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Assessment of activity and effective dose rate of 222Rn in several dwellings in Bamako, Mali

  • I. Traoré (a1) (a2), A. Nachab (a2), A. Bâ (a1), A. Nourreddine (a2) and V. Togo (a3)...

Abstract

We used CR-39 detectors to evaluate radon activity concentrations in several habitations of Bamako. The calibration factor of the dosimeters was determined experimentally with known radon activity concentrations inside a radon chamber, and was also simulated with MCNPX. 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. Indoor radon activity concentrations in Bamako were found to vary from 70 ± 18 to 154 ± 35 Bq.m-3. No significant differences were observed in the mean radon activity concentrations compared with five other African countries. Taking into account an occupancy factor of 0.8 and an equilibrium factor of 0.4 for radon indoors, the effective dose rate ranges from 1.77 to 2.35 mSv.y-1. In all cases the radon activity concentrations measured were below the action limits recommended by the International Commission on Radiological Protection (ICRP) Statement on Radon.

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[1]Andam, A.A.B. (1992) Indoor and soil radon measurements in a tropical climate, Nucl. Tracks Radiat. Meas. 20, 371-375.
[2]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.
[3]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.
[4]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.
[5]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.
[6]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.
[7]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.
[8]Pelowitz D.B. (2008) MCNPX User's Manual, version 2.6.0. Los Alamos National Laboratory.
[9]Surinder, S., Dinesh, K.S., Ajay, K. (2004) Environmental radon studies using solid state nuclear track detectors, J. Environm. Rad. 76, 369-376.
[10]UNSCEAR (2009) United Nation Scientific Committee on the Effect of Atomic Radiation, Sources and Effects on Ionizing Radiation. United Nations, New York.
[11]Wrixon, A.D. (2008) New ICRP recommendations, J. Rad. Prot. 28, 161-168.

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