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I-131 Air Sampling




     RadSafe,
     
     I am with the Rad. Safety Div. in the Occ. & Env. Safety Office at 
     Duke Univ.  I am working on a radioiodine (I-131) project looking at 
     the therapeutic use of I-131 in the hospitals.  One of the aspects of 
     the project will be air sampling in patient rooms after the patient 
     has been dosed.
     
     At this point in time I am considering going with a low vol. sampler 
     (around 2 lpm) using activated charcoal tubes in conjunction with HEPA 
     filters.  Does this sound like a good idea (or not)?  
     
     I would graciously welcome information/advice anyone might have 
     regarding this type of air sampling (i.e. equipment use, flow rates, 
     sample times, and any other suggestions)
     
     My e-mail address is brind002@mc.duke.edu
     
     Thanks,
     
     Jim Brindle