Assessment of naturally occurring radioactive material (NORM) in the oil drilling mud of Az Zubair oil field, Basra, Iraq

Amin, Sahar A.

doi:10.1007/s12665-016-5564-y

Cited by 8 publications

(4 citation statements)

References 9 publications

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“…Thereafter, the detectors were scanned using optical microscope at 400x and hence, alpha track density / cm2 was determined. Uranium concentrations in the urine samples were calculated by the following equation [20]:…”

Section: Methodsmentioning

confidence: 99%

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Assessment of Uranium in Urine Samples of Primary School Students

Amin¹,

Haleem²

2020

ETJ

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The environmental monitoring of radon in the children urine has been carried out by using solid state nuclear track detector CR-39. This study has been undertaken for the purpose of health risk assessments. The concentration of uranium values excreted with the boy's urine samples ranged from 0.203 Bq.L-1 (1.246 ng/L) and 2.201 Bq.L-1 (13.486 ng/L) with an average value of 0.698 Bq.L-1 (4.007 ng/L). While the concentration of uranium values excreted with the girl's urine samples ranged between 0.290 Bq.L-1 (1.777 ng/L) and 0.675 Bq.L-1 (4.135 ng/L), with an average value of 0.474 Bq.L-1 (2.901 ng/L). The amount of uranium deposited in the kidneys, according to ICRP's biokinetic model, and the annual radiation dose were also calculated. All values of the study samples were within the normal range and do not indicate any health hazard.

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Section: Methodsmentioning

confidence: 99%

“…Where, ρ is the measured α-track density (Track cm −2 ), T is the exposure time, and CF is the calibration factor which is determined using equation mentioned in [20].…”

Section: Methodsmentioning

confidence: 99%

Assessment of Uranium in Urine Samples of Primary School Students

Amin¹,

Haleem²

2020

ETJ

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“…Data acquisition and analysis were performed with an ORTEC Multichannel Analyzer (MCA), Multichannel Buffer (MCB) and digiBASE. The digiBASE combines a miniaturized preamplifier and detector high voltage (0 to +1200 bias) with a powerful digital multichannel analyzer and special features for fine time-resolution measurements [15]. The NaI(Tl) detector has a gain that is sensitive to changes in ambient temperature and magnetic fields.…”

Section: A Nai(tl) Gamma Ray Spectrometermentioning

confidence: 99%

Detection Efficiency of a NaI (Tl) Gamma Spectrometry System for Measurement of Low Level Radioactivity

Ebibuloami

Ogunremi

Aina

et al. 2021

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Qualitative analysis of radionuclides requires the use of reliable gamma-ray detection system. The NaI(Tl) detector has been widely used and still one of the most used detectors today. It is therefore imperative to validate the reliability of the 5x5 cm2 NaI(Tl) gamma spectrometry system used in carrying out gamma-ray analysis of soil samples in the Radiation and Health Laboratory, Federal University of Agriculture Abeokuta, Nigeria. The gamma ray spectrometer is housed in a 5 cm thick cylindrical lead shield. Calibration was executed using standard materials produced under the auspices of the International Atomic Energy Agency (IAEA). Resolution and detection limit (LD) of the detector were determined using full width at half the maximum of the energy peak of 137Cs and background signal level of the reference materials respectively. Counting efficiencies of the detector was calculated using energies of 1460 keV, 1764keV and 2615 keV for 40K, 226Ra and 232Th respectively. Secondary samples, RGMIX1 and RGMIX2 were formulated and counted to calculate activity concentrations using the NaI(Tl) detector. Resolution of the detector was calculated to be 7.8% of 137Cs, which is good for a NaI(Tl) detector. The counting efficiency of the detector is seen to depend on the gamma ray energy. The results from this work shows that the detector system is suitable gamma spectrometry, and will give quality measurements when used for quantitative determination of radionuclides in environmental samples. The efficiency and resolution of the NaI(Tl) detector should also be determined using photon energies obtained from other radioactive sources.

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“…Their calculated doses for 241 Am were represented by a decreasing function, where absorbed doses decreased with time. Amidu et al (2013) used an integrated model to assess risks of serious health effects on members of the public (cancer death) due to release of radioactivity from 241 Am and 137 Cs following a hypothetical incident of a barrier failure. The annual dose rates for 241 Am were on the order of 10 −4 mSv y −1 and for 137 Cs were on the order of 10 −6 mSv y −1 .…”

Section: Introductionmentioning

confidence: 99%

Assessment of Cs-137, Am-241, and Cf-252 in Well Logging

Shhub

2021

Health Physics

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This paper assesses radiation exposures resulting from 137Cs, 241Am, and 252Cf during well logging incidents. Based on a hypothetical rupture incident, the computer code RESRAD-OFFSITE is run for both offsite and onsite exposure locations. The absorbed doses are compared among three radioactive sources. The adverse health and environmental impact of 241Am is higher than the impact from the other two radioactive sources (137Cs and 252Cf) due to its relatively long half-life and radioactive progeny. The serious impact of 241Am will appear many years after its abandonment depending on its initial activity in the soil. For offsite, the highest maximum dose is due to 241Am (6.18 mSv y−1), which is more than 22 times the maximum doses from 137Cs and 252Cf. For onsite, the highest maximum doses are due to 241Am (121 mSv y−1), which is more than twice the maximum doses from 137Cs and 252Cf. For offsite and onsite, the dominant pathway for 137Cs is direct radiation from soil, the dominant pathway for 241Am is drinking water followed by plant ingestion, and the dominant pathway for 252Cf is direct radiation from soil. Doses from 137Cs and 252Cf are mainly impacted by the contamination on the surface. For 241Am, the opposite is true. Americium-241 doses are mainly impacted by the contamination below the surface. Based on these findings, the exposure impact for replacing an 241Am neutron source for well logging with 252Cf is assessed.

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Assessment of naturally occurring radioactive material (NORM) in the oil drilling mud of Az Zubair oil field, Basra, Iraq

Cited by 8 publications

References 9 publications

Assessment of Uranium in Urine Samples of Primary School Students

Assessment of Uranium in Urine Samples of Primary School Students

Detection Efficiency of a NaI (Tl) Gamma Spectrometry System for Measurement of Low Level Radioactivity

Assessment of Cs-137, Am-241, and Cf-252 in Well Logging

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