Location of end-points in high-precision coulometry.

摘要: A computer has been used to fit a cubic equation experimental data obtained in the region of end-point high-precision coulometric titrations 4-aminopyridine and tris(hydroxy-methyl) aminomethane. For these weak bases, two end-points (points inflexion calculated by setting second derivative equal zero) choosing first time, secondly pH, as independent variable, are good agreement.