Methods and Measurements of Indoor Levels of Radon and Its Daughter Products

摘要

General population is exposed, some times, to enhanced levels of radon (Rn) and its progeny concentrations in the indoor environment of dwellings, depending on various parameters like type of construction, location and ventilation features of the dwelling as well as on the occupancy factor. The risk involved in the indoor Rn exposure is briefly discussed in this report. Several methods are available for the measurement of Rn and its daughters in dwellings. This report describes in detail some of the suitable and convenient methods for the measurements. Methods for evaluating ventilation rate in dwellings is also given. Grab sampling and time integrated measurements are described. The report also gives the results of some preliminary measurements carried out in some rooms and lecture halls of the Bhabha Atomic Research Center, Bombay. The results are discussed and conclusions drawn with particular reference to a country-wide survey of Rn exposure. (Atomindex citation 19:088538)