Clark electrode

A schematic representation of Clark's 1962 invention, the Oxygen Electrode

The Clark electrode[1][2] is an electrode that measures ambient oxygen partial pressure in a liquid using a catalytic platinum surface according to the net reaction:[3]

O2 + 4 e− + 4 H+ → 2 H2O

It improves on a bare platinum electrode by use of a membrane to reduce fouling and metal plating onto the platinum.[4]

  1. ^ Clark Jr, LC; Wolf, R; Granger, D; Taylor, Z (1953). "Continuous recording of blood oxygen tensions by polarography". Journal of Applied Physiology. 6 (3): 189–93. doi:10.1152/jappl.1953.6.3.189. PMID 13096460.
  2. ^ Severinghaus, JW; Astrup, PB (1986). "History of blood gas analysis. IV. Leland Clark's oxygen electrode". Journal of Clinical Monitoring. 2 (2): 125–39. doi:10.1007/BF01637680. PMID 3519875.
  3. ^ Wang, Joseph (2007). "Electrochemical Glucose Biosensors". Chemical Reviews. 108 (2): 814–825. doi:10.1021/cr068123a. PMID 18154363.
  4. ^ KANWISHER, JOHN (1959). "Polarographic oxygen electrode" (PDF). Limnology and Oceanography. 4 (2): 210–217. Bibcode:1959LimOc...4..210K. doi:10.4319/lo.1959.4.2.0210. Archived from the original (PDF) on 2014-07-14. Retrieved 2014-07-09.