An understanding of the qualities of monitoring techniques is necessary for determining suitability to the characteristics of the individual monitoring site and what exactly they will measure: radon in an air cavity, in porous media or in water.
We found only one study, conducted in 1990/91, that measured radon in outdoor air near Canadian residences and reported 3 month average concentrations ranging from non-detection to as high as 118 Becquerels per cubic metre (Bq/m) [ 44].
This approach has been tried by measuring radon concentration in an experimental building situated in Milan Italyy).
When measuring radon concentrations in kitchens, it is very appropriate to conduct concurrent measurement of radon exhalation rates from the granites used in such kitchens in order to evaluate their contribution to kitchen space radon contamination.
The intent is to carry out a proxy of a population representative survey by measuring radon concentration in the homes of a random sample of the company employees.
Solid State Nuclear Track Detector SSNTDD) is one of the most widely used devices for the last few decades for measuring radon concentration in earthquake precursory studies.
Cohen tested the LNT theory by measuring radon levels in counties throughout the United States and correlating them with the lung cancer mortality in each of the counties.
The reason for this heterogeneity is found in the different study designs, different ways of measuring radon, different ranges of radon concentrations, varying information on confounding factors, but most importantly limited sample size in most of the individual studies.
Tremors had been occurring in the region since January, but Giuliani used his own system – a discredited approach based on measuring radon gas released by stressed rock – to predict a major earthquake on 29 March.
This calibration chamber can be used to perform researches and studies on radon behavior, in addition to calibrating different types of detectors (passive and active) which are used for measuring radon and its daughters.
