Electrochemical Sensor
First Claim
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1. An electrochemical sensing method comprising:
- applying a time-varying potential between working and reference electrodes in electrical contact with a target solution, said time varying potential having a ramp-up period, during which the potential difference increases from a first predetermined potential to a second predetermined potential, followed by a plateau period during which said potential difference is maintained substantially constant at said second predetermined potential; and
sampling the current flowing between said working and counter electrodes for measurement purposes, only during said plateau period.
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Abstract
In an electrochemical sensor, the potential difference applied to the electrochemical cell is raised to a measuring value at a rate determined to reduce the transient current.
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Citations
23 Claims
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1. An electrochemical sensing method comprising:
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applying a time-varying potential between working and reference electrodes in electrical contact with a target solution, said time varying potential having a ramp-up period, during which the potential difference increases from a first predetermined potential to a second predetermined potential, followed by a plateau period during which said potential difference is maintained substantially constant at said second predetermined potential; and
sampling the current flowing between said working and counter electrodes for measurement purposes, only during said plateau period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An electrochemical sensor device comprising:
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a potentiostat for applying a potential between working and counter electrodes in electrical contact with a target solution and sampling the current flowing between the electrodes;
a controller for controlling the potentiostat so that it applies a time varying potential having a ramp-up period, during which the potential difference increases from a first predetermined potential to a second predetermined potential, followed by a plateau period during which said potential difference is maintained substantially constant at said second predetermined potential and samples the current flowing between said working and counter electrodes for measurement purposes, only during said plateau period. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification