Studies of the mechanically generated noise in static mercury drop electrodes

Sten Engblom, Johan Bobacka, Ari Ivaska, Géza Nagy, Péter Sárkány, Ernö Pungor

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Abstract

The moving parts needed for the operation of a mechanized static mercury drop electrode were found to generate additional noise which affects measurement of the polarographic current. A Fourier transformation method was employed in analysis of experimental data giving information about the frequency, amplitude and decay characteristics of the noise. The dominant noise frequency was found to depend on the drop size. Drop formation at a potential where no electrolysis takes place combined with a waiting period long enough for the mechanical vibrations to decay improved the precision of the polarographic current measurement.

Original languageEnglish
Pages (from-to)819-824
Number of pages6
JournalTalanta
Volume39
Issue number7
DOIs
Publication statusPublished - Jul 1992

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ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Engblom, S., Bobacka, J., Ivaska, A., Nagy, G., Sárkány, P., & Pungor, E. (1992). Studies of the mechanically generated noise in static mercury drop electrodes. Talanta, 39(7), 819-824. https://doi.org/10.1016/0039-9140(92)80102-J