Outdoor and indoor natural background gamma radiation across Kerala, India

Thomas, John Richard; Sreejith, M. Vishnu; Aravind, Usha K.; Sahu, S. K.; Shetty, Priyalata; Swarnakar, M.; Takale, R. A.; Pandit, G.G.; Aravindakumar, Charuvila T.

doi:10.1039/d1ea00033k

Cited by 8 publications

(2 citation statements)

References 37 publications

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“…The measurement of background radiation levels is essential for comprehending the natural radiation exposure of the population. Notably, similar studies have been conducted in various counties, including Jordan [2], Taiwan [3], Istanbul [4], Iran [5], India [6,7] and Pakistan [8]. The Bagmati province in Nepal presents a significant locale for a study aimed at measuring the background radiation levels, as no prior investigations on natural background radiation have been conducted in this region.…”

Section: Introductionmentioning

confidence: 97%

Study of Natural Background Radiation in Bagmati Province, Nepal

Karki,

Bhatta,

Jha

et al. 2023

J. Nep. Phys. Soc.

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In this research, we explored the influence of natural sources on ambient radiation levels in the surrounding environment. Our investigation involved conducting a comprehensive survey of background radiation across seven districts in the Bagmati province. We utilized a Radalert 100 radiation monitor to measure the background dose rate at 141 different locations. The recorded background ionizing radiation at these sites varied from 0.022 mR/hr to 0.028 mR/hr, averaging at 0.025 mR/hr. The mean dose rate was determined to 2.129 ± 0.172 mSv/y. Subsequently, the obtained dose rates were used to compute the Annual Effective Dose equivalent (AEDE) for the local population, revealing values ranging from 0.240 mSv/yr to 0.294 mSv/yr, with an average of 0.270 mSv/yr. Significantly, these AEDE values exceeded the International Commission for Radiation Protection (ICRP) limit of annual effective dose (1mSv/yr) recommended for the general public. The elevated AEDE levels are likely attributed to the geological characteristics and rock formation in the study area. Despite the higher AEDE, it is important to note that our overall findings suggests no substantial radiological hazard to the public in the study regions.

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Section: Introductionmentioning

confidence: 97%

Study of Natural Background Radiation in Bagmati Province, Nepal

Karki,

Bhatta,

Jha

et al. 2023

J. Nep. Phys. Soc.

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“…Background natural radiation is believed to account for about 80% of this total, although actual values are highly site-specific. For example, high natural background levels are found in Ramsar in Iran, Guarapari in Brazil, Karunagappalli in India [ 2 ], Arkaroola in Australia and Yangjiang in China [ 3 ]. Ramsar, a northern coastal city in Iran, has areas with some of the highest levels of natural radiation measured in populated areas (up to 260 mSv/y) [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Radon Hazard in Central Italy: Comparison among Areas with Different Geogenic Radon Potential

Giustini

Ruggiero

Sciarra

et al. 2022

IJERPH

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Radon (222Rn) is a natural radioactive gas formed in rocks and soil by the decay of its parent nuclide (238-Uranium). The rate at which radon migrates to the surface, be it along faults or directly emanated from shallow soil, represents the Geogenic Radon Potential (GRP) of an area. Considering that the GRP is often linked to indoor radon risk levels, we have conducted multi-disciplinary research to: (i) define local GRPs and investigate their relationship with associated indoor Rn levels; (ii) evaluate inhaled radiation dosages and the associated risk to the inhabitants; and (iii) define radon priority areas (RPAs) as required by the Directive 2013/59/Euratom. In the framework of the EU-funded LIFE-Respire project, a large amount of data (radionuclide content, soil gas samples, terrestrial gamma, indoor radon) was collected from three municipalities located in different volcanic districts of the Lazio region (central Italy) that are characterised by low to high GRP. Results highlight the positive correlation between the radionuclide content of the outcropping rocks, the soil Rn concentrations and the presence of high indoor Rn values in areas with medium to high GRP. Data confirm that the Cimini–Vicani area has inhalation dosages that are higher than the reference value of 10 mSv/y.

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