The effect of borate buffer on ortho quinone electrochemistry

✍ Scribed by S.I. Bailey; I.M. Ritchie

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 583 KB
• Volume: 32
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(87)90028-4

✦ Synopsis

Although boric acid is known to complex with various polyalcohols, it is often used as a component of buffer mixtures. Electrochemical and spectrophotometric experiments have shown that borate buffers exhibit two types of interference with ortho quinone redox systems. Ortho quinones themselves exist in equilibrium with electroinactive complexes in borate solutions. The corresponding hydroquinones formed by reduction of the quinones complex even more strongly giving complexes which may be oxidized back to the quinone, but at a much higher potential than for the hydroquinone.