The food consumption pattern of the population along the Kerala coast including the monazite bearing high radiation belt, was determined through a detailed dietary survey. The food materials which constituted the diet of this population were assayed for their radioactive content. Based on these data, the daily intake of radioactivity through diet was computed. The daily per capita dietary intake of gross alpha, gross beta, 85 keV gamma, radium-228 and potassium-40 activity has been estimated to be 215, 3648, 96, 162 and 3551 pCi, respectively.
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Mistry et al. (1970) studied this question.
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