Real-time indoor radon exposure in the city of Zacatecas, Mexico

Abstract

²²²Rn and its daughter elements are considered dangerous for health. Exposure was measured to find the radon reference levels in Zacatecas. Indoor levels were measured since June 2000 until June 2001. RM-60 and RM-70 Geiger Muller-based systems were used to measure radiation background. The RM-70 system was coupled to a fan-filter and used to detect alpha decay from radon and its daughters. The mean exposure rates were in the range from 21mR/hr to 30mR/hr. The exposure rates were compared for different periods of time.