Open AccessCOULOMETRIC TITRATION OF URANIUM IN NITRIC ACID SOLUTIONS
Author(s) -
M. O. Fulda
Publication year - 1960
Language(s) - English
Resource type - Reports
DOI - 10.2172/4130802
Subject(s) - titration , uranium , nitric acid , coulometry , chemistry , urea , nitrate , cerium , nuclear chemistry , inorganic chemistry , radiochemistry , electrochemistry , materials science , metallurgy , biochemistry , organic chemistry , electrode
A coulometric titration method was developed for the determination of uranium in HNO/sub 3/ solutions. Uranium was reduced to the (IV) state and was titrated with electrolytically generated cerium(IV). The colorimetric end point was detected automatically by a photometric technique. Interference from nitrate was eliminated by the addition of urea to the titration medium. The coefficient of variation for the analysis of uranium was 3.2% for 1-mg samples and 0.3% for 100-mg samples. With the addition of urea as much as 4.5 milliequivalents of nitric acid in a 1- to 3-ml sample was tolerated. (auth