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Radon is the primary source of natural radiation and accounts for approximately 50% of the natural radiation dose received by the public. Therefore, investigating its distribution in daily environments is important to human safety and health. To address the unclear spatial distribution characteristics of indoor radon concentration and verify the applicability of the measurement methods, a RAD7 radon meter was used to measure the radon concentration distribution in a single room under ventilated and closed environments by adopting the control variable and weighted average data processing methods. The vertical distribution characteristics of radon across different floors and error differences among the various measurement methods were compared. The results show that the radon concentration within a single room presents an uneven spatial distribution, with accumulation tendencies near the ground and at respiratory height, and that ventilation can significantly reduce the concentration differences at each measuring point. An obvious vertical gradient exists in the indoor radon concentration, which decreases progressively from lower to higher floors, with significantly higher concentrations on the first floor than on the second and third floors,while the concentrations on the second and third floors remain relatively similar. Measurement periods of15 and 30 minutes exhibit substantial errors, whereas 1-and 3-hour periods provide more accurate radon concentration levels. The measurement accuracy of the three-point method is improved after weight optimization, enabling effective resolution of spatial heterogeneity problems and is suitable for engineering investigations and emergency responses. The segmentation method demonstrates good data continuity and compliance with standard requirements, making it applicable to scientific research and compliance assessments.
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Basic Information:
DOI：10.20189/j.cnki.CN/61-1527/E.202602007
China Classification Code:X591
Citation Information:
[1]HUO Yonggang,SUN Zhiqiang,ZHANG Tiejun ,et al.Comparison of Distribution Characteristics and Measuring Methods of Radon in Indoor Environment[J].Journal of Rocket Force University of Engineering,2026,40(02):75-83.DOI:10.20189/j.cnki.CN/61-1527/E.202602007.
2026-04-15
2026-04-15