Radon and Thoron exhalation rates in soil near coal mines in Shahdol, Madhya Pradesh

The purpose of this study was to assess the amounts of radon and thoron gas emissions from soil in the vicinity of coal mines within the Shahdol region of Madhya Pradesh, which is in India. We collected and analyzed 50 distinct soil samples to carry out the study. The SMART RnDuo device (produced by AQTEK SYSTEMS) was used to measure the thoron surface exhalation rates (²²⁰Rn) and the radon mass exhalation rates (²²²Rn). This device utilized a mass accumulation chamber integrated with a detection cell coated with scintillation material to measure the exhalation rates. ²²²Rn varies from (3.81-32.79) mBq kg^-1 h^-1with a mean of 14.62 mBq kg^-1 h^-1. ²²⁰Rn varies from (1.50-1002.58) Bqm^-2h^-1 with an average of 500.49 Bqm^-2h^-1. As a result the mean is lower than the average value worldwide. The thoron surface exhalation rate and the radon mass exhalation rate were also shown to be significantly positively correlated. The results demonstrate the safety of using the soil from the research region as a building material.