500 , ! | : 400 }- =a) _ a} eS ay Ox am = - ’ oe § 5 300} CH a> . . Linear regression line y = 12.86% - 72,01 ps oO E _ . Oe — a © cm =s 1 200 ow . @ p> < oo Or c oO oO |. = 100 -— 0 A 0 _A~ 10 | 20 30 l | AQ | 50 Concentration in soil — pCi/g dry weight . Fig. 6. the . .. 137. . . Correlation of the Cs concentration in mature coconut concentration 239,240 Pu and 241 of Am > . concentration of L37es 60 Co. in the soil and 24]. ten times 0. . Sr on Bikini that of same leaves with site. Average concentrations in the O- to 25-cm portions of the soil profiles é 239,240, are combined with measured concentra- Am, and thirty to forty times that of 696, the PREDICTION OF PLANT UPTAKE The Island is usually twice that of 137s at tions in plants to predict the uptake (Table 4). As of various radionuclides from the mentioned previously, soil concen- soil. trations relationships from the 1975 Bikini on Fneu are about ten In general, these plant-s0il times lower than those on Bikini survey confirm the results. of previous Island for all the radionuclides surveys; considered. are often statistically insignificant. -l7- however, the relationships