Measurement of natural radionuclides in bricks and brick-making clays from Cuddalore district, Tamilnadu, India

Measurement of natural radionuclides in bricks and brick-making clays from Cuddalore district, Tamilnadu, India 1 corresp first-author Corresponding author. E-mail address: viruthagirigv@rediffmail.com Corresponding author. E-mail address: viruthagirigv@rediffmail.com viruthagirigv@rediffmail.com 2 1 3 4 5 Deptartment of physics, Annamalai University, Annamalainagar-608002, Tamilnadu, India Deptartment of physics, Annamalai University, Annamalainagar-608002, Tamilnadu, India Post Graduate and Research Department of Physics, Govt. Arts College, Tiruvanamala-606603, Tamilnadu, India Post Graduate and Research Department of Physics, Govt. Arts College, Tiruvanamala-606603, Tamilnadu, India Department of Physics, Govt. Arts College, Chidambaram-608102, Tamilnadu, India Department of Physics, Govt. Arts College, Chidambaram-608102, Tamilnadu, India Department of Physics, Sacred Heart College, Thirupattur-606605, Tamilnadu, India Department of Physics, Sacred Heart College, Thirupattur-606605, Tamilnadu, India Radiological Safety Division, Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam-603102, Tamilnadu, India Radiological Safety Division, Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam-603102, Tamilnadu, India In India, bricks as building materials are mainly prepared by clay using the deposited sediments of rivers, and the radionuclide contents in bricks and brick-making clays should vary with origin and geological condition. In this paper, the radionuclide contents of these materials from river bank areas of Cuddalore district, Tamilnadu India are measured by gamma ray spectrometer using NaI(Tl) detector, and compared with those of other countries. The radiation hazard indices, which are evaluated by radium-equivalent (Ra eq ) activity, are lower than that of NEA-OECD. Natural radioactivity Building materials Gamma-ray spectrometer Ra eq activity References United Nations Scientific committee on the Effects of atomic radiation (UNSCEAR) . Sources and risks of ionizing radiation, 1988. Report to the general assembly with Annexes . New York : United Nations . Sources and risks of ionizing radiation, 1988. Report to the general assembly with Annexes Gibson J A B , Thompson I M G , Spiers, F W . A guide to the measurement of environmental gamma radiation , National physical laboratory , London , 1993 . A guide to the measurement of environmental gamma radiation Beg M N A , Qureshi M H , Yousa M , et al . Pak J Sci Ind Res , 1989 , 32 : 458 - 463 . Pak J Sci Ind Res Hewamanna R , Sumithrarachchi C S , Mahawatte P , et al . Appl Radiat Isot , 2001 , 54 : 365 - 369 . Appl Radiat Isot NEA-OECD, Nuclear Energy Agency . Exposure to radiation from natural radioactivity in building materials. Reported by NEA group of experts , OECD , Paris , 1979 . Exposure to radiation from natural radioactivity in building materials. Reported by NEA group of experts Beretka J , Mathew P J . Health Phys , 1985 , 48 : 87 - 95 . Health Phys Pan Z , Yang, Y , Guo M . Radiat Prot Dosim , 1984 , 7 : 235 - 238 . Radiat Prot Dosim Ibrahim N , J Env Rad , 1999 , 43 : 255 - 258 . J Env Rad Ackers J G , Den Boer J F , Dejong P , et al . Sci Total Env , 1985 , 45 : 151 - 156 . Sci Total Env Mollah A S , Ahmad G U , Hussain S R , et al . Health Phys , 1986 , 50 : 849 - 851 . Health Phys Somlai J , Horvath M , Kanyar B , et al . Health Phys , 1998 , 75 : 648 - 651 . Health Phys Rizzo S , Brai M , Basile S , et al . Appl Radiat Isot , 2001 , 55 : 259 - 265 . Appl Radiat Isot El-Tahawy M S , Higgy R H . Appl Radiat Isot , 1995 , 46 : 140 - 1406 . Appl Radiat Isot Miah F K , Roy S , Touhiduzzaman M , et al . Appl Radiat Isot , 1998 , 49 : 133 - 137 . Appl Radiat Isot 10.13538/j.1001-8042/nst.21.218-220 2009-12-01 2010-08-20 2021-01-19 2010 Nuclear Science and Techniques 04 21