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An electrochemical quartz crystal microbalance study of the deposition of mercury on graphite films

โœ Scribed by C.Donald Evans; Igor Nicic; James Q. Chambers


Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
493 KB
Volume
40
Category
Article
ISSN
0013-4686

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โœฆ Synopsis


Mercury deposition onto microcrystalline

graphite and glassy carbon electrodes from aqueous chloride media was studied by Electrochemical Quartz Crystal Microgravimetry (EQCM) and voltammetric techniques. After deposition of Hg(0) under controlled potential conditions, mercury continued to deposit at open circuit as a calomel film by the reaction, Hg + Hg(II) + 2C1-& Hg2C12,.q,. The implications for the preparation of mercury film electrodes and for anodic stripping voltammetry are discussed.


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The properties of poly-2,5-pyridine films, deposited on gold electrodes through a nickel-catalyzed cathodic polymerization route carried out in acetonitrile, were re-investigated by electrochemical quartz crystal microgravimetry in conjunction with cyclic voltammetry and coulometry. Special attentio