absorption. The results, given in Table 15, are tabulated as percent of total recovered activity in the sample, although actual chemical yield was approximately 75 percent of the total radioactivity in the samples. If the percentages of the radio- isotopes in plant and soil samples are approximately the same, then it may be assumed that the radtfoactive material is adsorbed onto the surfaces of the plants. The radiochemical analyses and the analytical procedures are described on page 81 of this report. Table 15 - RADIOCHEMICAL ANALYSES OF SOILS AND PLANTS, POST SHOT Percentage of Total Recovered Activity Fission Soil Plants Product Rigili Rojoa Runit Engebti Cerium 32.2 fTrivalent 25.0 24.5 vO 31.2 Engebdi Triumfetta Sedge 2h .6 25.7 Zireonium 20.8 24.5 25.5 19.8 13.7 24.6 24.2 Ruthenium 20.8 19.3 19.3 31.5 16.6 22.0 k.O 6.5 3.6 45 4.0 3.2 3.6 11.1 16.8 11.3 0 0 rare earths Barium Caletum- Strontium CesiumRubidium 18.5 21.2 16.0 13.5 0 7 3.0 -- 6) 12.9 0 s The radiochemical content of the soils from the four island is fairly uniform with some exceptions noted in the Engebi soil. As in the soil samples, 80 to 85 percent of the radio- activity in the land plants from Engebi was found in the highly ,- 60 -