Preparation and Properties of Reference Electrodes Based on Silver Paste Amalgam

0363716 - ÚFCH JH 2012 RIV DE eng J - Journal Article
Josypčuk, Bohdan - Barek, J. - Yosypchuk, O.
Preparation and Properties of Reference Electrodes Based on Silver Paste Amalgam.
Electroanalysis. Roč. 23, č. 9 (2011), s. 2226-2231. ISSN 1040-0397. E-ISSN 1521-4109
R&D Projects: GA ČR GAP206/11/1638; GA AV ČR IAA400400806; GA MŠMT(CZ) LC06063
Institutional research plan: CEZ:AV0Z40400503
Keywords : electrochemistry * reference electrodes * paste amalgams
Subject RIV: CG - Electrochemistry
Impact factor: 2.872, year: 2011

The preparation and testing of saturated calomel electrodes (SCE-AgPA), mercury-mercurous sulfate (MMSE-AgPA) and mercury-mercuric oxide (MMOE-AgPA) reference electrodes based on silver paste amalgam are described. All three electrodes have shown long-term stability of their potentials (ESCE-AgPA=−0.56±0.34 mV; EMMSE-AgPA=391.5±1.4 mV; EMMOE-AgPA=−104.9±0.7  mV vs. classical SCE; test time was 14 months). All paste amalgam electrodes have potentials close to their analogues with metallic mercury. They can therefore replace each other without any recalculation. Peak potentials of anodic dissolution of cadmium measured with the SCE-AgPA and SCE are identical. The greatest resistance to polarization was registered with the SCE-AgPA and significantly lower with other tested electrodes.
Permanent Link: http://hdl.handle.net/11104/0199418