Immobilized enzyme electrodes
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United States of America Patent
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Jul 27, 1993
Grant Date -
N/A
app pub date -
Jul 5, 1989
filing date -
Oct 19, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Enzyme electrodes are described which are of reduced sensitivity to alcohol. The electrodes comprise a porous resin-bonded layer of powdered carbon or graphite, onto which the enzyme is immobilized, that layer containing either finely divided platinum oxide, or finely divided platinum the surface of which is provided with a thin oxide film, e.g. by an anodisation process, the finely divided platinum oxide or anodised platinum being uniformly dispersed throughout the resin-bonded carbon or graphite layer and preferably preadsorbed onto the surface of the powdered carbon or graphite prior to bonding. Also disclosed is a method of making such electrodes by a polarization treatment of a preassembled platinized electrode.
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