| 摘要 |
<p>A potentiometric electrochemical analysis method, which comprises placing an aqueous sample liquid possibly containing a quantity of an analyte which is to be the subject of the test, in each of two compartments of an electrochemical analysis cell, wherein the liquid in each compartment is placed in electrochemical contact with one of two electrodes forming part of the cell, wherein the electrodes are insensitive to the analyte, and wherein the compartments are separated by an electroactive barrier which is sensitive to or selective for the analyte, said barrier not being in electrical contact with either electrode except through the medium of the sample liquid, said method further comprising changing the amount of the analyte material in one of the compartments by a predefined standard quantity, and measuring the cell potential to give a result from which a measure of the concentration of analyte in the sample can be obtained by data-processing or calculation. </p> |
