Radon concentration in compressed natural gas and liquefied petroleum gas and its release range in residential houses

Radon (${}^{222}$Rn) exposure in the environment is an important issue, and many pathways exist for radon exposure to humans. One of these pathways is ${}^{222}$Rn release through the consumption of natural gas. The issues of ${}^{222}$Rn concentration measurement techniques and worldwide concentration distribution were reviewed in natural gas, with emphasis on performing an active method to determine ${}^{222}$Rn concentration in LPG and CNG gases used in Cyprus. The obtained results were compared with ${}^{222}$Rn concentration in natural gas worldwide and UNSCEAR reports. The average ${}^{222}$Rn concentration value in LPG gas was observed higher than CNG gas. Also, the ${}^{222}$Rn concentration in LPG and CNG gases was less than the UNSCEAR reported value.