[en] Phosphoric acid is the most important precursor for uranium production in Syria. Uranium extraction from phosphoric acid depends on the chemical composition of the acid, and most important is the relation between the proportions of iron_II/iron_III, and uranium_IV/uranium_VI, this proportion plays a very important role in different steps of the extraction. For this purposes two methods for determination of Iron_II and Iron_III in Syrian wet phosphoric acid spectrophotometrically were studied. The first one used 1.10 phenanthroline as complex agent. Iron_II formed red complex with 1.10 phenonstholine in the range of pH between 4 and 6, for determination of total iron. Iron_III was reduced to Iron_II with hydroxylamine hydrochloride. The second method used sulfosalycilic acid, Iron_III formed a yellow complex with sulfosalycilic acid. Total iron was determined in ammonium medium, but Iron_III was determined in pH=1.5. The sensibility of the tow methods and stability of their complex have been studied in normal laboratory conditions. 45 refs., 4 figs. (author)