Assessment of radon, thoron, and their progeny concentrations in the dwellings of Shivalik hills of Jammu and Kashmir, India

Age and sex dependent inhalation doses for different human organs from indoor thoron and radon progeny concentration

“…Figure 7 shows that the effective dose due to thoron progeny concentration was higher than the effective dose due to radon progeny concentration. The values of annual effective dose acquired for present work found in the safe range from 3000 to 10,000 µSvy -1 (3E0-3 to 1E-02 Svy -1 ) commended by ICRP (2008) and also lower than the commended reference level of 10,000 µ Svy -1 (1E0-2 Svy -1 ) suggested by WHO ( 2009) & Kaur et al (2020).…”

“…Reasi district lies between latitude 33°05'56.58" N and longitude 74°42'26.88" E, at a distance of 64 km from Jammu and is bounded by Tehsil Gool-Gulabgarh in the north, Tehsil Sunderbani and Kalakote of District Rajouri in the west, Udhampur District in the east, Tehsils Jammu and Akhnoor of District Jammu at the south (Figure 1). Geopolitically, the district is underlained by rock formations which range in age from Pre-Cambrian of Sirban lime stone to Quaternary period of Murree Group (Kaur et al, 2020). The Sirban Lime stone is also known as great lime stone or Reasi lime stone.…”

“…The comprehensive strategy for the chemical treatment of the retrieved sensors has been already described by Kaur et al, 2017a, b to convert obtained counts of radon/thoron progeny into concentration. The passive total (fine + coarse) 222 Rn and 220 Rn progeny concentration EEC(x) and coarse progeny content EEC(y) were assessed using deposition-based progeny sensors (DRPS/DTPS) (Kaur et al, 2020) and wiremesh-capped deposition-based progeny sensors (WM-DRPS/DTPS) (Kaur et al, 2020) developed and calibrated by Mishra et al, (2014). Both contain passive detectors (LR-115) framed with shield of proper width.…”

“…elsewhere (Mishra et al, 2009;Kaur et al, 2020). The fine progeny content EEC(z) of 222 Rn and 220 Rn has been evaluated by subtracting the concentration of coarse progeny concentrations EEC(y) from total progeny concentrations EEC(x) employing expressions as stated by Kaur et al, 2020.…”

“…elsewhere (Mishra et al, 2009;Kaur et al, 2020). The fine progeny content EEC(z) of 222 Rn and 220 Rn has been evaluated by subtracting the concentration of coarse progeny concentrations EEC(y) from total progeny concentrations EEC(x) employing expressions as stated by Kaur et al, 2020. The fine fraction (ff) of 222 Rn and 220 Rn has been evaluated by dividing the coarse progeny with total progeny for both radon and thoron (Kaur et al, 2017b;Knutson, 1988).…”