412 TRANSURANIC ELEMENTS IN THE ENVIRONMENT 



100 — 



10 — 



c 

 o 



0) 



> 



3 



a. 



CJ 



a 



0.1 



0.01 



0.001 



0.01 



0.1 



1 10 



pCI Pu/g soil (0 to 15 cm) 



100 



1000 



Fig. 2 Relationship of average plutonium concentration in herbaceous vegetation 

 (grasses and forbs combined) and in corresponding soils in Los Alamos and Trinity Site 

 study areas. 



TABLE 6 Plutonium Concentration Ratios for Vegetation and Associated Soils 

 from Los Alamos and Trinity Study Sites 



*Ratio calculated as [pCi Pu/g (dry weight) plant] /[pCi/g (dry weight) soil (0 to 15 cm depth)]. 

 Parenthetic value is coefficient of variation (CV = standard deviation/mean). 



