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Jha, V. N.
- Distribution of Naturally Occurring Radionuclides Uranium and 226Ra in Groundwater Adjoining Uranium Complex of Turamdih, Jharkhand, India
Abstract Views :224 |
PDF Views:130
Authors
Affiliations
1 Health Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, IN
2 Uranium Corporation of India Limited, Turamdih 832 102, IN
1 Health Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, IN
2 Uranium Corporation of India Limited, Turamdih 832 102, IN
Source
Current Science, Vol 108, No 12 (2015), Pagination: 2266-2272Abstract
Estimation of radionuclide content is essential for assessment of individual exposure in areas where groundwater is the principal source of drinking water. Elevated levels can be expected in areas known for radioactive mineral deposits and anthropogenic activities like mining and ore processing industry. The aim of this study is to determine the uranium and 226Ra in groundwater sources adjoining and away from uranium mining and ore processing industry at Turamdih, Jharkhand. The concentration of uranium in well/tubewell samples analysed nearby and away from the tailings ponds ranged from 0.1 to 8.4 μg l-1 and 226Ra varied from 4 to 269 mBq l-1. The wide variation of activity concentration is due to regions of uranium deposits with elevated level of radium in the earth's crust and geological faults, when compared to lower concentration profile of radium in earth crust. The ingestion of uranium and 226Ra in the adult population residing around Turamdih mining complex through drinking water sources ranged from 0.81 μSv year-1 to 3.8 μSv year-1 respectively. This is much lower than 100 μSv year-1, that is recommended by WHO for ingestion from intake of a single radionuclide. The groundwater monitoring carried out over four years around Turamdih mining complex indicates that there has been no observable impact on groundwater sources due to mining and ore processing activities in this region.Keywords
Groundwater, Ingestion Dose, 226Ra, Uranium.Full Text
- Assessment of Human Exposure to Dissolved Radon in Groundwater around the Uranium Industry of Jaduguda, Jharkhand, India
Abstract Views :284 |
PDF Views:93
Authors
Affiliations
1 Health Physics Unit, Environmental Survey Laboratory, Jaduguda, Singbhum (E), Jharkhand 832 102, IN
2 Health Physics Division, Environmental Studies Section, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, IN
1 Health Physics Unit, Environmental Survey Laboratory, Jaduguda, Singbhum (E), Jharkhand 832 102, IN
2 Health Physics Division, Environmental Studies Section, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, IN
Source
Current Science, Vol 109, No 10 (2015), Pagination: 1855-1860Abstract
Measurement of dissolved radon and 226Ra in groundwater was carried out in 30 different locations around the uranium mining and ore processing area of Jaduguda, Jharkhand, India. Activity concentration of 226Ra 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 226Ra 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.Keywords
Groundwater, Ingestion Dose, Radon, Uranium Mining.Full Text
- Survey of uranium in drinking water sources in India: interim observations
Abstract Views :211 |
PDF Views:80
Authors
Affiliations
1 Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, IN
2 Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India; Homi Bhabha National Institute, Trombay, Mumbai 400 085, IN
3 Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, IN
1 Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, IN
2 Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India; Homi Bhabha National Institute, Trombay, Mumbai 400 085, IN
3 Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, IN
Source
Current Science, Vol 120, No 9 (2021), Pagination: 1482-1490Abstract
A nationwide survey is being conducted for mapping uranium content in drinking water sources across India, in association with local educational and research institutions. For this, an optimum grid size of 6 × 6 sq. km was selected based on the international practices for geochemical mapping. About 55,554 surface as well as groundwater samples, used for drinking purpose, were collected covering approximately 1.2 × 106 sq. km. Light emitting diode-based fluorimeter having wide dynamic range and 0.2 μg l–1 lower detection limit was used for direct measurement of uranium content in the water samples. Uranium was detected in 83.6% of all the collected water samples. The geometric mean of uranium concentration in surface and groundwater samples was found to be 0.8 μg l–1 (range: ≤0.2–22 μg l–1) and 2.1 μg l–1 (range: ≤0.2–4918 μg l–1) respectively. Out of 12 water quality parameters measured to understand the geochemical processes governing uranium content in water sources, eight were found to exceed the acceptable limits set by the Bureau of Indian Standards for drinking water. The parameters sulphate, chloride, nitrate, fluoride, total dissolved solids, alkalinity and hardness exceeded their limits by 4.2%, 12.9%, 14%, 20.5%, 34.3%, 45% and 51.6% respectively. Uranium content in 98% of groundwater samples was found to be less than the national limit set by the Atomic Energy Regulatory Board for radiological safety. Dissolved uranium content in groundwater samples showed an upward trend with total dissolved solids and depth of water sources. No surface water samples exceeded the prescribed regulatory limit.Keywords
Drinking water sources, fluorimeter, surface and groundwater, uranium, water quality parameters.Full Text
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