A. C. Patra
Bhabha Atomic Research Centre
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Featured researches published by A. C. Patra.
Radiation Protection Dosimetry | 2013
A. C. Patra; S. Mohapatra; S. K. Sahoo; P. Lenka; J. S. Dubey; R. M. Tripathi; V. D. Puranik
Uranium is a heavy metal that is not only radiologically harmful but also a well-known nephrotoxic element. In this study, occurrence of uranium in drinking water samples from locations near the uranium mining site at Jaduguda, India, was studied by Laser-induced fluorimetry. Uranium concentrations range from 0.03 ± 0.01 to 11.6 ± 1.3 µg l(-l), being well within the US Environmental Protection Agency drinking water limit of 30 μg l(-1). The ingestion dose due to the presence of uranium in drinking water for various age groups varies from 0.03 to 28.3 μSv y(-1). The excess lifetime cancer risk varies from 4.3×10(-8) to 1.7×10(-5) with an average value of 4.8×10(-6), much less than the acceptable excess lifetime cancer risk of 10(-3) for radiological risk. The chemical risk (hazard quotient) has an average value of 0.15 indicating that the water is safe for drinking.
Radiation Protection Dosimetry | 2013
P. Lenka; S. K. Sahoo; S. Mohapatra; A. C. Patra; J. S. Dubey; D. Vidyasagar; R. M. Tripathi; V. D. Puranik
A natural high background radiation area is located in Chhatrapur, Odisha in the eastern part of India. The inhabitants of this area are exposed to external radiation levels higher than the global average background values, due to the presence of uranium, thorium and its decay products in the monazite sands bearing placer deposits in its beaches. The concentrations of (232)Th, (238)U, (226)Ra, (40)K and (137)Cs were determined in cereals (rice and wheat), pulses and drinking water consumed by the population residing around this region and the corresponding annual ingestion dose was calculated. The annual ingestion doses from cereals, pulses and drinking water varied in the range of 109.4-936.8, 10.2-307.5 and 0.5-2.8 µSv y(-1), respectively. The estimated total annual average effective dose due to the ingestion of these radionuclides in cereals, pulses and drinking water was 530 µSv y(-1). The ingestion dose from cereals was the highest mainly due to a high consumption rate. The highest contribution of dose was found to be from (226)Ra for cereals and drinking water and (40)K was the major dose contributor from the intake of pulses. The contribution of man-made radionuclide (137)Cs to the total dose was found to be minimum. (226)Ra was found to be the largest contributor to ingestion dose from all sources.
Radiation Protection Dosimetry | 2013
S. Mohapatra; S. K. Sahoo; A. Vinod Kumar; A. C. Patra; P. Lenka; J. S. Dubey; V. K. Thakur; R. M. Tripathi; V. D. Puranik
The specific activity of naturally occurring radioactive materials and (137)Cs in surface soils around the new Bhabha Atomic Research Centre site at Visakhapatnam region, Eastern India, has been determined using high-resolution gamma-ray spectrometry as part of a baseline radiological survey. Radiation hazard for the samples was assessed by radium equivalent activity (Raeq) and absorbed gamma dose rate (D). The mean absorbed gamma dose rate was found to be 104.9 nGy h(-1). The average annual effective dose equivalent was found to be 0.13 mSv y(-1).
Journal of Radioanalytical and Nuclear Chemistry | 2015
A. C. Patra; S. Mohapatra; Amit Kumar; P. M. Ravi; R. M. Tripathi
Essential and toxic element concentrations were measured in fish from coastal areas of Pudimadaka near Vishakhapatnam by neutron activation analysis. Elemental concentrations were observed to be within guideline values fit for human consumption. Correlation among elements suggests similar biogeochemical properties and possibly similar sources. The daily dietary intake values were comparable with reported literature from India and ICRP reference man. Hazard Quotients for all elements were <1. These data will serve as baseline values of elemental concentrations that can be compared with future elemental levels during the operational and post-operational stages of the nuclear facility to be set up at this location. They can also be useful for further studies to identify the spatial and seasonal variations of elements in fish species and monitor the concentration level of elements in this region.
Environmental Monitoring and Assessment | 2013
A. C. Patra; S. K. Sahoo; R. M. Tripathi; V. D. Puranik
Journal of Radioanalytical and Nuclear Chemistry | 2014
S. Mohapatra; S. K. Sahoo; J. S. Dubey; A. C. Patra; V. K. Thakur; S. K. Tripathy; D. Vidyasagar; S.V. Godbole; P. M. Ravi; R. M. Tripathi
Archive | 2011
Jagdev Singh; Raghavendra B Prasad; P. Venkatakrishnan; K. Sankarasubramanian; Dipankar Banerjee; Raja Bayanna; Shibu K. Mathew; Jayant Murthy; Prasad Subramaniam; R. Ramesh; S. Kathiravan; S. Nagabhushana; P. K. Mahesh; P. K. Manoharan; Wahab Uddin; S. Sriram; Amit Kumar; Nandita Srivastava; Koteswara Rao; Cl Nagendra; P Chakraborthy; K. Sriram; R. Venkateswaran; T. N. Krishnamurthy; P Sreekumar; Ks Sarma; Raghava Murthy; Kh Navalgund; Drm Samudraiah; Narayan P Babu
Journal of Radioanalytical and Nuclear Chemistry | 2013
R. M. Tripathi; A. C. Patra; S. Mohapatra; S. K. Sahoo; Amit Kumar; V. D. Puranik
Journal of Radioanalytical and Nuclear Chemistry | 2015
S. Mohapatra; S. K. Sahoo; J. S. Dubey; A. C. Patra; V. K. Thakur; S. K. Tripathy; D. V. Sagar; S.V. Godbole; P. M. Ravi; R. M. Tripathi
Current Science | 2017
B. Raghavendra Prasad; Dipankar Banerjee; Jagdev Singh; S. Nagabhushana; Amit Kumar; P. U. Kamath; S. Kathiravan; Suresh Venkata; N. Rajkumar; Vishwanath Natarajan; Madhur Juneja; Pawan Somu; Vaibhav Pant; Nigar Shaji; K. Sankarsubramanian; A. C. Patra; R. Venkateswaran; Abhijit Avinash Adoni; S. Narendra; T. R. Haridas; Shibu K. Mathew; R. Mohan Krishna; K. Amareswari; Bhavesh Jaiswal