title: Valence stabilization of polyvalent ions during gamma irradiation of their aqueous solutions by sacrificial protection. III-Valence stabilization of Fe(II) ions by organic additives.
abstract: Valence stabilization of polyvalent ions in gamma irradiated aqueous solutions is sometimes necessary in some chemical operations. In previous publications, valence stabilization of some polyvalent ions in solution upon gamma irradiation was achieved by using inorganic additives capable of interacting with the oxidizing or reducing species formed during water radiolysis. The results showed that the nature and duration of valence stabilization of Fe(II) depend on the concentration of the inorganic additives used. In the present work, a series of some organic additives has been used to investigate their capability in inducing valence stabilization of polyvalent iron ions, taken as an indicator, in aqueous acidic solutions when subjected to extended gamma irradiation. The results showed that the efficiency of valence stabilization depends on the amount and chemical structure of the organic additive used.
authors.affiliation: Nuclear and Radiological Control Authority, 3, Ahmed El-Zomor Str., Nasr City, P. O. Box 7551, Cairo, 11787 Egypt.
authors.forename: M F
authors.initials: MF
authors.lastname: Barakat
authors.affiliation: Hot Lab. Center, Atomic Energy Authority, Cairo, Egypt.
authors.forename: M M
authors.initials: MM
authors.lastname: Abdel Hamid
keywords: Competitive reactions; Extended irradiation; Protective effects; Radiolysis; Valence stabilization; Water radiolysis