Assessment of Indoor Radon Exposure Affecting Lung cancer Risks in Muang District, Yala Province

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Published: Jul 27, 2022
Keywords:
Radon exposure assessment Indoor radon concentration Radon gas detector Lung cancer

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Pattama Pisapak
General Science Program, Science Technology and Agriculture, Yala Rajabhat University, Muang, Yala, 95000

Abstract

Indoor radon concentration was measured in Muang district, Yala province, by using a solid state nuclear track detector (SSNTDs; CR-39). The suitable etching condition can be used for producing tracks in water bath, with 100 min etching in 6.25 Mol/L of NaOH at 85๐ C. A total of 30 indoor and detectors ware set for 40 days. The results of indoor radon concentration ranged from 20.70 ± 3.44 Bq/m3 to 24.57 ± 6.30 Bq/m3, which the average value of 22.63 ± 1.74 Bq/m3. The highest of indoor radon concentration found that in Lam Mai sub-district and the lowest obtained in Budi sub-district. Forthermore, the present values of the average excess lifetime cancer risk (ELCR; 0.22%) for all detectors were lower than the recommend by US EPA of 1.3 %. According to the ELCR and risk of lung cancer estimated from 30 dwellings surveyed, It is found that the lung cancer cases per year per million person (LLC) was estimated to be 10, which is lower than the limit range of 170-230 per million persons recommended by ICRP.

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How to Cite
Pisapak, P. (2022). Assessment of Indoor Radon Exposure Affecting Lung cancer Risks in Muang District, Yala Province. YRU Journal of Science and Technology, 7(2), 43–52. retrieved from https://li01.tci-thaijo.org/index.php/yru_jst/article/view/253146
Issue
Vol. 7 No. 2 (2022): พฤษภาคม - สิงหาคม
Section
Research Article
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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

บทความ ข้อมูล เนื้อหา รูปภาพ ฯลฯ ที่ได้รับการเผยแพร่ในวารสารวิทยาศาสตร์และเทคโนโลยี มรย. นี้ ถือเป็นลิขสิทธิ์ของวารสารวิทยาศาสตร์และเทคโนโลยี มรย. หากบุคคลหรือหน่วยงานใดต้องการนำทั้งหมดหรือส่วนหนึ่งส่วนใดไปเผยแพร่ต่อหรือกระทำการใดๆ จะต้องได้รับอนุญาตเป็นลายลักษณ์อักษรจากวารสารวิทยาศาสตร์และเทคโนโลยี มรย. ก่อนเท่านั้น

Author Biography

Pattama Pisapak, General Science Program, Science Technology and Agriculture, Yala Rajabhat University, Muang, Yala, 95000

Nowadays, many countries have significantly focused on indoor air quality because of its effects on human health. In particular, exposure to radon (222Rn), which is a naturally occurring radioactive gas, has an effect on causing lung cancer in humans. The purpose of this study is to measure indoor radon concentrations and assess risk factors for radon exposure associated with lung cancer in Muang district, Yala province. Using the radon detector, plastic sheet type CR-39 installed inside dwellings, a total of 90 samples for 40 days. Suitable etching conditions can be used for producing latent alpha–particle tracks with 100 min of etching in 6.25 mol/L of NaOH at 85๐ C. The results of indoor radon concentration ranged from 20.70 ± 3.44 Bq/m3 to 24.57 ± 6.30 Bq/m3, which the average value of 22.63 ± 1.74 Bq/m3. The lowest indoor radon concentration was found in Budi sub-district and the highest was obtained in Lam Mai sub-district. Furthermore, the present values of the average excess lifetime cancer risk (ELCR; 2.20 x 10-3) for all detectors were higher than the recommended by the UNSCEAR of 0.29 x 10-3. However, when considering the average number of lung cancer cases per year per million people (LCC), it was estimated to be 10.27, which is lower than the limit range of 170-230 per year per million people recommended by ICRP. It was shown that the study area was not at risk of developing lung cancer due to radon exposure in dwellings.

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