Variation of Radon with Relative and Absolute Humidity- I

Radon gas a decay product of Uranium-238 is direct descendent of 226Ra. It is affected by Temperature, pressure and humidity. The temperature variation of Effective Equivalent concentration of radon is well established and so also is relative humidity variation. The former having negative slope and later positive. However absolute humidity variation of EECRn is disputed by Blaauboer and Smetsers and Singh et. al. This has been resolved in this work using 3D MAT lab relations between RH, AH and Temperature. All the measured values of EECRn yield negative slope with AH supporting results of Singh et. al.