Abstract
Measurement of dissolved radon and 226 Ra in groundwater was carried out in 30 different locations around the uranium mining and ore processing area of Jaduguda, Jharkhand, India. Activity concentration of 226 Ra was found to be very low, whereas dissolved radon was observed to be slightly elevated due to geological features of the area consisting of uranium mineralization. No definite relation was observed between radon and 226 Ra in groundwater. The annual dose due to ingestion of radon containing water estimated at 60% locations was less than 100 μSv. The maximum ingestion dose was found to be 300 μSv to adult members of the public. The average dose due to the ingestion of radon in water was 94 μSv, which is less than the stipulated limit of 1000 μSv prescribed by regulatory body.
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