Studies of aerosol distributions in a small laboratory containing a heated phantom

In order to provide information to assist in the design and planning of workplace air-sampling facilities, we have studied the variations in time and space of aerosol concentrations in a small room containing a glove-box and a heated phantom. Aerosol concentrations are reduced by factors of 10(2)-10(3) between the source and the phantom and walls of the room. Time-series plots of concentration show large departures from mean concentrations and fluctuations measured at the mouth and chest of the phantom are frequently uncorrelated. Both the average concentration around the phantom and the fluctuations in concentration tend to increase when the phantom is heated.