Method, composition and sensor for testing a sample for the presence of nitrate or nitrite
AssigneesCambridge Disaplay Technology Limited, Sumitomo Chemical Company, Limited
InventorJonathan Behrendt
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Abstract
A method of testing a sample for the presence of nitrate or nitrite, the method comprising the steps of: forming a mixture by contacting the sample with a composition comprising hydrogen peroxide or a hydrogen peroxide precursor and a fluorescent indicator precursor capable of forming a fluorescent indicator in the presence of peroxynitrite; irradiating the mixture; and measuring fluorescence from the fluorescent indicator. The method may be carried out using a device in which the mixture in a channel or chamber 101 of a microfluidic device is irradiated by light from light source 103 and emission from the fluorescent indicator is detected by photodetector 105.
Claims21
A method of testing a sample for the presence of nitrate or nitrite, the method comprising the steps of:
- forming a mixture by contacting the sample with a composition comprising hydrogen peroxide or a hydrogen peroxide precursor and a fluorescent indicator precursor capable of forming a fluorescent indicator in the presence of peroxynitrite;
- irradiating the mixture;
- and
- measuring fluorescence from the fluorescent indicator.
21-27. (canceled)
Dependencies are inferred from the claim text.