scholarly journals Measurement Radon Gas Concentration in Selected Soil Samples of The of Al-Nada District in Najaf

2018 ◽  
Vol 7 (4.36) ◽  
pp. 678
Author(s):  
Shahad Fadel Kadim ◽  
Heiyam Najy Hady
Keyword(s):  
Background Radiation ◽  
Track Detector ◽  
Soil Samples ◽  
Nuclear Track Detector ◽  
Gas Concentration ◽  
Average Value ◽  
Naoh Solution ◽  
Long Term Measurement ◽  
Reporting Data

In this study fifty (50) of soil samples of AL-Nada district-Najaf Governorate –Iraq have been collected randomly and studied using  solid state nuclear track detectors (CR-39) to determined 226Ra through counting the number of radon tracks by using CR-39 plastic nuclear track detector ,a long- term measurement technique has been considered using special tube of mean (2.5cm) diameter .The detector was placed at (5cm) height and irradiated for 90 days. The chemical etching performed by using (NaOH) solution of 6.25 normality at etching temperature (70C°)for etching period of (7 hrs  ).Concentration of radon 222Rn has ranged from (171.237±0.0062) Bq/m3 to (31.982±0.0027) Bq/m3with  average value  (99.222±0.2476) Bq/m3 while the specific activityof radon has been ranged from (0.471±1.794) Bq/kg to (0.090±7.682) Bq/kg with average value (0.277 1.320)Bq/kgThe results were found to be comparable or lower than similar global reporting data. Accordingly, this area of soil can be considered to have normal levels of natural background radiation.                           

scholarly journals Measurement of radon gas concentration in water and soil samples in AL-Najaf governorate by using nuclear track detector (CR-39)

2015 ◽  
Vol 12 (3) ◽  
pp. 603-610
Author(s):  
Baghdad Science Journal
Keyword(s):  
Radon Concentration ◽  
Tap Water ◽  
Track Detector ◽  
Soil Samples ◽  
Exhalation Rate ◽  
Nuclear Track Detector ◽  
Gas Concentration ◽  
Average Value ◽  
Radon Gas

The radon gas concentration in environmental samples soil and water of selected regions in Al-Najaf governorate was measured by using alpha-emitters registrations which are emitted form radon gas in (CR-39) nuclear track detector. The first part is concerned with the determination of radon gas concentration in soil samples, results of measurements indicate that the highest average radon concentration in soil samples was found in (Al-Moalmen) region which was (100.0±7.0 Bq/m3), while the lowest average radon concentration was found in (Al-Askary) region which was (38.5±4.7 Bq/m3), with an average value of (64.23±14.9 Bq/m3) ,the results show that the radon gas concentrations in soil is below the allowed limit from (ICRP) agency which is (200 Bq/m3), while the radon exhalation rate (RER) ranged from (35.23-91.52 µBq/m2h), and average value which was (58.77±13.6 µBq/m2h). The second part is concerned with the determination of radon gas concentration in samples of tap water obtained from networks in dwellings in Al-Najaf governorate, the results indicate that the highest average radon concentration in water samples was found in (Meassan) region which was (0.59±0.08 Bq/L), while the lowest average radon concentration was found in (Al-Jamhorah) region which was (0.16±0.04 Bq/L), with an average value of (0.36±0.1 Bq/L), the present results show that the radon gas concentrations in tap water is below the allowed limit from (ICRP) agency which is (0.5994 Bq/L), while the radon exhalation rate (RER) ranged from (2.15-0.58 ?Sv/y), and average value which was (1.28±0.31 ?Sv/y).

scholarly journals Measurement of Indoor Radon Gas Concentration in same Region of Baghdad Governorate Using CR-39 Nuclear Track Detector

2017 ◽  
Vol 14 (4) ◽  
pp. 688-691 ◽  
Author(s):  
Baghdad Science Journal
Keyword(s):  
Effective Dose ◽  
Radon Concentration ◽  
Annual Effective Dose ◽  
Indoor Radon ◽  
Track Detector ◽  
Nuclear Track Detector ◽  
Gas Concentration ◽  
Alpha Emitters ◽  
Average Value ◽  
Radon Gas

In this research the activity of radon gas in air in Baghad governorate,Iraq, using “alpha-emitters track registration (CR-39) track detector were measured. This measurement was done for selected areas from Baghdad Governorate, The results obtained shows that the highest average concentrations for Rn-222 is (179.077 Bq/m^3) which was recorded within Al-Shaaib city and less average concentrations was (15.79 Bq/m^3) in the nearby residential area of Baghdad International Airport and the overall average concentrations is (86.508 Bq/m^3) for these regions. Then the radon concentration was measured annual effective dose calculated from radon concentration and found in range from 0.4031 mSv/y to 4.5179 mSv /y with an average value of 2.1824 mSv/y. The annual effective dose of radon was within the allowed international limits.

scholarly journals Determination of Uranium Contents in Soil Samples in AL-Hamdaniya Region Using Solid State Nuclear Track Detector CR-39

2019 ◽  
Vol 30 (1) ◽  
pp. 199 ◽  
Author(s):  
Malik Hussain Kheder ◽  
Hanaa Nafee Azeez ◽  
Muna Yohana Slewa ◽  
Thoalfiqar Ali Zaker
Keyword(s):  
Uranium Concentration ◽  
Mean Value ◽  
Track Detector ◽  
Soil Samples ◽  
Secular Equilibrium ◽  
Nuclear Track Detector ◽  
Radon Activity ◽  
World Average ◽  
Average Value ◽  
Can Technique

Uranium is a common radioactive element in Earth’s crust (soil, rock), so it is important there quantity to be under control. The concentration of uranium in soil varies widely, Depending on the geological location, its concentration in the surface soil vary from 0.1 mg.Kg-1 (ppm) to 20 mg.Kg-1 (ppm) with a world average of 2.8 ppm and the allowed limit that equals 11.7 ppm. The uranium concentration, radon activity, radon concentration, in twenty soil samples collected from AL-Hamdaniya region (East of Mosul city) were measured using the sealed-can technique based on the CR-39 SSNTDs. The estimated values for the uranium activity which equal to radon activity at secular equilibrium were found vary between (581.11-1453.5) mBq with mean value 905.89 mBq, the uranium concentration are between (0.313-0.784) ppm with mean value of 0.488 ppm. All values of the samples under the test are below of allowed limit and world average value.

scholarly journals Assessment of Radon Concentrations in the Soil of South Baghdad Suburbs

2018 ◽  
Vol 31 (2) ◽  
pp. 60
Author(s):  
Sahar Ahmed Amin ◽  
Mukdad Abd Al-Wahaab Al-Khateeb ◽  
Talib Abd Al Shammari
Keyword(s):  
Background Radiation ◽  
Track Detector ◽  
Soil Samples ◽  
Exhalation Rate ◽  
Nuclear Track Detector ◽  
Radon Level ◽  
Surface Samples ◽  
Can Technique ◽  
River Site ◽  
Radon Concentrations

Measurements of radon gas concentrations were carried out for 12 soil samples at 3 sampling depths (surface, 5 cm and 10 cm) collected from (4) locations in south Baghdad suburbs (Bu'aitha) using solid state nuclear track detector CR-39 and sealed can technique. Radon concentrations for surface samples were ranged from 402.2 to 1538.4 Bq.m-3 with an average 994.4 Bq.m-3. Whereas, radon concentration was ranged from 813.1to 2050.4 Bq.m-3 and from 1309.8 to 4626. 1Bq.m-3 with an average values of 1359.8 Bq.m-3 and 2338.3 Bq.m-3 for 5 cm and 10 cm depths respectively. Maximum radon level was found at the location near to the river (site S4) while the minimum radon level was found at residential area (site S2). Radium contents were ranged from 0.42 to 1.62 Bq.kg-1, from 0.85 to 2.15 Bq.kg-1 and from 1.38 to 4.86 Bq.kg-1 with average values of 1.04, 1.43 and 2.46 Bq.kg-1 for surface, 5 cm and 10 cm depths respectively. Radon exhalation rates as a function of area and mass were also obtained. Surface exhalation rate ranged from 0.05 to 0.18 Bq.m-2.h-1, from 0.09 to 0.24 Bq.m-2.h-1 and from 0.15 to 0.53 Bq.m-2.h-1 with average values 0.11, 0.16 and 0.27 Bq.m-2.h-1 for surface, 5 cm and 10 cm depths respectively. Mass exhalation rate ranged from 0.02 to 0.06 Bq.kg-1.h, from 0.03 to 0.08 Bq.kg-1.h and from 0.05 to 0.18 Bq.kg-1.h with average values 0.04, 0.05 and 0.09 Bq.kg-1.h for surface, 5 cm and 10 cm depths respectively. The results obtained from this study indicate that the region background radiation levels are within the natural limits.  

scholarly journals Measurement of Soil-Gas Radon in Some Areasof Iraq Using Nuclear Track Detector CR-39

2015 ◽  
Vol 53 ◽  
pp. 90-94
Author(s):  
Khalid Haneen Abass ◽  
Baidaa Y. Mohammed ◽  
Azhar N. Rehem ◽  
Dalia J. Oleiwi
Keyword(s):  
Soil Sample ◽  
General Public ◽  
Track Detector ◽  
Soil Samples ◽  
Soil Gas ◽  
Nuclear Track Detector ◽  
Gas Concentration ◽  
Alpha Emitters ◽  
Radon Gas ◽  
Soil Gas Radon

The health hazards of the radioactive gas radon on general public are well known. In order to understand the level and distribution of 222Rn concentrations in soil-gas in Babil province, we have measured the radon gas concentration in soil samples of different areas in Babylon (Al-werdeiaa, Al-seiahy, Al-Thewrae, Al-muhendisen, Al-keliss, Nadeer) by using alpha-emitters registrations which are emitted from radon gas in nuclear track detector (CR-39). The obtained results have shown that the highest average radon gas concentration in soil sample was found in Al-muhendisen and Al-werdeiaa samples, which was (32.75 Bq/m3), while the lowest average radon gas concentration in soil samples was found in Nadeer sample, which was (25.85 Bq/m3). The present results show that the radon gas concentration in all soil samples is below the allowed limit from (International Commission of Radiation Protection) (ICRP) agency.

Measuring the Pollution Level with Uranium and Radon in the Soil of Some Areas Inside Baghdad University Campus-AL-Jadiriyah

2021 ◽  
Vol 19 (7) ◽  
pp. 72-77
Author(s):  
Farah Faris Kaddoori ◽  
Basim Khalaf Rejah ◽  
Wijdan Thamer Fzaa
Keyword(s):  
Effective Dose ◽  
Dose Rate ◽  
Track Detector ◽  
Soil Samples ◽  
Pollution Level ◽  
University Campus ◽  
Nuclear Track Detector ◽  
Average Value ◽  
Effective Dose Rate ◽  
Radon Concentrations

In present study, the technique was used, including nuclear track detector type (CR-39), for appreciative concentrations uranium and radon in soil samples from Baghdad University Campus-AL-Jadiriyah utilizing a prolonged -term with a solid-state nuclear path sensor, a technique for charged particles has been developed., the radon concentrations, effective dose rate and uranium concentrations have measured in soil samples. Eight various venues from soil Baghdad University Campus have appointed. The results indicated variant values about uranium and radon concentrations, the average value for radon gas, effective dose rate and uranium concentrations was found to be 281.59 Bq/cm3, 7.09 mSv/y and 0.01 Bq/mm-2 respectively. All results appeared that concentrations for radon and uranium in soil are infra the permitted limit from (ICRP) agency which are 1100 Bq/m3 and 11.7 (mg. Kg- 1) ppm respectively. All results were comparison with the domestic and worldwide results.

scholarly journals Analysis of radon concentration and gamma dose rate in residential houses of Ambon and Seram Islands, Maluku

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
WAHYUDI WAHYUDI ◽  
ILMA DWI WINARNI ◽  
MUJI WIYONO ◽  
KUSDIANA KUSDIANA
Keyword(s):  
Radon Concentration ◽  
Radiation Safety ◽  
Track Detector ◽  
Average Concentration ◽  
Nuclear Track Detector ◽  
Environmental Radiation ◽  
Average Value ◽  
Naoh Solution ◽  
Radon Concentrations

Radon concentration analysis in the residential houses on Ambon and Seram Island - Maluku through the passive method using the CR-39 nuclear track detector has been studied. The CR-39 nuclear track detector was installed inside the residential houses for 3 months. After finishing the exposure, the detector was taken and etched using 6.25 N NaOH solution. The nuclear track of radon in the CR-39 was read by a microscope with 400 times magnification. From the results of reading the track, determination of radon concentration in the houses was calculated. The results of the analysis showed that radon concentrations in the residential houses of Ambon and Seram Islands, Maluku at the low level were in the range of 2.56 ± 0.18 Bq/m3 to 59.65 ± 4.22Bq/m3 with an average value of 28.42 ± 1.98 Bq/m3. The average concentration of radon is still below the average radon concentration in the world of 50 Bq/m3. The value of dose received by the population due to exposure of radon and gamma radiation in the range of 0.90-1.44 mSv/year. There is a positive correlation between radon concentration value and total radiation doses received by the population for a year. This data can be used in the study of radiation safety for the Ministry of Health and as a contribution to Indonesia in the international community about monitoring environmental radiation from radon concentrations in residential houses

scholarly journals Measuring Uranium Concentrations in Soil Samples of Midland Refineries Company - Doura - Baghdad – Iraq

2019 ◽  
Vol 16 (3) ◽  
pp. 0626
Author(s):  
Mahdi Et al.
Keyword(s):  
Solid State ◽  
Uranium Concentration ◽  
Track Detector ◽  
Soil Samples ◽  
Nuclear Track Detector ◽  
Average Value ◽  
Detector Type

      In this study, the CR-39 detector technique was used, to estimate the uranium concentration from the soil in midland refineries Company (Doura refine (, Baghdad, Iraq. Uranium concentrations in soil samples have been measured using solid state nuclear track detector type CR-39.  Nine soil samples were collected from different areas within the Doura refinery and other soil samples were collected form Abu Tayara Street and ALshortaa District outside the refinery for comparison. The results showed variable values for uranium concentrations. The average value of uranium concentration was found to be 0.37 ppm in doura refinery. For areas outside the refinery, the concentration of uranium was 0.008 ppm. These results were less than the global limit.

Radiological Parameters Due to Radon-222 in Soil Samples at Baghdad Governorate (Karakh), Iraq

2017 ◽  
Vol 60 (2) ◽  
pp. 72-78
Author(s):  
Ali Abid Abojassim ◽  
Ahmed Rahim Shltake ◽  
Laith Ahmed Najam
Keyword(s):  
Radon Concentration ◽  
Annual Effective Dose ◽  
Track Detector ◽  
Soil Samples ◽  
Reference Level ◽  
Nuclear Track Detector ◽  
Radium Content ◽  
Can Technique ◽  
Level 3 ◽  
Radon Concentrations

Measurements of radon concentration, effective radium content, potential alpha energyconcentration (PAEC) and annual effective dose (AED) were estimated for soil samples in fifteen locationsof the Baghdad governorate (Karakh) in the central part of Iraq. In this survey we used the can technique,containing nuclear track detector (CR-39). The obtained values of radon concentration measurements weregenerally low, ranging from 38.12±13.46 to 94.51±16.5 Bq/m3, with an average 66.07 Bq/m3, while theeffective radium content varied from 5.80±0.21 Bq/kg to 14.39±0.33 Bq/kg with an average 10.09 Bq/kg. The average of the PAEC and AED were assessed to be 7.14 mWL 1.66 mSv/y, respectively. The resultsof the present study shows that the radium content are lower than the allowed limit reported by Organizationfor Economic Cooperation and Development (OECD) that is equal to 370 Bq/kg. In general, it is seen thatthe AED limit was within the recommended reference level (3 mSv/y to 10 mSv/y) of the World HealthOrganization. Also, it is found that there is a strong correlation (R2= 1) between radon concentrations andeffective radium content. The results obtained from this study indicate that the locations of Karakh hasbackground radioactivity(radon concentrations) levels within the natural limits.

scholarly journals Experimental Investigation to Determine the Concentration of Radon in Cosmetics Using a Nuclear Track Detector (CR-39)

2021 ◽  
Vol 20 (3) ◽  
pp. 173-177
Author(s):  
Osama Mohammed ◽  
Ahmed R. Mathloo ◽  
Alaa A. Shanef
Keyword(s):  
International Organizations ◽  
Track Detector ◽  
Local Market ◽  
Cosmetic Products ◽  
Nuclear Track Detector ◽  
Gas Concentration ◽  
Surface Evaporation ◽  
Radon Gas ◽  
Gas Measurements ◽  
Different Origins

The nuclear track detector CR-39 is used in the detection of radon gas concentration in selected samples of cosmetics in the local market. Products of wide use are selected and employed in the current study. Six types of cosmetic products of different origins are tested by taking equivalent quantities of these products and putting them in plastic boxes. The detector is left with the samples for a period of 50 days. In addition to measuring the rate of surface evaporation of radon gas, measurements of the annual equivalent dose of radon gas are also carried out. The results show that the highest concentration of radon gas is in Charcoal Facial SCRuB (American origin) and it is equal to 0.0795 Bq/m3, whereas the lowest one in "bb" cream basis (5 in 1) is equal to 0.0355 Bq/m3. Based on specific international organizations and agencies, the concentration of radon in the samples under consideration is within the acceptable limits.

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