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Ferricyanide-Sensing Electrodes

  • Ihn, Gwon-Shik (Department of Chemistry, College of Natural Science, Keimyung University)
  • 발행 : 1986.02.20

초록

The Ferricyanide-sensing electrodes were prepared with $Ag_2S\;and\;Ag_3Fe(CN)_6$ (mole ratio 3:1-7:1). The 5:1 $(Ag_2S:Ag_3Fe(CN)_6)$ composition is superior to others in terms of potentiometric response, rapidity of response and reproducibility. Testing was done over the concentration range $10^{-1}M{\sim}10^{-6}M\; Fe(CN)_6^{3-}$ at pH 6.8 with constant ionic strength. The concentration-potential curve was linear and coincided with the Nernstian slope (19.7 mV/decade). Interfering ions were $I^-,\;Br^-,\; SCN^-\;and\;Fe(CN)_6^{4-}$ and the life time of this electrode was 3 weeks. This electrode could be used as the indicator electrode for measuring the ferricyanide and ferrocyanide.

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피인용 문헌

  1. Auto-Release of Fe(CN)6 4- from Conductive Polymer at a Sensing System vol.192, pp.7, 2005, https://doi.org/10.1080/009864490510815