### 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 |
---|---|

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 |

### Fingerprint

### 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.

**Testing of electrochemical efficiency of wall-jet cell FC2 as a tool for detection of electrochemically oxidisable biomarkers.** / Krejčí, Jan; Ventrubová, Iva; Ježová, Lucie; Fischer, Jan; Barek, Jiří.

Research output: Contribution to journal › Article

*International Journal of Electrochemical Science*, vol. 10, no. 6, pp. 4922-4927.

}

TY - JOUR

T1 - Testing of electrochemical efficiency of wall-jet cell FC2 as a tool for detection of electrochemically oxidisable biomarkers

AU - Krejčí, Jan

AU - Ventrubová, Iva

AU - Ježová, Lucie

AU - Fischer, Jan

AU - Barek, Jiří

PY - 2015/1/1

Y1 - 2015/1/1

N2 - 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 · Qb 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.

AB - 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 · Qb 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.

KW - Efficiency

KW - Electrochemical cell

KW - Flow analysis

KW - Wall-jet detector

UR - http://www.scopus.com/inward/record.url?scp=84930174601&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84930174601&partnerID=8YFLogxK

M3 - Article

VL - 10

SP - 4922

EP - 4927

JO - International Journal of Electrochemical Science

JF - International Journal of Electrochemical Science

SN - 1452-3981

IS - 6

ER -