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. 2020 Jan 24;99(3):1606–1614. doi: 10.1016/j.psj.2019.12.007

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© 2020 The Authors

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

PMC Copyright notice

(A) Comparison of 3 electrodes (interdigitated microelectrode [IME], screen-printed electrode [SPE], printed circuit board electrode [PCBE]) for impedance measurement of the catalysate with the concentrations from 10 to 100 μM. The SPE and the PCBE have higher sensitivity and much lower cost than the IME. However, the PCBE has a higher noise level and a poorer stability. The SPE is considered as the most suitable electrode after trading off the sensitivity, the stability, and the cost. (B) Comparison of the impedance analyzer with the LCR meter for impedance measurement of the simulated catalysate with the concentrations from 10 to 100 μM and real poultry samples at the same characteristic frequency of 10 kHz. The impedance values measured by the impedance analyzer and the LCR meter are very close. The impedance analyzer is suitable for impedance measurement.