Dose estimation from the exposure to radon, thoron and their progeny concentrations in the environs of Kangra area, Himachal Himalayas, India
| Autor: | Ajay Kumar, Kamini Mehta, Sumit Sharma, Saurabh Narang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Veterinary medicine
Environmental Engineering 0208 environmental biotechnology Geography Planning and Development chemistry.chemical_element Radon 02 engineering and technology 010501 environmental sciences 01 natural sciences World health 020801 environmental engineering chemistry Dose estimation Environmental Chemistry Thoron Progeny Environmental science 0105 earth and related environmental sciences Water Science and Technology |
| Zdroj: | Groundwater for Sustainable Development. 11:100409 |
| ISSN: | 2352-801X |
| Popis: | The present investigation includes assessment of radon, thoron and their progeny concentrations in the environment of Kangra district, Himachal Pradesh, India using pin hole based single entrance dosimeters and time deposition based progeny sensors (DTPS/DRPS). The total equilibrium equivalent radon (EECR) and thoron (EECT) for attached and unattached fractions have been found to vary from 8.04 to 29.58 Bq/m3 with an average of 13.94 Bq/m3 and 0.18–2.18 Bq/m3 with an average of 1.23 Bq/m3 respectively. The equilibrium factors for radon and thoron progeny which depend upon various environmental factors, have also been evaluated. These have been found to be varying from 0.17 to 0.77 and 0.01 to 0.06 for radon and thoron respectively. The calculated annual effective doses for radon (0.51–1.86 mSv/y) and thoron (0.05 to o.61 mSv/y) have been found to be much below the recommended range of 3–10 mSv/y given by International Commission of Radiological Protection (ICRP) and level of 10 mSv/y by World Health Organization (WHO). Hence, the inhabitants of investigated region appear to be safe from exposure to radon, thoron and their progenies. |
| Databáze: | OpenAIRE |
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