Electrode for the electrochemical detection of nitric oxide
First Claim
1. An electrode having a surface region comprised of a metal oxide capable of enhanced detection of nitric oxide when exposed to a nitric oxide-containing fluid.
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Abstract
Nitric oxide-specific electrodes are useful for in situ detection of nitric oxide in biomedical applications and have at least a surface region thereof which is capable of forming complexes with nitric oxide, for example, nitrosyl complexes. The nitric oxide complexes formed at the surface of the electrodes apparently increase the concentration of nitric oxide available for detection, thereby leading to significantly improved relative responses as compared to other known nitric oxide electrode materials. Most preferably, the electrode has at least an exterior surface region which contains ruthenium and/or at least one oxide of ruthenium. The electrodes are advantageously conditioned in saline solution at +675 mV for about two hours.
91 Citations
17 Claims
- 1. An electrode having a surface region comprised of a metal oxide capable of enhanced detection of nitric oxide when exposed to a nitric oxide-containing fluid.
- 6. A nitric-oxide specific electrode having a surface region conditioned at a potential which enhances nitric oxide detection when the electrode is exposed to a nitric oxide-containing fluid.
- 15. A method of making an electrode for the detection of nitric oxide which comprises conditioning a metal electrode surface at a potential for a time sufficient for the surface to exhibit enhanced nitric oxide response.
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