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Measurements of indoor radon, thoron and their progeny in Farrukhabad city of Uttar Pradesh, India
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D. Verma   , M. Shakir Khan , M. Zubair |
| , dpkapd@gmail.com |
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Abstract: (9302 Views) |
| Background: More than 50% of the total dose
received by human beings from all sources of
radiation (both from natural and manmade) comes
from radon and its progeny which is responsible for
lung cancer in many cases. Materials and Methods:
In the present study, the measurements have been
carried out by using twin chamber dosimeter cups
with LR-115 type-II detectors. The value of track
density of detectors gives the concentration of radon,
thoron and their progeny in different modes. Results:
The average value of radon and thoron concentration
was found 59 and 28 Bq/m3, respectively. The
inhalation dose was found to vary from 1.6 to 2.9
mSv/y. The average value of PAEC for radon and
thoron was found 6.4 mWL and 0.75 mWL, respectively.
Total annual exposure and annual effective
dose varies from 0.23 to 0.39 WLM and 0.87 to 1.51
mSv/y respectively. The values of life time fatality risk
was found to vary from 0.68 x 10-4 to 1.18 x 10-4.
Conclusion: These measurements show that the
radon/thoron concentrations and annual effective
dose received by the population of the area are well
below the action level recommended by the
International Commission on Radiological Protection
(ICRP). Iran. J. Radiat. Res., 2012 10(3‐4): 193‐196
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| Keywords: Radioactivity, twin chamber dosimeter, track density, inhalation dose. |
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Full-Text [PDF 256 kb]
(2076 Downloads)
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Type of Study: Short Report |
Subject:
Radiation Biology
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