80170-2

PMID:18963457

Abstract

The construction of a liquid-membrane type permanganate ion-selective electrode and its application to potentiometric titrations are described. The benzylcetyldimethylammonium-permanganate ion-pair in the aqueous phase is easily extracted into nitrobenzene and the extract is employed as the liquid ion-exchange membrane of the ion-selective electrode. The electrode gives Nernstian response to permanganate in the concentration range from 10(-6) to 10(-1)M, and the potential is almost independent of pH over the range from 3.0 to 10.5. The electrode can be used as indicator electrode in potentiometric titrations with permanganate.

摘要

本文描述了液膜型高锰酸根离子选择性电极的构建及其在电位滴定中的应用。水相中的苄基十六烷基二甲基铵 - 高锰酸根离子对很容易被萃取到硝基苯中，该萃取物用作离子选择性电极的液膜。该电极在10⁻⁶至10⁻¹M的浓度范围内对高锰酸根给出能斯特响应，并且在3.0至10.5的pH范围内电位几乎与pH无关。该电极可用作高锰酸根电位滴定的指示电极。