scholarly journals Assessment of Indoor Radon Concentrations in Dwellings for Baghdad Governorate by Using RAD-7 Detector

Detection ◽  
2016 ◽  
Vol 04 (02) ◽  
pp. 40-44
Author(s):  
Mahmood S. Karim ◽  
Hasan H. Daroysh ◽  
Ali N. Mohammed
Keyword(s):  
Indoor Radon ◽  
Radon Concentrations

Measurement of indoor radon concentrations in Kuwait

1987 ◽  
Vol 13 (4-5) ◽  
pp. 323-330 ◽  
Author(s):  
Adel A. Mustafa ◽  
C.M. Vasisht ◽  
J. Sabol
Keyword(s):  
Indoor Radon ◽  
Radon Concentrations

scholarly journals Radiological Assessment of Indoor Radon and Thoron Concentrations and Indoor Radon Map of Dwellings in Mashhad, Iran

2020 ◽  
Vol 18 (1) ◽  
pp. 141
Author(s):  
Mohammademad Adelikhah ◽  
Amin Shahrokhi ◽  
Morteza Imani ◽  
Stanislaw Chalupnik ◽  
Tibor Kovács
Keyword(s):  
Limit Of Detection ◽  
Indoor Radon ◽  
Absolute Error ◽  
Soil Gas ◽  
Indoor Radon Concentration ◽  
Soil Gas Radon ◽  
Distance Weighting ◽  
The City ◽  
Monitoring Devices ◽  
Radon Concentrations

A comprehensive study was carried out to measure indoor radon/thoron concentrations in 78 dwellings and soil-gas radon in the city of Mashhad, Iran during two seasons, using two common radon monitoring devices (NRPB and RADUET). In the winter, indoor radon concentrations measured between 75 ± 11 to 376 ± 24 Bq·m−3 (mean: 150 ± 19 Bq m−3), whereas indoor thoron concentrations ranged from below the Lower Limit of Detection (LLD) to 166 ± 10 Bq·m−3 (mean: 66 ± 8 Bq m−3), while radon and thoron concentrations in summer fell between 50 ± 11 and 305 ± 24 Bq·m−3 (mean 115 ± 18 Bq m−3) and from below the LLD to 122 ± 10 Bq m−3 (mean 48 ± 6 Bq·m−3), respectively. The annual average effective dose was estimated to be 3.7 ± 0.5 mSv yr−1. The soil-gas radon concentrations fell within the range from 1.07 ± 0.28 to 8.02 ± 0.65 kBq·m−3 (mean 3.07 ± 1.09 kBq·m−3). Finally, indoor radon maps were generated by ArcGIS software over a grid of 1 × 1 km2 using three different interpolation techniques. In grid cells where no data was observed, the arithmetic mean was used to predict a mean indoor radon concentration. Accordingly, inverse distance weighting (IDW) was proven to be more suitable for predicting mean indoor radon concentrations due to the lower mean absolute error (MAE) and root mean square error (RMSE). Meanwhile, the radiation health risk due to the residential exposure to radon and indoor gamma radiation exposure was also assessed.

scholarly journals THE RESULTS OF MEASURING AND MODELLING SOIL-INDOORS RADON TRANSPORTATION / RADONO PERNAŠOS IŠ DIRVOŽEMIO Į PATALPAS MATAVIMO IR MODELIAVIMO REZULTATAI

2013 ◽  
Vol 5 (4) ◽  
pp. 388-396 ◽  
Author(s):  
Erika Streckytė ◽  
Donatas Butkus
Keyword(s):  
Moisture Content ◽  
Indoor Radon ◽  
Ambient Air ◽  
Summer Season ◽  
Monitoring Device ◽  
Volumetric Activity ◽  
Indoor Temperature ◽  
Radon Gas ◽  
Radon Monitoring ◽  
Radon Concentrations

The article presents the entry of radon gas into premises and introduces the parameters accelerating and slowing this process. The paper determines the dependence of radon gas entering the premises on ambient temperature and humidity changes. It is noted that a growth in differences under ambient and indoor temperature increases indoor radon concentrations in the air due to an increase in the intensity of radon exhalation from soil. Also, an increase in the moisture content indoors decreases the volumetric activity of radon in the air. The simulated values of radon volumetric activity in ambient air were similar to those measured using radon monitoring device RTM2200. Radon concentration in the air of the first floor was higher than that in the second floor. Indoor radon concentrations were highest in the winter and lowest in summer season. Article in Lithuanian. Santrauka Nagrinėjama radono dujų patekimo į patalpas procesas, šį procesą spartinantys ir lėtinantys parametrai. Nustatoma radono dujų patekimo į patalpas priklausomybė nuo aplinkos temperatūros bei drėgnio kitimo. Pastebėta, kad, didėjant aplinkos ir patalpos temperatūrų skirtumui, didėja ir radono tūrinis aktyvumas patalpos ore (vasarą radono tūrinis aktyvumas siekė 45,0±3,0 Bq/m3, kai temperatūrų skirtumas buvo 3,1 °C, o rudenį – 62,0±5,0 Bq/m3, esant temperatūrų skirtumui 3,9 °C), didėja radono ekshaliacijos iš dirvožemio intensyvumas, o didėjant drėgmės kiekiui patalpose radono tūrinis aktyvumas ore mažėja. Sumodeliuotos radono tūrinio aktyvumo patalpos ore reikšmės buvo panašios kaip ir išmatuotos naudojant radono monitorių RTM2200. Pirmajame aukšte radono tūrinis aktyvumas ore buvo didesnis nei antrajame. Žiemos sezonu jo vertė buvo didžiausia (47,0±10,5 Bq/m3), o vasaros sezonu – mažiausia (15±1,8 Bq/m3).

scholarly journals Predictors of Indoor Radon Concentrations in Pennsylvania, 1989–2013

2015 ◽  
Vol 123 (11) ◽  
pp. 1130-1137 ◽  
Author(s):  
Joan A. Casey ◽  
Elizabeth L. Ogburn ◽  
Sara G. Rasmussen ◽  
Jennifer K. Irving ◽  
Jonathan Pollak ◽  
...  
Keyword(s):  
Indoor Radon ◽  
Radon Concentrations

scholarly journals The European map of indoor radon concentrations: status and questions of quality assurance

Kerntechnik ◽  
2012 ◽  
Vol 77 (3) ◽  
pp. 176-183 ◽  
Author(s):  
P. Bossew ◽  
V. Gruber ◽  
T. Tollefsen ◽  
M. De Cort
Keyword(s):  
Quality Assurance ◽  
Indoor Radon ◽  
Radon Concentrations

scholarly journals Radon measurements with CR-39 track detectors at specific locations in Turkey

2004 ◽  
Vol 19 (1) ◽  
pp. 46-49 ◽  
Author(s):  
Asiye Ulug ◽  
Melek Karabulut ◽  
Nilgün Celebi
Keyword(s):  
Radon Concentration ◽  
Indoor Radon ◽  
Active Faults ◽  
Indoor Radon Concentration ◽  
Arithmetic Means ◽  
Radon Measurements ◽  
New Buildings ◽  
Main Factor ◽  
Ventilation Conditions ◽  
Radon Concentrations

Indoor radon concentration levels at three sites in Turkey were measured using CR-39 solid state nuclear track detectors. The annual mean of radon concentration was estimated on the basis of four quarter measurements at specific locations in Turkey. The measuring sites are on the active faults. The results of radon measurements are based on 280 measurements in doors. The annual arithmetic means of radon concentrations at three sites (Isparta Egirdir, and Yalvac) were found to be 164 Bqm?3, 124 Bqm?3, and 112 Bqm?3 respectively, ranging from 78 Bqm?3 to 279 Bqm?3. The in door radon concentrations were investigated with respect to the ventilation conditions and the age of buildings. The ventilation conditions were determined to be the main factor affecting the in door radon concentrations. The in door radon concentrations in the new buildings were higher than ones found in the old buildings.

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