This standard specifies in detail the determination methods of uranium content in uranium ores, including the Titrimetric method for ammonium ferrovanadate potential and the Titrimetric method for ammonium titanivanadate potential. It is suitable for arbitration analysis of granite and its types of uranium ores, verification of standard material determination and Miscellaneous analysis methods, and also for the determination and inspection of metallic uranium and uranium oxidation. Both methods can be used under different ray of light conditions, and the applicable range is 0.01% to n%. The Titrimetric method for ammonium ferrovanadate potential and the Titrimetric method for ammonium titanivanadate potential are effective under specific interfering material limits, respectively, and do not require sample pretreatment. The standard also includes detailed specimen handling and Potentiometric titration, poten-tiometry procedures.