Indoor radon (222Rn) in a public workplace of Aldama, Chihuahua, Mexico and level of worker exposure

Abstract

The inhalation of radon gas (222Rn) induces lung cancer in humans. The objective of this research was to quantify the 222Rn levels in a public office. The study was carried out in two stages; in the first stage (FS), the 222Rn was determined at three high levels (0.74 m, 1.33 m and 2.06 m) away from the main door, while in the second stage (SS) it was determined at the center of the office. The concentration was obtained with a portable AlphaGuard device, Professional Radon Monitor. An ANOVA analysis was performed for each step (α = 0.05), considering a factorial arrangement design 3×2. For both FS and SS were detected statistical differences for the height factor (p < 0.05) and time factor (p < 0.05), but not for the interaction (p > 0.05). The 222Rn concentration was greatest at the height of 0.74 m (161.31 Bq m-3 in FS and 168.21 Bq m-3 in SS) which is higher than that of the international standards of the World Health Organization (WHO) of 100 Bq m-3 and higher than the standards of the United States of America (USA) of 148 Bq m-3.

https://doi.org/10.15174/au.2020.2458
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