SPECTROPHOTOMETRIC DETERMINATION OF URANIUM WITH THIOCYANATE

摘要

However, ore samples and leach liquors could not be analyzed by this method without a preliminary separation of interfering cations, especially iron and vanadium. Therefore a new method was developed which consists of a preliminary ethyl acetate extraction of the uranium followed by development of the color on a portion of the extract. The separation was found to be quantitative in one extraction under the proper conditions and efficient for all known interferences except titanium. Solutions containing up to 5 gramsnTi/L could be analyzed by first precipitating the titanium la the extraction real with phydroxyphenylarsonic acid.