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Radiation Protection Dosimetry Advance Access published online on November 3, 2009
Radiation Protection Dosimetry, doi:10.1093/rpd/ncp242
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© The Author 2009. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

CONCENTRATIONS OF 222Rn, 220Rn AND THEIR DECAY PRODUCTS MEASURED IN OUTDOOR AIR IN VARIOUS RURAL ZONES (MOROCCO) BY USING SOLID-STATE NUCLEAR TRACK DETECTORS AND RESULTING RADIATION DOSE TO THE RURAL POPULATIONS

M. A. Misdaq*, M. Amrane and J. Ouguidi

Nuclear Physics and Techniques Laboratory, Faculty of Sciences Semlalia, BP 2390, University Cadi Ayyad, Marrakech, Morocco (Research Unit Associated to the CNRST, Rabat, Morocco)

* Corresponding author: misdaq{at}ucam.ac.ma

Received July 21, 2009, amended September 24, 2009, accepted September 28, 2009

Alpha and beta activities per unit volume of air due to radon (222Rn), thoron (220Rn) and their progenies were measured in the outdoor air at different locations in Morocco by using both CR-39 and LR-115 type II solid-state nuclear track detectors (SSNTDs). In addition, the radon concentration was continuously measured in one location by using the methods with SSNTDs and AlphaGuard counter. The influence of the geological and meteorological conditions as well as phosphate and building material dust on the radon concentration in the outdoor air of the areas studied was investigated. The committed equivalent doses due to 218Po and 214Po radon short-lived progeny were evaluated in different tissues of the respiratory tract of the members of the public from the inhalation of outdoor air. The annual effective dose due to radon short-lived progeny from the inhalation of outdoor air by the members of the rural population was estimated.


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