### Abstract

In order to test the suitability of newly developed wall-jet electrochemical cells FC2 for detection of electrochemically active biomarkers, electrochemical efficiency of those cells have been characterized using [Fe (CN)_{6}]^{3-}/[Fe(CN)_{6}]^{4-} redox couple as a probe. Measurements were performed in the range of Reynolds numbers from 0.067 to 21.3 for flow rates 0.1 - 32 ml/hr. Efficiency of the cells were found to be in the range of 0.06 - 5.3 %. The dependence of efficiency E on the flow rate Q follows the equation E (%) = a x Q ^{b} (a = 0.855, b = - 0.746;[Q] = ml/hr) with R = 0,999. The difference between the three cells can be characterized by SD of a and b (8.2 % and 5.2 %, respectively). The dependence of current I (nA) on the flow rate Q follows the same equation I(nA) = a · Q^{b} with a = 2294 and b = 0,255 (SD = 8.2 % and 14.7 % for a and b, respectively). FC2 cell with wall-jet hydrodynamics provides reproducible electrochemical measurements with well-defined efficiency and current flow dependence.

Original language | English |
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Pages (from-to) | 4922-4927 |

Number of pages | 6 |

Journal | International Journal of Electrochemical Science |

Volume | 10 |

Issue number | 6 |

Publication status | Published - 1 Jan 2015 |

Externally published | Yes |

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### Keywords

- Efficiency
- Electrochemical cell
- Flow analysis
- Wall-jet detector

### ASJC Scopus subject areas

- Electrochemistry

### Cite this

*International Journal of Electrochemical Science*,

*10*(6), 4922-4927.