MULTIPLE POTENTIAL BASED CHRONOAMPEROMETRIC FREE CHLORINE SENSORS
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United States of America Patent
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Issued Date -
Oct 2, 2014
app pub date -
Nov 8, 2012
filing date -
Nov 11, 2011
priority date (Note) -
Abandoned
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Abstract
A chronoamperometric method and device to determine concentration of an electrochemically active species in a fluid and pH of the fluid. A plurality of sets of calibration relationships may be determined for a sensor in an aqueous solution, the sensor having one or more working electrodes and one or more reference electrodes. A first plurality of potentials may be applied across the working and reference electrodes of the sensor in solution, and a first plurality of currents and current differences obtained as a function of the applied first plurality of potentials. Concentration of an electrochemically active species may then be determined as a function of the obtained first plurality of currents and current differences using the plural sets of calibration relationships, and pH of the solution may be determined as a function of the obtained first plurality of currents and current differences using the plural sets of calibration relationships.
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