Determination of Indoor Radon Concentration and Effective Dose Equivalent at Workplaces of Afyonkarahisar Province

Yalım, Hüseyin Ali; Gümüş, Ayla; Ünal, Rıdvan

doi:10.29233/sdufeffd.442298

Cited by 11 publications

(5 citation statements)

References 36 publications

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“…After the exposure time has elapsed, the detector needs to be etched using the NaOH solution, to enlarge the alpha tracks and get ready for optical microscope observation of the appropriate times and temperatures. The etched tracks can then be converted into radon concentrations by using a conversion factor as follows (33)…”

Section: Measurement Technique and Methodologymentioning

confidence: 99%

A Review of Studies on the Seasonal Variation of Indoor Radon-222 Concentration

Belete

Shiferaw

2022

Oncol Rev.

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Due to their electrostatic nature, radon decay products can attach to solid particles and aerosols in the air. Inhalation and ingestion are therefore the two main routes through which people are exposed to radon and its decay products. During the inhalation of these radioactive aerosols, deposition takes place in different regions of the human respiratory tract. The deposited aerosols carrying radon and its progeny undergo a continuous radioactive transformation and expose the lung to ionizing alpha radiation, which can destroy the sensitive cells in the lung, causing a mutation that turns cancerous. Radon which is a colorless, odorless, and tasteless radioactive noble gas is a major health concern and is the second leading cause of lung cancer. To address this, an indoor radon survey was conducted in many countries internationally, with results showing that indoor radon concentration has a seasonal variation. This is due to the fluctuation of environmental parameters and the geological nature of buildings. Its concentration was found to be maximum in the cool (winter) season and a minimum concentration was recorded in the warm (summer) season of the year.

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Section: Measurement Technique and Methodologymentioning

confidence: 99%

A Review of Studies on the Seasonal Variation of Indoor Radon-222 Concentration

Belete

Shiferaw

2022

Oncol Rev.

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“…al. (2018), show that the measured values of radon gas at Workplaces of Afyonkarahisar Province varied from 13 Bq.m -3 to 1,932 Bq.m -3 , and the calculated average values were in the range of 21.75 Bq.m -3 and 1,032.50 Bq.m -3 [9].…”

Section: Introductionmentioning

confidence: 93%

“…Where, C Rn is in Bq.m -3 , F is taken to be 0.4, O is estimated that people spends 80% of their time indoor, T=24 hours x 365 days=8760 h.y -1 , and D converts radon concentration into effective dose, 9 nSv (Bq.m -3 .h -1 ) [12][13][14][15][16][17].…”

Section: Rn D Msv C F O T D =mentioning

confidence: 99%

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Assessment of Indoor Radon Concentration in Residential Buildings at Ouagadougou and Estimation of the Annual Effective Dose

Luc¹,

Kaboré²,

Moumouni³

et al. 2021

RST

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The second most important cause of lung cancer after smoking is a radon gas. Thus, the determination of indoor radon concentrations in residential buildings is an important public health concern. The purpose of this research was to measure the concentration of radon gas in residential homes in the city of Ouagadougou and evaluate the annual effective dose, effective dose equivalent and the relative risk of lung cancer. The present study used the digital radon detector air things of cranium to determine the concentration of radon in twenty one homes at Ouagadougou. The digital radon detector air Things of corentium was placed in each residential building for a minimum period of one week and the concentration values are read every 24 hours. The values recorded are the short term average and the long term average. This study showed that the average radon concentration was 26.90±2.58 Bq/m 3 in residential homes at Ouagadougou. The average radon effective dose rate was calculated as 0.68 mSv per year and the average effective dose equivalent of 1.63 mSv per year. The average relative risk of lung cancer (RRLC) due to indoor exposure was 1.02. The concentration of radon in one house was found to be greater than 100 Bq/m 3 , which is above the level allowed by the World Health Organization (WHO). The radon Effective Dose Equivalent in 14.3% of homes were slightly larger than the limit of the recommended action level (3-10 mSv per year) as reported by the ICRP-1993. It seems necessary to increase the public's awareness of this issue and to take action to reduce radon in homes when the concentrations are above.

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“…The target organ being the lung therefore the tissue weighting factor is 0.12 [21]. Formula (2) below was used to calculate the effective dose to the lung [13] [15] [16] [17] [22].…”

Section: Effective Dose To the Lung (Msv)mentioning

confidence: 99%

Measurement of Radon Concentration and Estimation of Cancer Risk in Twenty-Four Model Houses in the Town of Koudougou

Derra,

Bambara,

Kaboré

et al. 2024

OJAppS

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The objective of our study is to evaluate the concentration of radon ( 86 Rn) inside houses in the town of Koudougou in order to estimate its impact on the health of the population. Indeed, when uranium-rich minerals are found near the surface of the ground, radon concentrations can reach tens of becquerels per cubic meter in enclosed spaces. Given the nature of the geological base of Burkina Faso, this situation is quite probable and certain places that are sometimes poorly ventilated (house, school, office, etc.) can have radon levels high enough to constitute a health problem for occupants. Thus, twenty-four (24) sample houses were identified. In each house, the Corentium digital detector was between 0.8 m and 2 m for at least one week in a place where the occupants estimate that they spend more time of time and measure the concentration of radon in the long term and short term. The recorded data allowed us to determine the Absorbed Dose and the Annual Effective Dose of radon gas for each house in order to estimate the Risk of Cancer and the probable Number of Cases of Lung Cancer per million inhabitants. Thus, the results indicate that the long-term radon concentration varies between 6 Bq/m 3 and 285 Bq/m 3 respectively in houses 11 and 4 compared to 1 Bq/m 3 to 208 Bq/m 3 in the short term in the same houses. Also, in the long term, in control houses 1, 3 and 4, the radon level is above the recommended threshold interval. For the short term, these are houses 1, 3, 4 and 17 respectively with 110 Bq/m 3 , 142 Bq/m 3 , 208 Bq/m 3 and 105 Bq/m 3 . As for the long-term and short-term effective doses, only houses 1, 3, 4, 17 and 24 have values between 3 -10 Sv/year. The estimation of the relative risk of lung cancer gives How to cite this paper:

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Determination of Indoor Radon Concentration and Effective Dose Equivalent at Workplaces of Afyonkarahisar Province

Cited by 11 publications

References 36 publications

A Review of Studies on the Seasonal Variation of Indoor Radon-222 Concentration

A Review of Studies on the Seasonal Variation of Indoor Radon-222 Concentration

Assessment of Indoor Radon Concentration in Residential Buildings at Ouagadougou and Estimation of the Annual Effective Dose

Measurement of Radon Concentration and Estimation of Cancer Risk in Twenty-Four Model Houses in the Town of Koudougou

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