A simple hanging mercury drop electrode
Peer reviewed, Journal article
Published version
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Date
2000Metadata
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Original version
Journal of Chemical Education. 2000, 77 (1), 98-100.Abstract
A device producing reproducible hanging mercury drops at the end of a glass capillary is described. Mercury flow through th capillary is controlled by means of a closing needle actuated by an electromagnetic relay. The timing circuit is very simple and consists only of resistors and capacitors. This simple electrode could find various applicati ns in the teaching laboratory for illustrating the principles of general electrochemistry, stripping voltammetry, and complex equilibria in solutions.