Potentiometric micro determination of the sulphate ion

Abstract

In the measurement of fast neutrons, the amount of sulphur dispersed in the special films used is important. To determine their sulphur content a potentiometric titration has been studied in which sulphate ions, obtained by oxidation, are titrated with standard lead nitrate solution. The standard deviation in the titration value for 10-µg amounts of sulphur is lower than 1 per cent. As constant potential is rapidly attained after each addition of titrating solution, an automatic titration is carried out.