| 摘要 |
PURPOSE:To enable measurement in high analytical preciseness, by aranging a pair of electrolysis generating electrodes and a pair of detection electrodes within a horizontal same plane under an electrolyte surface. CONSTITUTION:One electrode 20B of a pair of electrolysis generating electrodes 20 is positioned on the diameter line of a coulometric titration analysis cell 10 while the other one 20A thereof is positioned within a same horizontal plane and a pair of detection electrodes 30 are arranged on the inner peripheral wall of the cell in the side opposite to the electrode 20B so as to be positioned within a horizontal plane same to the electrodes 20. By this constitution, because an electric field 60 formed by the electrodes is generated in the other space having the electrolysis generating electrodes arranged therein partitioned by the electrode 20A among the space in the cell 10, influence is not acted on the electrodes 30 at all. Therefore, when the electodes 30 are the ones in a potential difference measuring method or a current measuring method, final point detection electrode potential or a final point detection current is not varied. |
