Coiled Cathode Oxygen Polarograph

Details Coiled Cathode Oxygen Polarograph Coiled Cathode Oxygen Polarograph

Nov 1962

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1962natur.196..781b&link_type=abstract

Nature, Volume 196, Issue 4856, pp. 781 (1962).

Physics

Scientific paper

BLOOD oxygen tension (Po2) may be measured polarographically by shielding the cathode with a membrane1. Existing electrodes have two types of cathode, large and small. The large cathode of 1-2 mm diameter passes a current of 1-2 µamp at a Po2of 150 mm mercury. Unfortunately reduction at the cathode produces a local zone of oxygen depletion and a steady reading can only be obtained by vigorous stirring2. Stirring inevitably requires a rather large cuvette and a blood sample which is too large for repeated estimations on the infant and small experimental animal.

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