Studies on radon/thoron and their decay products in granite quarries around Bangalore city, India |
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| Authors: | C Ningappa J Sannappa M S Chandrashekara and L Paramesh |
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| Institution: | (1) Departamento de Biolog?a y Producci?n de los Vegetales, Area de Cristalograf?a y Mineralog?a, Universidad de Extremadura, Avda. de Elvas s/n, 06071 Badajoz, Spain;(2) Departamento de Agroqu?mica y Medio Ambiente, Universidad Miguel Hern?ndez, Avda. de la Universidad s/n, 03102 Elche (Alicante), Spain;(3) Departamento de Ciencias Experimentales, Unidad de Mineralog?a Aplicada y Ambiental, Universitat Jaume I, Campus de Riu Sec s/n, 12080 Castell?n, Spain; |
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| Abstract: | The radon survey was performed in granite quarries around Bangalore rural district and Bangalore city as part of a lung cancer
epidemiological study. Long duration measurements of indoor and outdoor radon, thoron and their progenies concentrations were
made around granite quarries of Bangalore rural district by using Solid State Nuclear Track Detector (SSNTD, LR-115, Type-II
Plastic track detector) during summer and winter period (2006–07). The increase of radioactivity in granite quarries and inhalation
dose to workers and populations near the quarries have been summarized. The higher concentrations of radon and thoron in granite
quarries suggest radiation health effects on workers and public around the quarries is higher than permissible levels. The
results are presented and analyzed with reference to ICRP limits. |
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