Polarographic oxygen sensor: Difference between revisions
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{{MitoPedia | {{MitoPedia | ||
|abbr=POS | |abbr=POS | ||
|description='''Polarographic oxygen sensors''' (POS) are operated with a polarization voltage between the cathode and anode, connected by an electrolyte. Cathode, anode and electrolyte are separated from the analyte by an oxygen-permeable membrane. Oxygen is reduced at the cathode such that the local oxygen concentration is maintained at zero, and diffuses along the concentration gradient from the stirred medium to the cathode, resulting in a linear calibration between oxygen partial pressure and electric current [Amp] (amperometric mode of operation). The [[OroboPOS]] is the POS applied in the [[ | |description='''Polarographic oxygen sensors''' (POS) are operated with a polarization voltage between the cathode and anode, connected by an electrolyte. Cathode, anode and electrolyte are separated from the analyte by an oxygen-permeable membrane. Oxygen is reduced at the cathode such that the local oxygen concentration is maintained at zero, and diffuses along the concentration gradient from the stirred medium to the cathode, resulting in a linear calibration between oxygen partial pressure and electric current [Amp] (amperometric mode of operation). The [[OroboPOS]] is the POS applied in the [[Oroboros O2k]]. | ||
|info=[[Gnaiger 1983 POS]] | |info=[[Gnaiger 1983 POS]] | ||
}} | }} |
Revision as of 19:18, 8 July 2017
Description
Polarographic oxygen sensors (POS) are operated with a polarization voltage between the cathode and anode, connected by an electrolyte. Cathode, anode and electrolyte are separated from the analyte by an oxygen-permeable membrane. Oxygen is reduced at the cathode such that the local oxygen concentration is maintained at zero, and diffuses along the concentration gradient from the stirred medium to the cathode, resulting in a linear calibration between oxygen partial pressure and electric current [Amp] (amperometric mode of operation). The OroboPOS is the POS applied in the Oroboros O2k.
Abbreviation: POS
Reference: Gnaiger 1983 POS
MitoPedia methods: Respirometry
MitoPedia O2k and high-resolution respirometry:
O2k hardware
Contributed by Gnaiger E 2016-02-08