scholarly journals Radioactivity of Some Soils in the University of Tikrit, Iraq, college of Education for Girls using Solid-State Nuclear Track Detector type CR-39

2019 ◽  
pp. 2015-2021
Author(s):  
Sarwa Abd Alqader Mohammed Saleh
Keyword(s):  
College Of Education ◽  
Track Detector ◽  
Soil Samples ◽  
Nuclear Track Detector ◽  
Radiation Background ◽  
Geological Factors ◽  
The University ◽  
Nuclear Effects ◽  
Impact Detector ◽  
Detector Type

     In this research radon concentrations in soil samples of some sites of the College of Education for Women, University of Tikrit, were measured using CR-39 nuclear impact detector. Soil samples were  prepared according to classical protocols whereby they were irradiated for a period of 65 days in propagation chambers chemically treated and subjected to optical microscopy to calculate nuclear effects. The results show differences in the concentrations of radon gas in the samples collected from different sites  ranging between a lowest value in the location of the department of English and a highest value of  in the location of the cafeteria of College compared to the radiation background of due to the geological factors that depend on the type and specifications of the soil, the amount of gases emitted from the soil, the amount of the emergence of radon from the granules of the soil and its spread through the pores of the soil to the outside.

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 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 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 Measurement of radon and uranium concentration in soil samples from Babylon cement plant using nuclear track detector CR-39

2019 ◽  
Vol 12 (24) ◽  
pp. 68-74
Author(s):  
Israa Kamil Ahmed
Keyword(s):  
Neutron Source ◽  
Uranium Concentration ◽  
Track Detector ◽  
Soil Samples ◽  
Cement Plant ◽  
Thermal Neutrons ◽  
Standard Samples ◽  
Nuclear Track Detector ◽  
Fission Fragments ◽  
Radon Concentrations

In this study, concentrations of radon and uranium were measured for twenty six samples of soil. The radon concentrations in soil samples measured by registrant alpha-emitting radon (222Rn) by using CR-39 track detector. The uranium concentrations in soil samples measured by using registrar fission fragments tracks in CR-39 track detector that caused by the bombardment of U with thermal neutrons from 241 Am-Be neutron source that has flux of 5 ×103n cm-2 s-1.The concentrations values were calculated by a comparison with standard samples The results show that the radon concentrations are between (91.931-30.645Bq/m3).The results show that also the uranium concentrations are in soil samples under 0.051-0.0079ppm.

Estimating Radon Excess Lung Cancer at the Babylon Cement Plant in Iraq

2021 ◽  
Author(s):  
Israa Kamil Ahmed ◽  
Hyam Nazmy Khalaf ◽  
Mostafa Yuness Mostafa
Keyword(s):  
Lung Cancer ◽  
Effective Dose ◽  
Annual Effective Dose ◽  
Uranium Content ◽  
Mean Value ◽  
Track Detector ◽  
Soil Samples ◽  
Cement Plant ◽  
Nuclear Track Detector ◽  
Radon Concentrations

Abstract In the present work, Radon Excess Lung Cancer (ELC) is estimated for fourteen soil samples from Babylon cement plant in Iraq. CR-39 nuclear track detector is utilized to measure the uranium content and radon 222Rn concentrations in soil samples. Uranium concentrations in soil samples varied from 0.008 to 0.05 ppm with mean value 0.025±0.013. Radon concentrations is founded between 31 and 92 Bq/m3 with mean value 56.72 and standard division, SD, 17.29. Radon Excess Lung Cancer per Million Persons per Year is determined with mean value 863 and standard division, SD, 261.65 (463.81-12082.8). Also, Annual effective dose, E (msv y-1), has a range from 0.77 to 2.32 with mean 1.44 and SD 0.44.

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 Uranium concentrations in Soil of Salahdin Governorate Using CR-39 Nuclear Track Detector

2014 ◽  
Vol 11 (2) ◽  
pp. 531-534
Author(s):  
Baghdad Science Journal
Keyword(s):  
Nuclear Reaction ◽  
Neutron Source ◽  
Uranium Concentration ◽  
Nuclear Fission ◽  
Track Detector ◽  
Soil Samples ◽  
Thermal Neutrons ◽  
Standard Samples ◽  
Nuclear Track Detector ◽  
Fission Fragments

Uranium concentrations in soil were determined for ten locations in Salahdin governorate using CR-39 track detector, fission fragments track technique was used, the nuclear reaction of nuclear fission fragments obtained by the bombardment of 235U with thermal neutrons from (Am-Be) neutron source with flux (5000n.cm-2.s-1), the concentration values were calculated by a comparison with standard samples. The results of the measurements show that the uranium concentration in soil samples various from 0.42±0.018ppm in Beji province to 0.2±0.014 ppm in Tooz province with an average (0.31±0.08ppm), the values of uranium concentration in all samples are within the permissible limits universally.

scholarly journals Radon-thoron measurements in air and soil from some districts of northern part of India

2015 ◽  
Vol 30 (4) ◽  
pp. 294-300 ◽  
Author(s):  
Nisha Mann ◽  
Amit Kumar ◽  
Sushil Kumar ◽  
Rishi Chauhan
Keyword(s):  
Solid State ◽  
Radon Concentration ◽  
Indoor Environment ◽  
Indoor Radon ◽  
Correlation Study ◽  
Track Detector ◽  
Soil Samples ◽  
Indoor Radon Concentration ◽  
Nuclear Track Detector ◽  
Environmental Activity

Radon, thoron and their progenies in the indoor environment are considered as one of the health hazards. The alpha emitting nature of these gases made it possible to detect in indoor environment with the help of nuclear track detector techniques. The soil is the main source of indoor radon as it contains varying amounts of uranium and thorium. Thus the exhalation of radon from soil and its environmental activity needs to be studied. In the present study, the measurement of the indoor radon-thoron from the indoor environment and exhalation from soil are carried out using solid state nuclear track detector technique from Sirsa and Bhiwani districts of northern part of India. The canister technique was used to measure the radon ex- halation rate from the soil samples collected from the study area and pinhole based radon-thoron dosimeters were used to measure indoor radon and thoron concentration. The results show that indoor radon concentration varied from 9 to 28 Bq/m3, with an average of 18.9 Bq/m3 and from 5 to 21 Bq/m3, with an average of 13.8 Bq/m3, for Bhiwani and Sirsa, respectively. Similarly, thoron concentration varied from 14 to 48 Bq/m3, with average of 28.9 Bq/m3 and 27 to 54 Bq/m3, with the average of 39.0 Bq/m3, for Bhiwani and Sirsa, respectively. The mass exhalation rates from soil samples were also measured, to estimate their contribution to indoor radon. A correlation study was carried out between soil exhalation rates and indoor radon concentration.

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.

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