20 40 60 80 l 100 120 INCUBATION TIME (days) Fig. 4, Solubility of plutonium with time after addition to scil as the nitrate and the DIPA complex (Wildune and Garland, 1975). 136 80 40 60 (hours) TIME OF CONTACT Fis. 5. 0 4960 |- 0.03 Quantity of soluble plutonium removed from three soils by 0.01 M CaCl2 (Garland et aZ., 1976). 0.1 HESSON MUSCATINE 1.0 20 0*PLUTONIUM-NITRATE (144 g/g) eee mw 8DUTONIUM-NITRATE (0.6 gia) —_ C RITZVILLE o 8p.UTONIUM-DIPA (0.6 Ug/q) ———_— — em — a ae ar F = a °PLUTONTUM-DIPA (1 ugia) 6200 FRACTION SOLUBLE (%) o 2 © 239 *’PLUTONIUM-DTPA (144 gig) MUSCATINE L @ -@ 001M —_ CaCl! e SOIL: SOLUTION = 1:100 F O—O DISTILLED WATER 100 ; 137