134 TRANSURANIC ELEMENTS IN THE ENVIRONMENT 



20 30 40 50 60 70 80 90 95 

 PARTICLES HAVING >T TRACKS, 



98 99 



99.8 



Fig. 9 Distribution of the number of tracks per particle for particles collected from the 

 mechanical line (sampling point A), wet cabinets, and room air. 



TABLE 1 1 Distribution of Fission-Fragment Tracks Among Plutonium-Bearing 

 Particles from Various Sources in Systems I and II 



air' 



98 



0.87 



4.14 



-0.29 



System II 



Sampling point A air 

 Samphng point B air 

 Sampling point C air 

 Sampling point D air 



0.02 



*Values determined graphically. 



