Accession Number : AD0717281

Title :   Fallout Simulant Development: Leaching of Fission Products from Nevada Fallout and Properties of Iodine-Tagged Simulant.

Descriptive Note : Final rept.,

Corporate Author : STANFORD RESEARCH INST MENLO PARK CALIF

Personal Author(s) : Lane,William B.

Report Date : JUN 1970

Pagination or Media Count : 56

Abstract : Long term leaching studies were conducted with field samples collected at SMALL BOY, JOHNIE BOY, and SEDAN. Fallout from each of these nuclear events was leached by 0.1N HCl (to represent stomach acid) and distilled water. The leaching mechanism for the removal of eight year old fission products from SMALL BOY fallout by 0.1N NH1 appears to be controlled by a sorption reaction for a few days, after which it is controlled by a diffusion process. Leaching of SMALL BOY fallout by 0.1N HC1 removed 60 percent of the activity from large particles and 30 percent from small particles. Leaching by water removed only a few percent of the activity. Generally less than 10 percent of the activity was removed from JOHNIE BOY or SEDAN fallout by either 0.1N HC1 or water. A method was developed for safe production of radioiodine tagged synthetic fallout with a wide range of soluble or available iodine. (Author)

Descriptors :   (*NUCLEAR EXPLOSIONS, FALLOUT), (*FISSION PRODUCTS, RADIATION HAZARDS), DECONTAMINATION, FOOD, RADIOACTIVE CONTAMINATION, RADIATION EFFECTS, TABLES(DATA)

Subject Categories : Radiobiology
      Radioactiv, Radioactive Wastes & Fission Prod

Distribution Statement : APPROVED FOR PUBLIC RELEASE