| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oxidation-reduction current measuring device, capable of efficient electric cleaning and stable oxidation-reduction current (electrolytic current) measurement in a polarographic system or in a galvanic cell system, regardless of foreign matters or the like in a sample liquid. <P>SOLUTION: A measuring voltage is applied between a detection electrode 1 in contact with the sample liquid S and a measuring counter electrode 2 at the measuring time, and a flowing measuring current is measured. A cleaning voltage is applied between the detection electrode 1 and a cleaning counter electrode 3 at the cleaning time. A cleaning current in the reverse direction to the measuring current is made to flow relative to the detection electrode 1 by the cleaning voltage. The electrical quantity of the cleaning current is controlled, corresponding to the electrical quantity of the measuring current. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
