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Convenient determination of trace lead in whole blood and other fluids

  • US 5,217,594 A
  • Filed: 01/15/1992
  • Issued: 06/08/1993
  • Est. Priority Date: 01/15/1992
  • Status: Expired due to Term
First Claim
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1. A surface-modified bioelectrode for detecting nanomolar levels of lead or mercury ion consisting essentially of a colloidal gold adsorbed enzyme deposited onto an d in contact with a conducting surface to form a coating thickness of between about 4-12 monolayer a on said conducting surface wherein inhibition of the enzyme detectably affects current generated from redox reactions catalyzed by the enzyme when the surface modified bioelectrode is suitably coupled wit a reference electrode.

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