SPECTROPHOTOMETRIC DETERMINATION OF IRON(III) WITH 3-((2-HYDROXYPHENYL)DIAZENYL)PENTADIONE-2,4 AND DIANTIPYRYLMETHANE Journal title: Azerbaijan Chemical Journal Authors: A.Y. Abiyeva, F.V. Kuliyeva, Kh.J. Nagiyev, A.Q. Babayev, F.M. Chyragov Subject(s):