| abstract |
PROBLEM TO BE SOLVED: To provide a compact and easy operation with a small amount of a sample without using a neutralization titration method, to be able to measure a base substance concentration with high accuracy, and to further perform post-treatment after the measurement. It is an object of the present invention to provide a simple basic substance quantification apparatus. SOLUTION: The basic substance quantifying apparatus of the present invention is provided with a container 7 for containing a coexisting electrolytic solution obtained by mixing hydroquinone or a hydroquinone derivative, an organic solvent, an electrolyte, and a base-containing sample to be measured; Working electrode 9, counter electrode 8, and reference electrode unit 10 immersed in a coexisting electrolyte And sweeping the electrode potential of the working electrode 9 within a predetermined potential range, and the working electrode 9 generated by the base. And a control unit for detecting a pre-peak value of a current flowing between the counter electrode 8 and a base substance concentration calculating means for calculating a base substance concentration from the pre-peak value. |