Amperometric sensor
First Claim
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1. An amperometric sensor suitable for determining the concentration of hydrogen peroxide in a sample, said sensor comprising a ferricyanide compound which, in reduced form, functions as a mediator selective for hydrogen peroxide, wherein the ferricyanide compound is of general formula:
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X3Fe(CN)6 wherein each X is a phosphonium ion of formula (R5)(R6)(R7)(R8)P+ in which R5 to R8 are the same or different alkyl groups containing from 1 to 20 carbon atoms, provided that at least one group R5 to R8 contains at least 4 carbon atoms.
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Abstract
An amperometric sensor suitable for determining the concentration of hydrogen peroxide in a sample, said sensor comprising a ferricyanide compound which, in reduced form, functions as a mediator specific to hydrogen peroxide.
199 Citations
25 Claims
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1. An amperometric sensor suitable for determining the concentration of hydrogen peroxide in a sample, said sensor comprising a ferricyanide compound which, in reduced form, functions as a mediator selective for hydrogen peroxide, wherein the ferricyanide compound is of general formula:
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X3Fe(CN)6wherein each X is a phosphonium ion of formula (R5)(R6)(R7)(R8)P+ in which R5 to R8 are the same or different alkyl groups containing from 1 to 20 carbon atoms, provided that at least one group R5 to R8 contains at least 4 carbon atoms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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- 12. An amperometric sensor suitable for determining the concentration of hydrogen peroxide in a sample, said sensor comprising a ferricyanide compound bound to a polymer, which ferricyanide, in reduced form, functions as a mediator selective for hydrogen peroxide, wherein the ferricyanide compound is a ferricyanide compound having a solubility of from 2000 mg/L to 20,000 mg/L in pure water.
Specification