Argonne National Laboratory oxidation state studies

Wahlgren, M A., Alberts, J.J., Orlandini, KA. and Kucera, E.T. (1977) Study of the occurrence of multiple oxidation states of plutonium in natural water systems. Argonne National Laboratory, Chicago. Annual Report ANL 77-65 Pt III, pp. 92-94. 

An early problem with this chelate system was the oxidation of ferrous ions to the inactive ferric form. Argonne National Laboratory has been conducting an extensive study to develop additives that inhibit this oxidation (Mendelsohn et al., 1991). Further development of the additive approach is being carried out under an agreement between Argonne and Dravo Lime Co. Another approach is under development by The Dow Chemical Co. A key feature of the Dow process is the use of an electrochemical cell to reduce ferric ions to the ferrous state (Livengood, 1989). 

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