Natural radioactivity and indoor radiation measurements in buildings and building materials in Gobichettipalayam town
Autor: | S. Selvasekarapandian, N. Nidhya, J. Malathi, V. Meenakshisundaram, R. Usharani, M. T. Jose, D. Khanna, G.M. Brahmanandhan |
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Rok vydání: | 2007 |
Předmět: |
Dosimeter
Health Toxicology and Mutagenesis Radiation dose Public Health Environmental and Occupational Health Environmental engineering chemistry.chemical_element Mineralogy Radiation Pollution Thermoluminescence Analytical Chemistry Radium Nuclear Energy and Engineering chemistry Environmental science Radiology Nuclear Medicine and imaging Spectroscopy Natural radioactivity |
Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 274:373-377 |
ISSN: | 1588-2780 0236-5731 |
Popis: | Samples of natural and manufactured building materials used by the people of Gobichettipalayam town have been analyzed for 226Ra, 232Th and 40K using gamma-ray spectrometry. Radium equivalent activity of the materials has been measured using the formula given by OECD and the geometric mean value of sand, clay and cements are found to be 53.53 Bq·kg−1, 89.09 Bq·kg−1 and 72.25 Bq·kg−1, respectively. The radium equivalent activities obtained in the building materials are all well below the acceptable limit. The indoor gamma-dose has been measured using thermoluminescence dosimeters and it was found in the range of 1051.2–3946.0 μGy/year. The annual effective indoor gamma radiation dose to the people of Gobichettipalayam town has been found to be 0.8 mSv/y. |
Databáze: | OpenAIRE |
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