aT TCIR - 627 ned ed od. the ther - THE PROPER ROLE OF DETERGENTS IN RELATION TO RADIOLOGICAL DECONTAMINATION. Harry Levin, 5 February 1951. CONFIDENTIAL ~ This report discusses the nature of six chemical compounds cited as being effective decontaminating agents. The mechanics of their decontaminating properties are investigated to determine whether the effectiveness is attributable to base-exchange combinations, adsorption, chelate reactions, polar attraction, detergency, or other characteristic of the agent. that: It was determined, with respect to the six decontaminants, 1. Removal of fission products is probably due to the decontaminants' affinity for colloidal soils on which the fission products have lodged. 2. Decontaminating efficiency may be due to scavenger action rather than selective attack on certain chemical species. peras. id 3. Because of adsorption and masking, the mass-action laws for combination of decontaminants and fission products in aqueous solution cannot predict effective limits of decontamination. 4. Certain of the decontaminants may be effective in certain instances and ineffective in others, even with the same species of contaminant. 5. It is impractical to attempt, by sensitive reactions, to identify fission products as they are deposited after an atomic-bomb burst. APAG {2 t