Environmental Sr-90 in Urine

[eh_carbaugh@ccmail.pnl.gov (Eugene H Carbaugh)]

     Has anyone looked at Sr-90 levels in urine that might be attributable 
     to worldwide fallout or other such environmental sources?  My cursory 
     review of NCRP, ICRP and recent HP issues did not identify any such 
     levels.  
     
     We have noticed a nominal 0.3 dpm (5 mBq) bias in our blank urine  
     (real urine from unexposed people), compared to our lab which is 
     reporting a reagent blank value (artifical urine) about an order of 
     magnitude lower.
     
     
     Thanks,
     
     Gene Carbaugh
     Pacific Northwest National Laboratory
     eh_carbaugh@pnl.gov