Identifying ionizable species with voltammetric duty cycles
First Claim
1. A method for identifying and/or measuring an ionizable species in a sample, the method comprising:
- applying an electric input signal to the sample, the electric input signal including a plurality of duty cycles, each duty cycle of the plurality of duty cycles including;
exciting the sample with an electrical pulse during an excitation period; and
relaxing the sample after the electrical pulse during a relaxation period;
detecting an output signal of the sample responsive to the electric input signal;
adjusting the electric input signal based on the output signal responsive to at least one duty cycle; and
identifying and/or measuring the ionizable species in the sample based on the output signal.
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Accused Products
Abstract
A sensor system including devices and methods for determining the concentration of an analyte in a sample is described. Input signals including amperometric and voltammetric duty cycles of excitations and relaxations may provide a shorter analysis time and/or improve the accuracy and/or precision of the analysis. The disclosed system may reduce analysis errors, thus improving measurement performance, by adjusting the potential and/or scan rate in response to output currents obtained from voltammetric scans. The disclosed system also may determine the concentration of more than one ionizable species in the sample by adjusting the potential and/or scan rate in response to output currents obtained from voltammetric scans. The multiple, determined concentrations may be used to determine the concentration of multiple analytes or to correct the concentration determined for an analyte, thus improving the measurement performance of the system.
39 Citations
20 Claims
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1. A method for identifying and/or measuring an ionizable species in a sample, the method comprising:
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applying an electric input signal to the sample, the electric input signal including a plurality of duty cycles, each duty cycle of the plurality of duty cycles including; exciting the sample with an electrical pulse during an excitation period; and relaxing the sample after the electrical pulse during a relaxation period; detecting an output signal of the sample responsive to the electric input signal; adjusting the electric input signal based on the output signal responsive to at least one duty cycle; and identifying and/or measuring the ionizable species in the sample based on the output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification