Measurement of Radon Concentration and the Effective Dose Rate in the Soil of the City of Karbala, Iraq

2016 ◽  
Vol 1 (1) ◽  
pp. 17-23 ◽  
Author(s):  
Abdalsattar Kareem Hashim ◽  
Elham Jasim Mohammed
Keyword(s):  
Effective Dose ◽  
Dose Rate ◽  
Radon Concentration ◽  
Effective Dose Rate ◽  
The City

Assessment of radioactivity from selected soil samples from Halfa Aljadida area, Sudan

2019 ◽  
Vol 107 (6) ◽  
pp. 489-502
Author(s):  
Abd-Elmoniem A. Elzain ◽  
Hajo Idriss ◽  
Yousif Sh. Mohammed ◽  
Khidir Shaib Mohamed ◽  
Mohamed Abd Elwahab Mohamed Ali ◽  
...  
Keyword(s):  
Effective Dose ◽  
Dose Rate ◽  
Linear Correlation ◽  
Radon Concentration ◽  
Soil Samples ◽  
Average Value ◽  
Soil Gas Radon ◽  
Effective Dose Rate ◽  
Alpha Index ◽  
Concentration Surface

Abstract In this research, the results of radon concentration, surface and mass exhalation rates, radium concentration, effective dose rate and the alpha index have been investigated in a number of 198 soil samples that have been collected from various residential locations of Halfa Aljadida area, Sudan. The can technique, containing CR-39 have been used. From our results, the average value of soil gas radon concentration was found to be 1.96±0.22 kBq·m−3. The average values of surface and mass exhalation rates were 1.73±0.19 Bq·m−2·h−1 and 34.79±3.87 mBq·kg−1·h−1, respectively. The radium concentration average value was 8.06±0.90 Bq·kg−1. While the average value of the effective dose rate was recorded to be 54.69±6.11 mSv·y−1. The average value of alpha index of studied samples was (4.03±0.45)×10−2. From the study, a good positive and linear correlation between radium concentration, surface and mass exhalation rates of soil samples were present. In addition to that, a positive and linear correlation between radium and radon concentrations was found. Finally, a comparison between the results and other findings was conducted and the results imply the fact that the area under consideration is safe as if the health hazard are mentioned.

Radon concentration and radon effective dose rate in dwellings of some villages in the district of Ajloun, Jordan

2012 ◽  
Vol 70 (8) ◽  
pp. 1579-1582 ◽  
Author(s):  
H.M. Al-Khateeb ◽  
A.A. Al-Qudah ◽  
F.Y. Alzoubi ◽  
M.K. Alqadi ◽  
K.M. Aljarrah
Keyword(s):  
Effective Dose ◽  
Dose Rate ◽  
Radon Concentration ◽  
Effective Dose Rate

scholarly journals A study of indoor radon levels and radon effective dose in dwellings of some cities of Gezira State in Sudan

2014 ◽  
Vol 29 (4) ◽  
pp. 307-312 ◽  
Author(s):  
Abd-Elmoniem Elzain
Keyword(s):  
Lung Cancer ◽  
Effective Dose ◽  
Dose Rate ◽  
Radon Concentration ◽  
Annual Effective Dose ◽  
Indoor Radon ◽  
Indoor Radon Concentration ◽  
Energy Agency ◽  
Effective Dose Rate ◽  
Annual Effective Dose Rate

Exposure to natural sources of radiation, especially 222Rn and its short-lived daughter products has become an important issue throughout the world because sustained exposure of humans to indoor radon may cause lung cancer. The indoor radon concentration level and radon effective dose rate were carried out in the dwellings of Medani, El Hosh, Elmanagil, Haj Abd Allah, and Wad Almahi cities, Gezira State - Central Sudan, in 393 measurements, using passive integrated solid-state nuclear track devices containing allyl diglycol carbonate plastic detectors. The radon concentration in the corresponding dwellings was found to vary from (57 ? 8) Bq/m3 in Medani to 41 ? 9 Bq/m3 in Wad Almahi, with an average of 49 ? 10 Bq/m3. Assuming an indoor occupancy factor of 0.8 and 0.4 for the equilibrium factor of radon indoors, we found that the annual effective dose rate from 222Rn in the studied dwellings ranges from 1.05 to 1.43 mSv per year and the relative lung cancer risk for radon exposure was 1.044%. In this research, we also correlated the relationship of radon concentration and building age. From our study, it is clear that the annual effective dose rate is larger than the ?normal? background level as quoted by UNSCEAR, lower than the recommended action level of ICRP, and less than the maximum permissible dose defined by the International Atomic Energy Agency.

Indoor Radon and Thoron Concentration and the Associated Effective Dose Rate Determination in Dwellings of Suq Alshouk, Thiqar (Iraq)

2021 ◽  
Vol 19 (12) ◽  
pp. 06-10
Author(s):  
Hussam Najem Abood ◽  
Ahmed Abbas Mohamed
Keyword(s):  
Effective Dose ◽  
Dose Rate ◽  
Annual Effective Dose ◽  
Indoor Radon ◽  
Type Ii ◽  
Average Value ◽  
Effective Dose Rate

Indoor radon/thoron concentration has been determined in some dwellings of Suq Alshouk district in Thiqar Governorate southern of Iraq, using LR-115 type II and CR-39 (SSNTDs). In this work the indoor radon/thoron concentration varies from (8-73) Bq m-3 for radon with an average 35±2Bq m-3, and ranges (1- 47) Bq m-3 for thoron with an average16±2Bq m-3. The average annual effective dose due to radon and thoron varies from 0.43-3.38m Sv y-1 with average value 1.43±0.11 mSv y-1.

scholarly journals Upgrade of GLE database: Assessment of effective dose rate at flight altitude

2018 ◽  
Vol 62 (2) ◽  
pp. 398-407 ◽  
Author(s):  
S. Tuohino ◽  
A. Ibragimov ◽  
I. Usoskin ◽  
A. Mishev
Keyword(s):  
Effective Dose ◽  
Dose Rate ◽  
Flight Altitude ◽  
Effective Dose Rate

scholarly journals Technical and radiological characterisation of fly ash and bottom ash from thermal power plant

2021 ◽  
Author(s):  
Emilija Fidanchevski ◽  
Biljana Angjusheva ◽  
Vojo Jovanov ◽  
Pece Murtanovski ◽  
Ljubica Vladiceska ◽  
...  
Keyword(s):  
Fly Ash ◽  
Effective Dose ◽  
Dose Rate ◽  
Power Plants ◽  
Annual Effective Dose ◽  
Health Effect ◽  
Thermal Power ◽  
Bottom Ash ◽  
Effective Dose Rate ◽  
Annual Effective Dose Rate

AbstractHuge quantities of fly ash and bottom ash are generated from thermal power plants and it presents great concern for country, mainly due to the environmental effects. In this study, fly ashes and bottom ash were characterized from technical and radiological aspects. Health effect due to the activity of radionuclides 226Ra, 232Th and 40K was estimated via radium equivalent activity (Raeq), external hazards index (Hex), the external absorbed dose rate (D) and annual effective dose rate (EDR). The specific surface area (40.25 m2 g−1), particle density (1.88 g cm−3) and LOI (23.49%) were typical for bottom ash. Siliceous fly ash contained 32% reactive silica. The annual effective dose rate for all ashes is ≤ 0.2 mSv y−1. Both, fly ash and bottom ash present potential secondary raw materials to be used for building purposes as result of their technological and radiological assessment.

scholarly journals Neutron monitor count rate increase as a proxy for dose rate assessment at aviation altitudes during GLEs

2018 ◽  
Vol 8 ◽  
pp. A46 ◽  
Author(s):  
Alexander Mishev ◽  
Sasu Tuohino ◽  
Ilya Usoskin
Keyword(s):  
Effective Dose ◽  
Dose Rate ◽  
Count Rate ◽  
Rate Increase ◽  
Ground Level ◽  
Flight Altitude ◽  
Ground Level Enhancement ◽  
Solar Particle Events ◽  
Effective Dose Rate ◽  
Ground Level Enhancement Events

Radiation exposure due to cosmic rays, specifically at cruising aviation altitudes, is an important topic in the field of space weather. While the effect of galactic cosmic rays can be easily assessed on the basis of recent models, estimate of the dose rate during strong solar particle events is rather complicated and time consuming. Here we compute the maximum effective dose rates at a typical commercial flight altitude of 35 kft (≈11 000 m above sea level) during ground level enhancement events, where the necessary information, namely derived energy/rigidity spectra of solar energetic particles, is available. The computations are carried out using different reconstructions of the solar proton spectra, available in bibliographic sources, leading to multiple results for some events. The computations were performed employing a recent model for effective dose and/or ambient dose equivalent due to cosmic ray particles. A conservative approach for the computation was assumed. A highly significant correlation between the maximum effective dose rate and peak NM count rate increase during ground level enhancement events is derived. Hence, we propose to use the peak NM count rate increase as a proxy in order to assess the peak effective dose rate at flight altitude during strong solar particle events using the real time records of the worldwide global neutron monitor network.

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