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Abstract
Uranium is a naturally occurring radioactive element present in trace amount throughout the earth's crust. Radon is a progeny of uranium decay series formed from the radioactive decay of radium in the ground water, soil, environment, oil and gas deposits. The lung cancer risk depends on the above recommendation level concentration of radon, thoron and their decay product in the air.
The measurement of indoor radon and thoron decay product concentration in houses of Shahjahanpur and Hardoi have been carried out using deposition based direct radon progeny sensors (DRPS) and direct thoron progeny sensors (DTPS) technique. The concentration of radon and thoron is observed to be higher in mud houses as compared to the cemented houses.
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References
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References
BEIR (1999) Report of the Committee on the Biological Effects of Ionizing, Natl. Res Council. Natl. Acad. Press. , Washington D.C.Haerting, F.H. and Hesse, W., (1879)., Health Phys. 30, 296
IAEA, Bulletin of International Atomic Energy Agency, (1988). 88-3069. IAEA/PI/A 114 E.
ICRP, International Commission on Radiological Protection (2000). ICRP Publication No. 85, Annals of the ICRP, Pergamon Press, New York.
Mishra Rosaline and Mayya Y.S., 2008. Study of a deposition based Direct Thoron Progeny Sensor (DTPS) technique for estimating Equilibrium Equivalent Thoron Concentration (EETC) in the indoor environment. Radiation Measurement, 43, 1408-1416. DOI: https://doi.org/10.1016/j.radmeas.2008.03.002
Martz, D. E., Rood, A. S., George, J. L., Pearson, M. D., Langner Jr., H. (1991) Year to year to year variations in annual average indoor radon concentrations. Health Phys. 61, 413 DOI: https://doi.org/10.1097/00004032-199109000-00012
Narayanan, K.K., Krishnan, D. and Subbaramu, M.C., (1991). ISRP (K)-BR-3, ISRP, Kalpakkam Chapter.
Ramola, R.C., Rawat, R.B.S., Kandari, M.S., Ramachandran, T.V., Eappen, K.P. and Subba Ramu, M.C. (1996). Indoor Built Environ. 5, 364-366. DOI: https://doi.org/10.1159/000463753
Ramachandran, T.V. (1998) Proc. 11th National Symposium on Solid State Nuclear Track Detectors, Amritsar, pp. 50-68.
Sahoo, B.K., Sapra, B.K., Kanse, S.D., Gaware, J.J., Mayya, Y.S., 2013. A new pin-hole discriminated 222Rn/220Rn passive measurement device with single entry face. Radiat. Meas. DOI: https://doi.org/10.1016/j.radmeas.2013.08.003
Subba Ramu M.C., Muraleedharan T.V. And Sheikh A.N., ‘’Methods and Measurements of Indoor Levels of Rn222 and its Daughters’’ BARC Rep. No. 1390, 1988.
UNSCEAR (2000), United Nations Scientific Committee on the Effects of Atomic Radiations, Report to the General Assembly, United Nations, New York.