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Assessment of activity and effective dose rate of222Rn in several dwellings in Bamako, Mali

Published online by Cambridge University Press:  22 February 2013

I. Traoré ,
A. Nachab ,
A. Bâ ,
A. Nourreddine  and
V. Togo
I. Traoré
Affiliation:
Département de Physique, Université de Bamako, BP E3206, Bamako, Mali. Groupe RaMsEs, Institut Pluridisciplinaire Hubert Curien (IPHC), UMR 7178 CNRS/IN2P3, 23 rue du Loess, BP 28, 67037 Strasbourg Cedex 2, France.
A. Nachab*
Affiliation:
Groupe RaMsEs, Institut Pluridisciplinaire Hubert Curien (IPHC), UMR 7178 CNRS/IN2P3, 23 rue du Loess, BP 28, 67037 Strasbourg Cedex 2, France.
A. Bâ
Affiliation:
Département de Physique, Université de Bamako, BP E3206, Bamako, Mali.
A. Nourreddine
Affiliation:
Groupe RaMsEs, Institut Pluridisciplinaire Hubert Curien (IPHC), UMR 7178 CNRS/IN2P3, 23 rue du Loess, BP 28, 67037 Strasbourg Cedex 2, France.
V. Togo
Affiliation:
INFN, Sezione di Bologna, viale C. Berti Pichat 6/2, 40127 Bologna, Italy.
*
* e-mail: [email protected]
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Abstract

We used CR-39 detectors to evaluate radon activity concentrations in several habitationsof Bamako. The calibration factor of the dosimeters was determined experimentally withknown radon activity concentrations inside a radon chamber, and was also simulated withMCNPX. The experimental and simulated calibration factors are, respectively,kexp = 0.119 ± 0.017 and ksim= 0.126 ± 0.007 tr.cm-2.d-1.Bq-1.m3. Indoorradon activity concentrations in Bamako were found to vary from 70 ± 18 to 154 ± 35Bq.m-3. No significant differences were observed in the mean radon activityconcentrations compared with five other African countries. Taking into account anoccupancy factor of 0.8 and an equilibrium factor of 0.4 for radon indoors, the effectivedose rate ranges from 1.77 to 2.35 mSv.y-1. In all cases the radon activityconcentrations measured were below the action limits recommended by the InternationalCommission on Radiological Protection (ICRP) Statement on Radon.

Keywords

222Rn measurementeffective dose rateCR-39MCNPX
Type
Research Article
Information
Radioprotection , Volume 48 , Issue 2 , April 2013 , pp. 277 - 284
Copyright
© EDP Sciences, 2013

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References

Andam, A.A.B. (1992) Indoor and soil radon measurements in a tropical climate, Nucl. Tracks Radiat. Meas. 20, 371-375.Google Scholar
Al-Azmi, D., Al-Abel, T., Alnasari, M.S., Borham, E.E., Chekir, Z., Khalifa, M.S., Shweikani, R. (2011) Coordinated indoor radon surveys in some Arab countries, Radioprotection 47 (2), 205-217.Google Scholar
Beozzo, M., Botrazzi, E., Calligola, P., Degli Esposti, L., Folesani, M., Rassine, J.F., Giacomelli, G., Lembo, L., Maltoni, O., Massera, F., Nicoli, F., Pal, B., Patrizii, L., Poli, B., Predieri, F., Spagnoli, M., Serra, P., Sini, G.P., Spurio, M., Togo, V. (1991) Measurement of indoor radon levels in the Bologna metropolitan area, Nucl. Tracks Radiat. Meas. 19, 297-298.Google Scholar
Hassib, G.M., Hussein, M.I., Amer, H.A., Piesch, E. (1993) Assessment of radon concentration in Egyptian dwellings by using a passive technique, Nucl. Tracks Radiat. Meas. 22, 341-344.Google Scholar
Jojo, P.J., Khan, A.J., Tyagi, R.K., Ramachandran, T.V., SubraRamu, M.C., Rajendra Prasad (1994) Interlaboratory calibration of track-etch detectors for the measurement of radon and radon daughter levels, Radiat. Meas. 23, 715-724.
Khan, A.J., Varshney, A.K., Rajendra, Prasad, Tyagi, R.K. (1987) The indoor concentration of radon and its daughters in a multistorey building, Nucl. Tracks Radiat. Meas. 13, 77-80.Google Scholar
Oufni, I., Misdaq, M.A., Amrane, M. (2005) Radon level and radon effective dose rate determination in Moroccan dwellings using SSNTDs, Radiat. Meas. 40, 118-123.Google Scholar
Pelowitz D.B. (2008) MCNPX User's Manual, version 2.6.0. Los Alamos National Laboratory.
Surinder, S., Dinesh, K.S., Ajay, K. (2004) Environmental radon studies using solid state nuclear track detectors, J. Environm. Rad. 76, 369-376.Google Scholar
UNSCEAR (2009) United Nation Scientific Committee on the Effect of Atomic Radiation, Sources and Effects on Ionizing Radiation. United Nations, New York.
Wrixon, A.D. (2008) New ICRP recommendations, J. Rad. Prot. 28, 161-168.Google Scholar