Sodium- and chloride-selective microelectrodes optimized for corrosion studies

详细信息    查看全文

• 作者：Valentine A. Nazarov ; Maryna G. Taryba ; Elena A. Zdrachek ; Kseniya A. Andronchyk ; Vladimir V. Egorov ; Svetlana V. Lamaka
• 关键词：Micro-potentiometry ; Ion-selective microelectrode ; SIET ; Corrosion ; SVET ; Localized electrochemical technique
• 刊名：Journal of Electroanalytical Chemistry
• 出版年：1 October, 2013
• 年：2013
• 卷：706
• 期：Complete
• 页码：13-24
• 全文大小：3886 K

文摘

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^{鈭?/sup> and Na+ over corroding cut-edge samples of metallic coated steel and can be recommended for measuring the distribution of Na+ and Cl鈭?/sup> in corrosion applications.}