Influence of crystallographic properties on antimony electrode potential—I. Polycrystalline material

✍ Scribed by G. Edwall

• Publisher: Elsevier Science
• Year: 1979
• Tongue: English
• Weight: 487 KB
• Volume: 24
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(79)87039-5

✦ Synopsis

Antimony-antimony oxide electrodes have been used widely as pH indicators in situations where glass-electrodes fail or cannot be tolerated, However, the obtainable accuracy in the pH determinations is seriously hampered by the relatively poor stability and reproducibility characteristics of this electrode system. In this paper, the influence of the crystallographic properties of the antimony measuring surface on the obtainable measuring accuracy is discussed. It is shown that electrodes having only a few crystal grains exposed to the measuring solution In a plane polished electrode surface are to be preferred for stability reasons. Some possible explanations ofthe improved electrode behaviour are also given in terms of corrosion theory .