Quantitative analyzing method and quantitative analyzer using sensor
First Claim
1. A quantitative analyzing method for electrochemically measuring concentration of a substance in a sample liquid using a sensor including a reagent layer which contains a reagent for reacting with the substance and to which the sample'"'"' liquid is introduced, and a first and a second electrodes for applying a voltage to the reagent layer, the method comprising:
- a current measuring step for applying a voltage across the first electrode and the second electrode for measuring current flowing between the first electrode and the second electrode;
a parameter calculating step for calculating a parameter based on the measured current; and
a determining step for determining whether or not the sample liquid introduced to the reagent layer is insufficient in amount based on the parameter and at least one predetermined constant.
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Accused Products
Abstract
A quantitative analyzing method is provided for electrochemically measuring the concentration of a substance in a sample liquid using a sensor including a reagent layer (30) which contains a reagent for reacting with the substance and to which (30) the sample liquid is introduced, and a first electrode (22) and a second electrode (23) for applying a voltage to the reagent layer (30). The method includes a current measuring step for applying a voltage across the first electrode (22) and the second electrode (23) for measuring current flowing between the first and the second electrodes (22,23), a parameter calculating step for calculating a parameter based on the measured current, and a determining step for determining a state of the sample liquid introduced to the reagent layer (30) based on the parameter and at least one predetermined constant.
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Citations
20 Claims
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1. A quantitative analyzing method for electrochemically measuring concentration of a substance in a sample liquid using a sensor including a reagent layer which contains a reagent for reacting with the substance and to which the sample'"'"' liquid is introduced, and a first and a second electrodes for applying a voltage to the reagent layer, the method comprising:
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a current measuring step for applying a voltage across the first electrode and the second electrode for measuring current flowing between the first electrode and the second electrode; a parameter calculating step for calculating a parameter based on the measured current; and a determining step for determining whether or not the sample liquid introduced to the reagent layer is insufficient in amount based on the parameter and at least one predetermined constant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A quantitative analyzer for electrochemically measuring concentration of a substance in a sample liquid using a sensor including a reagent layer which contains a reagent for reacting with the substance and to which the sample liquid is introduced, and a first and a second electrodes for applying a voltage to the reagent layer, comprising;
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voltage applying means for applying a voltage across the first electrode and the second electrode; current measuring means for measuring current flowing between the first electrode and the second electrode; calculating means for calculating a parameter based on the measurement obtained by the current measuring means; and determining means for determining whether or not the sample liquid introduced to the reagent layer is insufficient in amount based on the parameter calculated by the calculating means and at least one predetermined constant. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A quantitative analyzing method for electrochemically measuring concentration of a substance in a sample liquid using a sensor including a reagent layer which contains a reagent for reacting with the substance and to which the sample liquid is introduced, and a first and a second electrodes for applying a voltage to the reagent layer, the method comprising:
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a first current measuring step for applying a voltage across the first electrode and the second electrode for a first period for measuring current flowing between the first electrode and the second electrode; a sample liquid introducing step for introducing the sample liquid to the reagent layer within the first period; a first parameter calculating step for calculating a parameter based on the current measured in the first current measuring step; a first determining step for determining whether or not the sample liquid introduced to the reagent layer is insufficient in amount based on the parameter obtained in the first parameter calculating step and at least one first constant determined in advance; a reaction promoting step for substantially intermitting voltage application across the first electrode and the second electrode for a second period; a second current measuring step for applying a voltage across the first electrode and the second electrode for a third period for measuring current flowing between the first electrode and the second electrode; a second parameter calculating step for calculating a parameter based on the current measured in the second current measuring step; and a second determining step for determining whether or not the sample liquid introduced to the reagent layer is insufficient in amount based on the parameter obtained in the second parameter calculating step and at least one second constant determined in advance. - View Dependent Claims (20)
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Specification