Radon. Introduction. Radon is a colorless and odorless gas produced by the decay of radium – 226 Radon after decay produces radioisotopes known as radon daughters Radon progenies (Po-218 and Po-214) are of health concern, as they tend to retain in the lungs causing cancer
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Where CPM – counts per minute
T(s) – exposure time
E – efficiency of detector
CF – calibration factor
DF – decay factor
This method is effective for measuring concentrations above 4pCi/L as directed by EPA