Sodium- and chloride-selective microelectrodes optimized for corrosion studies

•Sodium and chloride membrane cocktails for corrosion studies were developed.•The response of the microelectrodes to pH is the main issue of sensor’s development.•The concentration of Cl− and Na+ over corroding samples were measured. New sodium and chloride ion-selective membrane cocktails for glass...

Full description

Saved in:
Bibliographic Details
Published in:Journal of electroanalytical chemistry (Lausanne, Switzerland) Switzerland), 2013-10, Vol.706, p.13-24
Main Authors: Nazarov, Valentine A., Taryba, Maryna G., Zdrachek, Elena A., Andronchyk, Kseniya A., Egorov, Vladimir V., Lamaka, Svetlana V.
Format: Article
Language:English
Subjects:
Corrosion
Ion-selective microelectrode
Localized electrochemical technique
Micro-potentiometry
potassium
SIET
sodium
sodium chloride
steel
SVET
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Sodium and chloride membrane cocktails for corrosion studies were developed.•The response of the microelectrodes to pH is the main issue of sensor’s development.•The concentration of Cl− and Na+ over corroding samples were measured. New sodium and chloride ion-selective membrane cocktails for glass-capillary microelectrodes were developed satisfying the demands for corrosion studies. Membrane cocktails were optimized to provide a wide pH working range, good long-term stability and reproducibility of potential. The proposed sodium-selective cocktail contains sodium ionophore VI, potassium tetrakis(4-chlorophenyl) borate and 2-nitrophenyl octyl ether. The chloride-selective cocktail consists of tridodecylmethylammonium chloride and 2-nitrophenyl octyl ether. The proposed microelectrodes were successfully applied to measure the concentration of Cl− and Na+ over corroding cut-edge samples of metallic coated steel and can be recommended for measuring the distribution of Na+ and Cl− in corrosion applications.
ISSN:1572-6657
1873-2569
DOI:10.1016/j.jelechem.2013.07.034