The relative interconversion factors which are derived from the experimentally determined radioactivity concentrations are as follows: U.S. Public Health Service Radiation Surveillance Network, 1.00;Canadian Radiation Protection Division Network, 1.28;U.S. A.E.C. Health and Safety Laboratory 80th Meridian Network, 1.29;Mexican Radiation Protection Program Network, 1.58;and U.S. Public Health Service National Air Sampling Network, 1.77. The variable associated with the volume of air sampled has been eliminated in this study;the above factors relate solely to the evaluation of the combined effect of filter performance and counting techniques employed by the various networks.
展开▼
