Amperometric titration of boron with fructose

Aqueous solutions of boratei can be titrated amperometrically with standard fi uctose solutions This procedure may be used to determine the boron content of various types of samples after conversion of the boron to the borate form The methode is based upon the observation that the polarographic wave of fructose. in a o I M LiCl, 001 N'LiOH solution is deprcssed by the presence of borate ions Under the prescribed conditions the methode is sensitive to a few hundredths of a milligram of boron The few comnonly occurring intcrferenes can be conveniently removed prior to the titration