Search Results - "radium"
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Influence of humic acid on radium adsorption by coir pith in aqueous solution
Published 2010“…This study examines the influence of humic acids (HA) on adsorption of radium (Ra) ions onto coir pith (CP) in aqueous solution. …”
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Assessment of radium and supported radon in ground water from Cameron Highlands area / Nor Shazlina Zainal
Published 2014“…If this water is inhaled or ingested by human, they may be exposed to the emission of energetic alpha particle from radium and supported 222Rn decaying process in this water. …”
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3
Determination of radium-226 activity concentration in water using liquid scintillation counting (LSC) technique / Siti Shahrina Agos
Published 2010“…The purposes of this study were to determine the activity concentration of radium-226 in water and to compare the value with the allowable limit. …”
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Radiological impact assessment of natural radionuclides and heavy metal contamination in industrial tin-tailing processing effluent
Published 2023“…The analysis indicates that the concentration of Radium-226 (226Ra), Radium-228 (228Ra), and Potassium-40 (40K) in samples ranged from 2.4 - 34.9 Bq/l, 0.8 - 14.7 Bq/l, and 19.5 - 299.4 Bq/l, respectively. …”
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Assessment of natural radionuclides and its radiological hazards from tiles made in Nigeria
Published 2018“…The result showed that the average activity concentrations of radionuclides (226Ra, 232Th and 40K) content are within the recommended limit. The average radium equivalent is within the recommended limit of 370 Bq/kg. …”
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Assessment of natural radioactivity in various commercial tiles used for building purposes in Nigeria
Published 2018“…The obtained results showed that the mean radium equivalent activity (Raeq), the absorbed dose rate (D), external and internal hazard index, the annual effective dose (AEDR) equivalent, Gamma activity Index (Ig) and Alpha Index (Ia) were: 204.42 Bq/kg, 177.61 nGyh1 , 0.55, 0.77, 0.96 mSvyr1 , 0.74 and 0.32 respectively. …”
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Natural radionuclide assessment of soil from Tasik Paya Bungor, Gambang. / Izzah Amirah Hazlinda Medar
Published 2018“…For the radiological risk studied in Tasik Paya Bungor, Gambang area are based on the radium equivalent activity, absorbed dose rate, annual effective dose and external hazard index. …”
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Natural Radioactivity, Radon Concentration And Heavy Metals In Soil And Water In Kedah, Malaysia
Published 2015“…Berdasarkan kepekatan aktiviti 226Ra, 232Th dan 40K yang diselidik, indeks hazad luaran (seperti indeks gama (Iγ), aktiviti setara radium (Raeq), indeks hazad luaran (Hex) dan dos luaran di luar ruangan (Dout)), indeks hazad dalaman (seperti indeks alfa (Iα), indeks hazad dalaman (Hin) dan dos luaran di dalam ruangan (Din)) dan dos berkesan tahunan (seperti dos luar berkesan (Eout) dan dos dalaman berkesan (Ein)) daripada sampel tanah telah dijumpai. …”
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A study of natural radioactivity in some building materials in Nigeria
Published 2018“…The activity concentrations in the measured samples ranged from 27 ± 8 to 82 ± 8 Bq kg−1 for 226Ra, 41 ± 4 to 101 ± 8 Bq kg−1 for 232Th and 140 ± 8 to 940 ± 19 Bq kg−1 for 40K, respectively. The Radium equivalent (Raeq) activity from the samples was found to be <370 Bq kg−1 as the recommended value for construction materials. …”
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10
Pencemaran bahan radiaoaktif di woksyop pusat angkatan tentera : satu penilaian
Published 1999“…Pihak MINT telah melakukan ujian dan mengenalpasti radionuklid yang terbabit ialah dari jenis Radium 226. Separuh hayat bagi radionuklid ini ialah 1604 tahun. …”
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Detection of natural radioactive materials in the soil of bauxite mining areas of Kuantan, Pahang, Malaysia
Published 2016“…Natural radionuclides, such as, Uranium (U-238), Thorium (Th-236), Radium (Ra-226) and Potassium (K-40) are present in the soil. …”
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Radionuclides level and its radiation hazard index in some drinks consumed in central zone of Malaysia
Published 2013“…The activity concentrations of the natural radionuclides 238U, 232Th and 40K present in the studied samples were measured and the radium equivalent activities Raeq were calculated. …”
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13
Assessment of uranium, thorium and potassium-40 in Kelantan river basin / Siti Afiqah Abdul Rahman @ Hussin
Published 2015“…As natural radionuclides that may present in the water, Water Quality Standard Malaysia introduces radium as one of the parameters that should be monitored. …”
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Evaluation of natural radioactivity and hazard indices in the soil collected from the residential college areas of University Malaya, Malaysia / Okereafor Casmir Nneji
Published 2017“…The activity concentrations of 226-Ra ranged from 42.16 to 61.27 Bq/kg, 232-Th ranged from 52.89 to 81.80 Bq/kg and 40-K ranged from 73.07 to 306.43 Bq/kg. Radium-226, Thorium-232 and Potassium-40 have average activity concentration of 52.31±2.40 Bq/kg, 68.42±1.92Bq/kg and 224.58±2.28Bq/kg respectively. …”
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Radiological dose assessment of natural radioactivity in Malaysian tiles using resrad-build computer code
Published 2018“…The activity concentration of 226Ra, 232Th, and 40K in the analyzed samples ranged from 37.50 – 158.05 Bq kg-1, 42.22 – 80.19 Bq kg-1 and 349.46 – 750.18 Bq kg-1, respectively. The determined radium equivalent activity was below than the recommended limit of 370 Bq kg-1. …”
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Determination of radionuclide activities and radon emanation power of soil from ex-mining area in Kampung Gajah, Perak / Muhammad 'Azim Jamaluddin
Published 2009“…Naturally occurring radioisotopes such as U-238 and Th-232 are present in earth's crust producing uranium and thorium daughters such as Ra-226 and Ra-228. Radium is found at low level in soil, water, rocks, coal, plants and food. …”
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Measurement of indoor and outdoor radon concentration in Ipoh, Perak / Kamarul Hafizi Kamarulzaman
Published 2009“…Radon source is from uranium ( 238U) that undergo several step of decay and radon is resulting from the radioactive decay of Radium ( 26Ra ).The measurement in Ipoh Perak was carried out by using Sun Nuclear Professional Continuous Radon Monitor model 1027 for 24 hours at hourly interval of measurement. …”
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Surface radiation dose measurement and radionuclides content in soil at Kampung Gajah, Perak / Ahmad Hanis Abdul Latif
Published 2009“…The air absorbed dose rate, radium equivalent, external hazard index and annual effective dose are in range of 153.94 to 1199.1 InGy/hr, 251.39 to 2414.51 Bq/kg, 0.67 to 6.52, and 0.18 to 1.47mSv/yr respectively. …”
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Vertical distributions of radionuclides along the tourist‑attractive Marayon Tong Hill in the Bandarban district of Bangladesh
Published 2023“…According to soil characterization, soils ranged from slightly acidic to moderately acidic, with low soluble salts. The radium equivalent activity, outdoor and indoor absorbed dose rate, external and internal hazard indices, external and internal effective dose rates, gamma level index, and excess lifetime cancer risk were evaluated and found to be below the recommended or world average values; but a measurable activity of 137Cs was found at soils collected from ground level and at an altitude of 1550 feet, which possibly arises from the nuclear fallout. …”
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Baseline radioactivity in the five candidate sites for the second nuclear power plant in Bangladesh and concomitant hazards assessment
Published 2023“…The evaluated area poses insignificant radiological concerns regarding mean absorbed dose rate, radium equivalent activity, annual effective dose, external and internal hazard indices, and excess lifetime cancer risk values. …”
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