Radon indoor concentration time-variation model

Abstract

AbstractThe $$\mathrm{time}$$ time $$\mathrm{variation}$$ variation of $$\mathrm{radon}$$ radon $$\mathrm{indoor}$$ indoor $$\mathrm{concentration}$$ concentration is studied using a $$\mathrm{semi}$$ semi $$\mathrm{empirical}$$ empirical $$\mathrm{model}$$ model . The $$\mathrm{mass}$$ mass $$\mathrm{balance}$$ balance formula for $$\mathrm{radon}$$ radon $$\mathrm{indoors}$$ indoors is applied to put a descriptive equation that considers every $$\mathrm{source}$$ source of the $$\mathrm{radon}$$ radon . The $$\mathrm{resultant}$$ resultant equation is solved analytically with imposing a number of approximate forms that are justified by their $$\mathrm{empirical}$$ empirical background. The $$\mathrm{model}$$ model ’s $$\mathrm{parameters}$$ parameters are fitted to some $$\mathrm{experimental}$$ experimental $$\mathrm{radon}$$ radon $$\mathrm{indoor}$$ indoor $$\mathrm{concentration}$$ concentration data to estimate a set of descriptive figures for $$\mathrm{radon}$$ radon entry to $$\mathrm{indoors}$$ indoors from the $$\mathrm{wall}$$ wall s and $$\mathrm{ground}$$ ground of a $$\mathrm{room}$$ room . The current study focuses on applying the $$\mathrm{model}$$ model on a short period of $$\mathrm{time}$$ time . The $$\mathrm{model}$$ model is successful and provides a good description for the data, with further prediction of the possibility of having an unrecognized $$\mathrm{source}$$ source of $$\mathrm{radon}$$ radon .