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Готові списки джерел за темами / Radium Equivalent Activity / Статті в журналах

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Статті в журналах з теми "Radium Equivalent Activity"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Tufail, Muhammad. "Radium equivalent activity in the light of UNSCEAR report." Environmental Monitoring and Assessment 184, no. 9 (2011): 5663–67. http://dx.doi.org/10.1007/s10661-011-2370-6.

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2

Özden, Seli̇n, and Serpi̇l Aközcan Pehli̇vanoğlu. "Natural and Artificial Radioactivity Concentrations and Health Risks due to Radionuclides in the Soil of Nevşehir (Cappadocia)." International Journal on Applied Physics and Engineering 2 (October 17, 2023): 144–51. http://dx.doi.org/10.37394/232030.2023.2.14.

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Анотація:

Natural and artificial radionuclides in the surface soil samples collected from the Nevşehir (Cappadocia) region were analyzed using gamma spectrometry employing an HPGe detector. Activity concentrations of 226Ra, 232Th, and 40K range from 58.31 to 77.40 Bq kg−1, 60.56 to 90.97 Bq kg-1, and 796.42 to 1142.8 Bq kg-1, respectively. The values indicate that the activity concentrations of the natural radionuclides in the soil samples were higher than the world average. Since Turkey is a country greatly affected by the Chernobyl accident, 137Cs activity concentration was measured to determine wheth

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3

Lu, Jian, Hao Yang, and Ming Li Zhang. "The Radioactivity Levels and Safety Assessment of Building Materials in Nanjing, Jiangsu Province, China." Advanced Materials Research 243-249 (May 2011): 6913–18. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.6913.

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Анотація:

In order to invetigate the natural radioactivity levels of typical building materials in Nanjing, Jiangsu Province,China, the specific activities of natural radionuclides (226Ra,232Th and40K) in samples of building materials were measured by ORTEC HPGe gamma ray spectrometer. And the radium equivalent activity, the internal and external exposure index, and relative annual effective dose equivalents were also claculated. The average concentrations of all the samples ranged from 64 to 318.79 Bq·kg-1, 11.35 to 144.83 Bq·kg-1and 92.57 to 951.68 Bq·kg-1for226Ra,232Th and40K, respectively. Their ave

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4

Phansuke, Piya, Sunaree Boodeepong, and Mubarak Lakkiang. "Estimation of Radionuclide (226Ra, 232Th and 40K) in Soil Granite Rock Mountains Phangan District, Surat Thani Province." ASEAN Journal of Scientific and Technological Reports 24, no. 1 (2021): 14–22. http://dx.doi.org/10.55164/ajstr.v24i1.241182.

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Анотація:

The objective of this study were to analyze the specific activity of the natural radioactive nuclide of 226Ra, 232Th and 40K and to calculate the Radium equivalent activity (Raeq), the Internal hazard index (Hin), the External hazard index (Hex), the Gamma-absorbed dose rate (D) and the Annual external effective dose rate (E) in the 20 soil samples from Koh Phangan District, Surat Thani Province by using gamma-ray spectrometer with a high purity germanium detector (HPGe). The results show that the specific activity of radioactive nuclides in many samples were higher than Thailand and the globa

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5

Jameel, Athraa Naji. "Radiological Risk Assessment and Radioactivity Concentration in ediment of Tigris River of the Medical City/Bab Al Muadham." Ibn AL- Haitham Journal For Pure and Applied Sciences 35, no. 1 (2022): 28–38. http://dx.doi.org/10.30526/35.1.2796.

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The concentrations of natural radionuclides in sediment samples from various locations along the stream of the Tigris riverbank in the Medical city in Bab Al- Muadham, Baghdad, had been examined using NaI(Tl) detector. The mean concentrations of specific activity for 238U, 232Th, 40K and 137Cs for sediments of the river was 13.5±4.6, 35.2±3.1, 272.2±21.4 and 1.5±0.35 Bq/kg respectively. The findings revealed that the concentration values of natural radionuclides and cesium were below permitted limits. The radiological hazard was compared with a global average (Radium equivalent, absorbed dose

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6

Mary, Karolin, and Shanthi George. "Investigation of natural radioactivity and its associated radiological parameters in different tiles used in Kanyakumari district, Tamil Nadu, India." Radiation Protection and Environment 47, no. 2 (2024): 97–101. http://dx.doi.org/10.4103/rpe.rpe_10_24.

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Abstract Radiological parameters resulting from different tiles commonly used in homes and offices in Kanyakumari district of Tamil Nadu, India were assessed in this study by carrying out radioactivity measurement of natural radionuclides (226Ra, 232Th, and 40K) in them using a NaI (Tl) gamma-ray spectrometer. The tiles’ respective mean activity concentrations were about 49.2 Bqkg−1 for 226Ra, 49.3 Bqkg−1 for 232Th, and 479 Bqkg−1 for 40K. Radiological parameters such as radium equivalent activity, absorbed dose rate, annual effective dose, and gamma index were evaluated. The calculated mean a

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7

Bawalia, Nitin K., Dalpat Meena, Shailendra K. Gupta, et al. "Estimation of natural radioactivity in the soil samples around the uranium site, royal village, Khandela, Sikar district, Rajasthan." Radiation Protection Dosimetry 199, no. 20 (2023): 2412–18. http://dx.doi.org/10.1093/rpd/ncad265.

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Abstract The measurements of activity concentration of radium ( 226Ra ), thorium ( 232Th) and potassium ( 40K ) natural radionuclides using high purity germanium ( HPGe ) detector to assess harmful effects on people residing around Royal Uranium Site, Sikar, Rajasthan, India. The activity concentrations range from 29.03 ± 3.72 to 69.95 ± 4.07 Bq/kg for 226Ra with a mean value of 47.01 Bq/kg, 57.99 ± 6.13 to 113.94 ± 6.54 Bq/kg with a mean value of 86.56 Bq/kg for 232Th,678.19 ± 76.36 to 1426.55 ± 81.32 Bq/kg for 40K with a mean value of 1195 Bq/kg. Average Radium Equivalent Activity was measur

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8

Pillai, Rani K., and P. Rejani. "Radioactivity analysis of commonly available building and flooring material in Kerala, India." Ecology, Environment and Conservation 29 (2023): 446–51. http://dx.doi.org/10.53550/eec.2023.v29i01s.069.

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Анотація:

Building materials are primary sources of indoor gamma radiation. Therefore, we have made a detailed study of building materials which are being used extensively in the region. Primordial radionuclides namely uranium (238U), Thorium (232Th) and potassium (40K) were studied in the building materials. As of the results acquired, we can arrive at the following inferences: We have estimated specific activities of radionuclides, the radium equivalent and radiological risk parameters resulting from the gamma originating from building materials. The highest Radium equivalent activity was obtained for

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9

Elmzainy, Ahmed S. A., Salah Saleh Basil, Salha D. Y. Alsaadi, and Areej Hazawi. "Measurement of natural radioactivity in the sediments of the beaches of the north east coast of Libya." مجلة العلوم الاساسية و التطبيقية, no. 14 (August 10, 2022): 38–44. https://doi.org/10.36602/jsba.2022.14.38.

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In this study, we measured radiological hazards associated with beach sediments in the coastal area near the city of Al-Bayda, Libya. Radiation risk was assessed by estimating radium equivalent activity (Req), absorbed dose rate (DR), and annual effective dose rate (AEDR). As well as the external health risks(Hex) of the sediment samples collected. We Studies of naturally emitted gamma rays from the three radionuclides 226Ra, 232Th and 40 K. It was found that the average values of radioactivity were 8.26 Bq/Kg, 5.95 Bq/Kg and 66.1 Bq/Kg, respectively. Gamma ray measurement was performed using

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10

Odongo, Willis Otieno Gor, Margaret Chege, Nadir Hashim, Shinji Tokonami, Kranrod Chutima, and Charles Rotich. "Determination of Activity Concentration of Natural Radionuclides and Radiation Hazards’ Assessment of Building Materials in High Background Radiation Areas of Homa and Ruri, Kenya." Scientific World Journal 2021 (December 14, 2021): 1–7. http://dx.doi.org/10.1155/2021/9978619.

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The areas around Homa and Ruri hills in Homa Bay County in Kenya are associated with high background radiation levels. The activity concentration of the natural radionuclides (226Ra, 232Th, and 40K) in earthen building materials used in the areas of Homa and Ruri hills has been measured using a NaI (Tl) detector in this work. The measured values of radioactivity concentrations are used to estimate the associated radiological risk. The earthen building material samples from Ruri registered relatively high 232Th concentration values averaging 1094 ± 55 Bq/kg, nearly three times those of the samp

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11

Murad, Hasan, Md Kowsar Alam, Shyamal Ranjan Chakraborty, et al. "Effect of Fukushima Accident on Tourists Based Coastal Belts of Chittagong City, Bangladesh." Chittagong University Journal of Science 40, no. 1 (2018): 111–36. http://dx.doi.org/10.3329/cujs.v40i1.47919.

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This research work was aimed to obtain the radioactive exposure of naturally occurring and anthropogenic radioactive materials in sediment samples from the coastal belts of Chittagong city due to the Fukushima nuclear accident. The activity concentration, absorbed outdoor and indoor dose rates, annual effective dose rates and the radiation hazard indices from these samples were calculated. The correlation coefficient and Chi-square value per degree of freedom were also determined. A strong correlation between radium equivalent activity and activity of 232Th was obtained in the Bay of Bengal. H

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12

ABOJASSIM, ALI ABID, LUBNA A. AL-ALASADI, AHMED R. SHITAKE, FAEQ A. AL-TEMEMIE, and AFNAN A. HUSAIN. "Assessment of Annual Effective Dose for Natural Radioactivity of Gamma Emitters in Biscuit Samples in Iraq." Journal of Food Protection 78, no. 9 (2015): 1766–69. http://dx.doi.org/10.4315/0362-028x.jfp-15-067.

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Biscuits are an important type of food, widely consumed by babies in Iraq and other countries. This work uses gamma spectroscopy to measure the natural radioactivity due to long-lived gamma emitters in children's biscuits; it also estimates radiation hazard indices, that is, the radium equivalent activity, the representative of gamma level index, the internal hazard index, and the annual effective dose in children. Ten samples were collected from the Iraqi market from different countries of origin. The average specific activities for 226Ra, 232Th, and 40K were 9.390, 3.1213, and 214.969 Bq/kg,

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13

Farai, I. P., and J. A. Ademola. "Radium equivalent activity concentrations in concrete building blocks in eight cities in Southwestern Nigeria." Journal of Environmental Radioactivity 79, no. 2 (2005): 119–25. http://dx.doi.org/10.1016/j.jenvrad.2004.05.016.

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14

Obaid, Saba Abdulzahra. "Natural Radioactivity Levels in Some Milk Samples available in Local Markets in Babylon Governorate." JOURNAL OF UNIVERSITY OF BABYLON for Pure and Applied Sciences 26, no. 8 (2018): 92–99. http://dx.doi.org/10.29196/jubpas.v26i8.1673.

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The Uranium (238U), Thorium (232Th) and Potassium (40K) activity of specific in (Bq/kg) are measured (10) differentness types of milk which are available in market-place of Iraqi. Aspectrometry gamma ray of methodic with a NaI(Tl) detector its using for radiometric measurements. Also calculates the hazard of radiation indicates (radium equivalent activity and internally hazardous index tab) and effectiveness of Ingestion dose every sampler. The activity of specifics in a sampler of milk was varied between from (0.274±0.158) Bq/kg to (7.851±0.877) Bq/kg, for 238U, For 232Th between from (

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15

ABOJASSIM, ALI ABID, DAHIR MOHAMMAD DAHIR, AZHAR S. ALABOODI, and ABBAS H. ABONASRIA. "Annual Effective Dose of Gamma Emitters in Adults and Children for Some Types of Rice Consumed in Iraq." Journal of Food Protection 79, no. 12 (2016): 2174–78. http://dx.doi.org/10.4315/0362-028x.jfp-16-242.

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ABSTRACT This work studies the activity concentration of natural radioactivity in 20 different types of rice, including imported rice and that produced locally. The rice samples were collected from markets and farms in Iraq, and then a natural radioactivity investigation was done in the environmental laboratory of the Kufa University, using gamma-ray spectrometer systems. The research focused on measuring the activity concentration of natural radioactivity (238U, 232Th, and 40K) to determine the level of the radium equivalent activity, internal hazard indices, and annual effective dose. The re

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16

Jasaitis, Dainius, and Milda Pečiulienė. "Natural Radioactivity and Radon Exhalation from Building Materials in Underground Parking Lots." Applied Sciences 11, no. 16 (2021): 7475. http://dx.doi.org/10.3390/app11167475.

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The change of natural ionizing radiation and the radon exhalation rates from typical building materials in underground parking lots are presented in the article. The activity concentration of natural radionuclides 232Th, 226Ra, and 40K in six important types of construction materials, which are mostly used in Lithuania, were analyzed using high-resolution gamma spectroscopy. The highest values were found in concrete and ferroconcrete samples: 226Ra 44 and 90 Bq kg−1; 232Th 29 and 34 Bq kg−1; 40K 581 and 603 Bq kg−1. A strong positive correlation (0.88) was observed between radium activity conc

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17

Song, Gang, Min Xing Lu, Qiu Ping Zhu, Di Yun Chen, and Yong Heng Chen. "Natural Radioactivity of Topsoil in Two Granite Areas of Guangzhou, South China." Advanced Materials Research 955-959 (June 2014): 3691–95. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.3691.

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The natural radionuclide (238U, 226Ra, 232Th and 40K) concentrations in 152 soil samples were determined from two major granite areas in Guangzhou, using high resolution γ-ray spectroscopic system based on the characteristic spectral peaks. The mean activity values for 238U, 226Ra, 232Th and 40K were found to be 156.6±98.8, 160.9±96.5, 184.8±101.5 and 832.5±493.1 Bq kg–1 dry mass, respectively. The absorbed dose rate (D) calculated from activity concentration of 226Ra, 232Th and 40K ranged from 53.2 to 497.1 nGy h–1 with a mean of 220.7 nGy h–1. The Radium equivalent activity (Raeq), the outdo

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18

M. Hasan, Nada, Jamal K. Alsaedi, Salam K. Alnasri, and Ali A. Abdulhasan. "Determination the Natural Radioactivity Levels at Selected Regions in Al-Najaf Governorate." Al-Nahrain Journal of Science 24, no. 2 (2021): 33–40. http://dx.doi.org/10.22401/anjs.24.2.06.

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The natural radioactivity levels for radium(226Ra), thorium (232Th) and potassium (40K) have been determined in soil samples selected from different regions in Najaf governorate in Iraq. The samples were collected from the ground surface. Eight samples were measured by gamma ray spectroscopy using high purity germanium detector. The levelsof radionuclides concentrations in selected samples 232Th, 226Ra and 40K were in the range of (2.5±0.29 to 7.7±0.52) Bq/kg (6.3±0.43 to 16.4±1.9) Bq/kg and (31.5±3.4 to 204.1±11.9) Bq/kg for, respectively. The mean Radium Equivalent Activity, External and Int

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19

Al-Khazzar, Akram, and Rand Al-Dulaimi. "Determination of natural radioactivity concentrations in rolled oat brands available in the Iraqi market." Radiation Protection and Environment 46, no. 4 (2023): 127–31. http://dx.doi.org/10.4103/rpe.rpe_39_23.

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Анотація:

Abstract Oat is a nutritious healthy type of food that is widely consumed by various athletes and diet food in Iraq. This study aims to measure the natural radioactivity of potassium-40, Radium-226, and Radium-228 in rolled oat brands that are widely consumed in Iraq. Five types of oat brands retailed in Baghdad markets were collected and analyzed. A high-purity germanium detector was used for the gamma spectroscopy analysis. The mean activity concentration values of 226Ra, 228Ra, and 40K ranged from 6.9–10.6, 3.9–6.7, to 210–484 Bq/kg, respectively. The annual effective dose was the highest f

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20

AL-abrdi, Asma M., Areej A. Hazawi, Salha D. Y. Alsaadi, and Randa H. Abdullah. "Estimation of Annual Gonadal Dose Equivalent in Some Livestock Food in Libyan Markets." Al-Mukhtar Journal of Sciences 38, no. 2 (2023): 134–39. http://dx.doi.org/10.54172/mjsc.v38i2.1207.

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Анотація:

In the present study, the concentrations of 226Ra, 232Th, 238U, and 40K in 10 different samples of foodstuff are investigated using a gamma spectrometer with a Sodium iodide detector NaI(TI). The results indicated that the concentration of 226Ra, 232Th, 238U, and 40K in the samples ranged from (19.14 to 99.79) Bq/kg for radium, the activity concentration of Thorium ranged from (31.09 to 124.93) Bq/kg, the activity concentration of uranium ranged from (24.86 to 103.01) Bq/kg and the activity concentration of potassium ranged from (101.83 to 480.92) Bq/Kg. The results indicated that the annual g

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21

Śleziak, Monika, and Marek Duliński. "Suitability of rocks and sediments from Brzeszcze and Silesia coal mines as building materials in terms of radiological hazard." Nukleonika 64, no. 2 (2019): 65–70. http://dx.doi.org/10.2478/nuka-2019-0008.

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Abstract The isotope activity concentration of rocks and bottom sediments was evaluated based on the samples collected from sedimentation ponds and gangue repositories. Radium 226Ra, thorium 228Th and potassium 40K activities were measured by gamma spectrometry using high-purity germanium detector – HPGe 4020. The radiation effect resulting from the presence of natural radionuclides was estimated by radiological hazard indices such as f1 and f2 coefficients, radium equivalent, internal and external hazard indices and absorbed dose rate. Performed measurements and calculations have shown that t

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22

Shayeb, M. Abu, A. Majid, and S. Zobidi. "Distribution of natural radioactivity and radiological hazard using a NaI(Tl) gamma-ray spectrometric system." Journal of Building Physics 40, no. 4 (2016): 324–33. http://dx.doi.org/10.1177/1744259116631048.

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The concentrations of 226Ra, 232Th, and 40K are measured in the material collected from two locations. The collected materials are analyzed using gamma-ray spectrometry. The activity concentration of the naturally occurring radionuclides 226Ra, 232Th, and 40K in building material varies from 12.6 to 121.4, 13.6 to 142, and 69.5 to 620.6 Bq kg−1, respectively. The radium equivalent activity, absorbed dose rate, annual effective dose, and hazard index are also calculated.

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23

Hussein, Zakariya A. "Assessment of Natural Radioactivity Levels and Radiation Hazards for Soil Samples Used in Erbil Governorate, Iraqi Kurdistan." ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY 7, no. 1 (2019): 34. http://dx.doi.org/10.14500/aro.10471.

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In this work, the activity concentrations of natural radionuclides 226Ra, 232Th and 40K in soil samples from Erbil governorate, Iraqi Kurdistan were investigated by a gamma-spectroscopy system based on high-purity germanium (HPGe) detector. This is to assess the dose of radionuclides exposure to the population, knowing the health risks and to have a baseline for future changes in the environmental radioactivity. It was found that the activity concentrations of 226Ra, 232Th and 40K were ranged from (14.6 ± 1.6 to 38.2 ± 2.8 Bq.kg-1), (4.5 ± 1.4 to 52.4 ± 5.8 Bq.kg-1) and ( 302.8 ± 12.6 to 388.6

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24

Mitrovic, Branislava, Dragana Todorovic, Jelena Ajtic, and Borjana Vranjes. "A review: Natural and artificial radionuclides and radiation hazard parameters in the soil of mountain regions in Serbia." Journal of Agricultural Sciences, Belgrade 65, no. 1 (2020): 1–18. http://dx.doi.org/10.2298/jas2001001m.

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This review paper discusses the content of natural (40K, 238U, 226Ra, and 232Th) and artificial (137Cs) radionuclides in the soil of the mountains of Maljen, Tara and Kopaonik in the Republic of Serbia over 2002-2015. In addition, the paper gives radiation hazard parameters, i.e., radium equivalent activity, absorbed dose rate, annual effective dose equivalent, external hazard index, annual gonadal dose equivalent, and excess lifetime cancer risk outdoors that we calculated from the obtained content of the natural radionuclides in the soil samples. We compared the parameters to previously publ

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25

Antovic, Nevenka, Danilo Boskovic, Nikola Svrkota, and Ivanka Antovic. "Radioactivity in soil from Mojkovac, Montenegro, and assessment of radiological and cancer risk." Nuclear Technology and Radiation Protection 27, no. 1 (2012): 57–63. http://dx.doi.org/10.2298/ntrp1201057a.

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Анотація:

Soil samples from Mojkovac, Montenegro, were analyzed by standard gamma-spectrometry for radioactivity due to 226Ra, 232Th, 40K, and 137Cs. Average activity concentrations have been found to be 28.6, 43.1, 620.8, and 55 Bq/kg, respectively. In order to evaluate the radiation hazard, radium equivalent activity, absorbed dose rate, annual effective dose, external and internal hazard indexes, and the annual gonadal dose equivalent were determined and found to be at an average of 133.79 Bq/kg, 65.18 nGy/h, 79.93 mSv/y, 0.37, 0.45, and 0.46 mSv/y, respectively. With life expectancy taken to be 70 y

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26

Zayir, Yousif M., Nada S. Ahmedzeki, Takrid M. Nafae, Wssam Zaidan, O. El Samad, and Rola Bou Khozam. "Radiological Assessment and Mechanical Separation of NORM Contaminated Soil from Iraqi Oil Fields." Iraqi Journal of Chemical and Petroleum Engineering 17, no. 2 (2016): 25–35. http://dx.doi.org/10.31699/ijcpe.2016.2.4.

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Naturally occurring radioactive materials (NORM) contaminated sites at Al-Rumaila Iraqi oil fields have been characterized as a part of soil remediation project. Activity of radium isotopes in contaminated soil have been determined using gamma spectrometer High Purity Germanium detector (HPGe) and found to be very high for Al-Markezia, Al-Qurainat degassing stations and storage area at Khadhir Almay region. The activity concentration of samples ranges from 6474.11±563.8 Bq/kg to 1232.5±60.9 Bq/kg with mean value of 3853.3 Bq/kg for 226Ra, 843.59±8.39 Bq/kg to 302.2±9.2 Bq/kg with mean value of

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27

Rahman, Saeed, and Muhammad Rafique. "232Th, 226Ra, and 40K activities and associated radiological hazards in building materials of Islamabad capital territory, Pakistan." Nuclear Technology and Radiation Protection 27, no. 4 (2012): 392–98. http://dx.doi.org/10.2298/ntrp1204392r.

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Radioactivity levels in building materials, collected from the Islamabad capital territory have been determined by using a gamma spectrometric technique. Measured specific activities of 226Ra, 232Th, and 40K in material samples ranged from 8 ? 1 to 116 ? 6 Bq/kg, 9 ? 1 to 152 ? ? 5 Bq/kg, and 29 ? 6 to 974 ? 23 Bq/kg, respectively. The radium equivalent activity, absorbed dose rate, annual effective dose, and gamma index were evaluated from the measured amounts of radioactivity to assess the radiation hazard associated with the studied building materials. The mean radium equivalent activity, t

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28

Akkurt, I., and K. Günoğlu. "Natural Radioactivity Measurements and Radiation Dose Estimation in Some Sedimentary Rock Samples in Turkey." Science and Technology of Nuclear Installations 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/950978.

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Анотація:

The natural radioactivity existed since creation of the universe due to the long life time of some radionuclides. This natural radioactivity is caused byγ-radiation originating from the uranium and thorium series and40K. In this study, the gamma radiation has been measured to determine natural radioactivity of238U,232Th, and40K in collected sedimentary rock samples in different places of Turkey. The measurements have been performed usingγ-ray spectrometer containing NaI(Tl) detector and multichannel analyser (MCA). Absorbed dose rate (D), annual effective dose (AED), radium equivalent activiti

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29

A. H, El-Afandy, Mohamed G. El-Feky, Samia H. Taha, et al. "Radioactivity and Environmental Impacts of Granites from Um Ara, Southeastern Desert, Egypt." Journal of Physics: Conference Series 2305, no. 1 (2022): 012033. http://dx.doi.org/10.1088/1742-6596/2305/1/012033.

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Abstract Granites from the Southeastern Desert of Egypt were investigated by using in situ γ-ray spectrometer. Consequently, estimating the radiological effects from these rocks were achieved through calculation of some radiological parameters; Annual effective dose equivalent AEDE, Internal hazard index Hin, External hazard index Hex, Alpha activity index Iα, Excess lifetime cancer risk, ELCR, Annual gonadal dose equivalent AGDE, Gamma activity concentration index Iγ and Radium equivalent activity Raeq. The geological nature of the region under investigation was affected by the radioactivity

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Aman, G. F., G. O. Avwiri, and C. P. Ononugbo. "Assessment of Radionuclide Contents of Sediment in Ngo River, Andoni Local Government Area of Rivers State in Nigeria." RESEARCH JOURNAL OF PURE SCIENCE AND TECHNOLOGY 6, no. 1 (2023): 12–26. http://dx.doi.org/10.56201/rjpst.v6.no1.2023.pg12.26.

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Assessment of Radionuclide Contents of Sediment in Ngo River, Andoni L.G.A of Rivers State in Nigeria was carryout successfully. Ten (10) samples were collected at ten different points within the river and it environ. The collected samples were analyzed in the laboratory to ascertain the radionuclide content. The result shows the presence of radionuclide of potassium – 40, radium – 226 and thorium – 232 in the samples. The concentration level of the samples result in the area were found to be 68.48 ± 4.84 BqKg -1 , 23.47 ± 4.23 BqKg -1 and 77.25 ± 12.54 BqKg -1 for Potassium – 40, Radium – 226

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Jannatul, Ferdous, Nahar Nipa Munmun, and Rezaur Rahman A.K.M. "Assessment of Radionuclide Concentrations in Tea Samples Cultivated in Chittagong Region, Bangladesh." International Journal of Life Sciences and Technology (IJLST) ISSN: 0974-5335 11, no. 3 (2018): 20–30. https://doi.org/10.5281/zenodo.1625628.

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<strong>Title:</strong> Assessment of Radionuclide Concentrations in Tea Samples Cultivated in Chittagong Region, Bangladesh <strong>Authors & Affiliation:</strong> Jannatul Ferdous1, Munmun Nahar Nipa2 and A.K.M. Rezaur Rahman3 1 Health Physics Division, Atomic Energy Centre, Dhaka, BANGLADESH 2 & 3 Department of Physics, University of Chittagong, BANGLADESH ferdous28@yahoo.com, nipacu92@gmail.com, rezaur1970@yahoo.com <strong>Abstract:</strong> The purpose of the present study is to assess the activity concentration of radionuclides in tea samples which were cultivated in Chitttagong

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32

Akkurt, İskender, and Kadir Günoğlu. "Radioactivity Levels of Some Natural Stones in Burdur, Turkey." Advanced Science, Engineering and Medicine 11, no. 11 (2019): 1060–63. http://dx.doi.org/10.1166/asem.2019.2458.

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Radionuclides such as uranium, thorium and potassium have existed in the environment since the world's existence. It is important to know the distribution of these radionuclides in terms of human health and environmental protection. For this reason, the measurements of these natural radionuclides were made for the 6 stone samples extracted in the province of Burdur. To measure the natural activity concentrations of potassium-40, radium-226 and thorium-232 radionuclides, a gamma spectrometry method was used with a NaI (T1) detector which is a multichannel analytical detector in the gamma spectr

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33

R. Al-Ani, Rana, and Sahar A. Amin. "Gamma activity in Tigris river water and Rustumai wastewater treatment plant." International Journal of Physical Research 8, no. 1 (2020): 27. http://dx.doi.org/10.14419/ijpr.v8i1.30803.

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Анотація:

The activity level of 226Ra, 232Th and 40K radionuclides at selected locations of Tigris River and Rustumai water treatment plant (before and after treatment) has been determined by using NaI(Tl) gamma spectrometry. The results show that the total average activity values were 44.3Bq kg−1 and 789.6Bq kg−1 for 226Raand 40K, respectively. These values are higher than the world recommended values given by UNSCEAR, while the total activity concentration of 232Th was within the world recommended value of 30 Bq.kg-1. Radiological hazard indices such as: radium equivalent activity in Bq.kg−1, annual e

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34

Ajetunmobi, A. E., P. Biere, S. K. Alausa, et al. "Measurement of activity concentrations of rock samples from rocks- surrounded town in Igbeti, Oyo State, Nigeria." Scientia Africana 21, no. 1 (2022): 183–94. http://dx.doi.org/10.4314/sa.v21i1.16.

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Rocks are known to contain radionuclides that emit radiation continuously. The assessment of activity concentrations of rock samples from Igbeti, Oke-Ogun has been investigated. Twenty (20) rock samples were randomly collected from different rock sites. The rock samples were pulverized at the laboratory of the Department of Geology, University of Ibadan. 200g of each collected sample was allowed to attain secular equilibrium by enclosing it in a plastic container for twenty-eight (28) days. Radiometric analysis of the samples was carried out at the radiation laboratory of the Physics Departmen

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35

AS-Subaihi, Fuad Abdo, Tahir Abdullah Abdulgabar Salem, and Mahmood Issa Ahmed. "ASSESSMENT OF NATURAL RADIOACTIVITY LEVEL AND ASSOCIATED RADIOLOGICAL HAZARDS IN MARINE SEDIMENT SAMPLES COLLECTED FROM ABYAN BEACH, GULF OF ADEN, YEMEN." Electronic Journal of University of Aden for Basic and Applied Sciences 4, no. 1 (2023): 18–30. http://dx.doi.org/10.47372/ejua-ba.2023.1.217.

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Twenty three marine sediment samples taken from the side beach from the Abyan beach, Aden Gulf, Yemen to measuring the activity concentration of terrestrial radionuclides radium-226, thorium-232 and potassium-40 and its associated hazard indices using gamma spectrometer with High-Purity Germanium HPGe detector. The average activity concentration of natural radionuclides 226Ra, 232Th and 40k in marine sediments samples under investigation were 16.25± 0.63Bqkg-1, for Ra-226, 23.80± 1.46Bqkg-1 for Th-232 and 518.54±44.61Bqkg-1 for K-40 respectively. The radiation hazard indices which resulting fr

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36

Hussein, Zakariya A., Najeba F. Salih, and Shalaw Z. Sedeeq. "Assessment the Natural Radioactivity of Radionuclides ( 226Ra, 232Th, 40K, and 137Cs) in Wheat Grain." ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY 9, no. 1 (2021): 95–102. http://dx.doi.org/10.14500/aro.10736.

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This paper investigates the activity concentration of radionuclides (226Ra, 232Th, 40K and 137Cs) in the wheat grain samples using a high-purity germanium detector. Thirty-six wheat grain samples were collected from different locations of Koya City, Iraqi Kurdistan region. Average activity concentrations of 226Ra, 232Th and 40K in wheat grain are found to be 0.407 ± 0.097 Bq.kg-1 for 226Ra, 0.36 ± 0.14 Bq.kg-1 for 232Th and 109.25± 2.214 Bq.kg-1 for 40K, respectively. The measured activity concentrations for the radionuclides are compared with the reported data from other countries. In additio

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37

Caridi, Francesco, Giuseppe Paladini, Santina Marguccio, et al. "Evaluation of Radioactivity and Heavy Metals Content in a Basalt Aggregate for Concrete from Sicily, Southern Italy: A Case Study." Applied Sciences 13, no. 8 (2023): 4804. http://dx.doi.org/10.3390/app13084804.

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In the present paper, an investigation on the natural and anthropic radioactivity and heavy metals content in a basalt aggregate for concrete from Sicily, Southern Italy, was performed as a case study. In particular, the evaluation of the specific activity of radium-226, thorium-232, potassium-40 and caesium-137 radionuclides was performed by using High-Purity Germanium (HPGe) γ-ray spectrometry, together with the estimation of several indexes developed to evaluate the radiological risk for the population related to radiation exposure, i.e., the alpha index (Iα), the radium equivalent activity

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38

Rajendiran, D., S. Karthikayini, K. Veeramuthu, and N. Harikrishnan. "Gamma Ray Spectroscopy Analysis of Sediments of Coastal Areas in Ennore, Tamil Nadu." Indian Journal Of Science And Technology 17, no. 8 (2024): 760–72. http://dx.doi.org/10.17485/ijst/v17i8.2464.

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Анотація:

Objectives: This research focuses on the determination of the natural radionuclides radium, thorium, and potassium in the twenty-six sediment samples collected at the sea, beach, and creek regions of Ennore Port. Methods: The activity concentrations of 226Ra, 232Th, and 40K were determined using gamma ray spectrometry with a high-purity germanium (HPGe) detector. Findings: The average activity concentrations of 226Ra, 232Th, and 40K were in the descending order of 40K (397.58 Bq kg-1) > 232Th (65.83 Bq kg-1) > 226Ra (18.28 Bq kg-1). The estimated average values of radiological parameters

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39

Kanu, Maxwell Obia, Nehemiah Bweseh Audu, Lucky Peter Kenda, Terkaa Victor Targema, and Hyacinth Kevin Idu. "Assessment of radioactivity and radiological hazards associated with clay bricks in Jalingo City and its metropolis, North-Eastern Nigeria." Science World Journal 19, no. 4 (2025): 1194–201. https://doi.org/10.4314/swj.v19i4.38.

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This study estimates the radiation safety of soils used in making clay bricks, a common building material in Jalingo City and its surrounding areas. The activity concentration of the natural radioactive elements 238U, 232Th, and 40K in the soils was measured using a gamma-ray spectrometer equipped with a 905-3 NaI (TI) crystal detector and a high photomultiplier measuring 7.62 cm by 7.62 cm. The average activity concentrations of 238U, 232Th, and 40K in the soils were 12.5±1.3, 26.7±1.7, and 65.1±5.2 Bqkg-1 respectively, all of which were lower than the global average concentrations. The resea

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40

Karakaya, Muazzez Çelik, Mahmut Doğru, Necati Karakaya, Hasibe Cingilli Vural, Fatih Kuluöztürk, and Sultan Şahin Bal. "Radioactivity concentrations and dose assessments of therapeutic peloids from some Turkish spas." Clay Minerals 50, no. 2 (2015): 221–32. http://dx.doi.org/10.1180/claymin.2015.050.2.06.

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AbstractThe activity concentrations of natural radionuclides in peloids were studied to assess the radiologic hazard from 18 Turkish spas. The peloids are mainly used for therapeutic treatments, rheumatic diseases and aesthetic purposes. The concentrations of the natural radionuclides 226Ra, 232Th, 40K and 137Cs were determined with a gamma ray spectrometer using a HPGe detector. The average activity concentrations of 226Ra, 232Th, 40K, and 137Cs in the peloids studied were 110.69, 71.52, 576.48 and 0.447 Bq/kg, respectively. The radium equivalent activities in the peloid samples ranged from 6

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41

S.Khalf, Yassamin, and Kareem K. Mohammad. "Measurement of Natural Radioactivity Level in Selected Phosphate Fertilizer Samples Collected from Iraqi Markets." Al-Nahrain Journal of Science 24, no. 3 (2021): 43–49. http://dx.doi.org/10.22401/anjs.24.3.07.

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Анотація:

The Gamma-ray spectrometry (spectra line Gp) and a high-purity germanium (HPGe) detector were used to determine the activity concentrations of 226Ra, 232Th, and 40K in fertilizer samples. 226Ra, 232Th, and 40K activity concentrations in fertilizers and phosphate raw. In this study the gamma index(I), Radium equivalent dose(Raeq),dose rate(DR),external hazard index(Hex) internal hazard index(Hin), annual effective dose outdoor(AEDout) and annual effective dose indoor(AEDin)were found. This study could serve as a starting point for figuring out how fertilizer radiation affects human health.

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42

Bui, Thi-Hong, Van-Loat Bui, Somsavath Leuangtakoun, et al. "Characteristics of natural radionuclides and 137Cs in surface soil in Phonsavan, Xiengkhouang, Laos." Nuclear Technology and Radiation Protection 38, no. 4 (2023): 289–300. http://dx.doi.org/10.2298/ntrp2304289b.

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Assessment of the characteristics of natural radionuclides and 137Cs in soil in Phonsavan district, Xiengkhouang province, Laos has been conducted using a standard electrode coaxial Ge (SEGe) detector. Soil samples were collected at 20 locations close to the populated and agricultural area in Phonsavan district. The average activity concentrations of 226Ra, 238U, 232Th, 40K and 137Cs are 54.0 ? 2.5, 65.1 ? 4.4, 96.9 ? 3.7, 433.2 ? 20.7, and 1.54 ? 0.13 Bqkg-1, respectively. The average radium equivalent activity Raeq is 225.9 ? 7.8 Bqkg-1. The highest Raeq of 269.9 Bqkg-1 is still lower than t

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43

Arıman, Sema, and Hasan Gümüş. "Radioactivity levels and health risks due to radionuclides in the soil and sediment of mid-Black Sea: Kızılırmak Deltas-Turkey." Radiochimica Acta 106, no. 11 (2018): 927–37. http://dx.doi.org/10.1515/ract-2017-2896.

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Abstract Artificial and natural radionuclide pollutants of the marine environment have been recognized as a serious environmental concern. In this study, the activity concentrations of terrestrial and anthropogenic radionuclides in the soil and sediment samples collected from Bafra Kızılırmak Delta were measured by using gamma spectrometry with an NaI (Tl) detector. The average specific of activity concentrations for 238U, 232Th and 40K were found to be 28.59, 17.48 and 150.59 Bq kg−1, respectively. On the other hand, 137Cs was also measured in some samples. 137Cs (t1/2=30.17 years) is a man-m

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C V, VISHNU, and Antony Joseph. "Evaluation of Natural Radioactivity Levels and Exhalation rate of 222Rn and 220Rn in the Soil Samples from the Kuthiran Hills, Kerala, India." Journal of Nuclear Physics, Material Sciences, Radiation and Applications 9, no. 2 (2022): 229–39. http://dx.doi.org/10.15415/jnp.2022.92034.

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Background: Exposure to radon and its decay products is one of the important contributors of radiation doses to human population. Radon exhalation study is important for understanding the contribution of the soil towards the total radioactivity concentration found inside the dwellings. Purpose: The aim of the present study is to investigate the radioactivity levels and radium and radon exhalation rates in soil samples collected from Kuthiran hills and nearby places in Thrissur district, Kerala state, India. On the basis of this data, radiological health hazard parameters are also evaluat

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45

Makmur, Murdahayu, Wahyu Retno Prihatiningsih, and Mohamad Nur Yahya. "Penilaian Dampak Bahaya Radiologis terhadap Radionuklida Natural di Pesisir Pulau Bengkalis." JURNAL KESEHATAN LINGKUNGAN INDONESIA 18, no. 2 (2019): 113. http://dx.doi.org/10.14710/jkli.18.2.113-120.

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Latar belakang : Radionuklida natural ditemukan hampir di semua media lingkungan, dan di lingkungan laut terdeteksi cukup tinggi karena adanya proses erosi, pelapukan dan daur ulang mineralyang mengalami perpindahan melalui badan air. Radionuklida natural tersebutdapat berpindah ke berbagai media, termasuk ke manusia melalui rantai makanan.Penelitian ini dilakukan untuk memberikan informasi dasar mengenai tingkat radioaktivitas di lingkungan perairan laut di Pesisir Pulau Bengkalis dan melakukan penilaian dampak bahaya radiologis melalui aktivitas ekuivalen radium (Raeq) dan indeks bahaya ekst

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46

Dahesh, Mohamed N., Samir Y. El-Kameesy, Mogahed E. Al-Abyad, Gobran N. Ali, and Abdullah T. Naji. "Natural Radionuclides Concentrations and Associated Radiation Hazard of Some Building Rocks Used in Taiz City, Yemen." University of Science and Technology Journal for Engineering and Technology 1, no. 2 (2024): 21–40. http://dx.doi.org/10.59222/ustjet.1.2.2.

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Анотація:

Building materials comprise a diverse range of natural rocks that contain varying mineral components including radionuclides. Gamma spectrometry-based high-purity Germanium detectors were utilized to measure the activity concentrations of natural radionuclides: Radium-226 (226Ra), Thorium-232 (232Th), and Potassium-40 (40K) in various building rock samples found within and surrounding Taiz city. The activity concentrations of 226Ra, 232Th, and 40K vary from 27.79 ± 0.77 to 234.49 ± 3.13 Bq.kg-1, 25.82 ± 0.40 to 415.31 ± 2.47 Bq.kg-1, and 457.91±2.61 to 1139.56 ± 5.43 Bq.kg-1 with overall avera

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47

Lewicka, Sylwia, Barbara Piotrowska, Aneta Łukaszek-Chmielewska, and Tomasz Drzymała. "Assessment of Natural Radioactivity in Cements Used as Building Materials in Poland." International Journal of Environmental Research and Public Health 19, no. 18 (2022): 11695. http://dx.doi.org/10.3390/ijerph191811695.

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Анотація:

It has been analyzed in this article the radioactivity concentrations of 226Ra, 232Th, 40K and radiological hazard parameters in different types of cements commonly used in Poland and available on the Polish market. The radiological hazard parameters are, in particular, absorbed gamma dose rate, annual effective dose, radium equivalent activity, the external hazard index, and the gamma and alpha indices. The radionuclide activities of the most important radionuclides 226Ra, 232Th, 40K have been determined by gamma-ray spectrometry with the use of two kinds of spectrometers of different operati

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48

Aktar, Mst Najnin, Suranjan Kumar Das, Selina Yeasmin, MM Mahfuz Siraz, and AFM Mizanur Rahman. "Measurement of Radioactivity And Assessment of Radiological Hazard of Tea Samples Collected From Local Market In Bangladesh." Journal of Bangladesh Academy of Sciences 42, no. 2 (2018): 171–76. http://dx.doi.org/10.3329/jbas.v42i2.40049.

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Анотація:

The activity concentrations of natural radionuclides and radiological hazard indices in eleven tea samples collected from local market in Bangladesh have been analyzed by using High Purity Germanium (HPGe) Detector. The average activity concentrations of 226Ra, 232Th and 40K in tea samples have been found to be 21.21±14.04, 32.43±7.48 and 93.47 ± 43.94 Bqkg-1 respectively. The calculated absorbed dose rates due to these radioactive nuclides in tea samples have been found to vary from 26.24 nGyh-1 to 37.95 nGyh-1 and average value was 33.28 nGyh-1. The estimated outdoor annual effective dose ra

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49

D, Rajendiran, Karthikayini S, Veeramuthu K, and Harikrishnan N. "Gamma Ray Spectroscopy Analysis of Sediments of Coastal Areas in Ennore, Tamil Nadu." Indian Journal of Science and Technology 17, no. 8 (2024): 760–72. https://doi.org/10.17485/IJST/v17i8.2464.

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Анотація:

Abstract <strong>Objectives:</strong> This research focuses on the determination of the natural radionuclides radium, thorium, and potassium in the twenty-six sediment samples collected at the sea, beach, and creek regions of Ennore Port. <strong>Methods:</strong> The activity concentrations of 226Ra, 232Th, and 40K were determined using gamma ray spectrometry with a high-purity germanium (HPGe) detector.<strong> Findings:</strong> The average activity concentrations of 226Ra, 232Th, and 40K were in the descending order of 40K (397.58 Bq kg-1) > 232Th (65.83 Bq kg-1

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50

Živković, Milena, Nenad Zlatić, Dragana Krstić, and Milan Stanković. "Health risk assessment of natural and artificial radionuclides in medicinal plants." Kragujevac Journal of Science, no. 43 (2021): 15–22. http://dx.doi.org/10.5937/kgjsci2143015q.

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In the present work, we determined activity concentrations of ten Medicinal herbs using gamma spectrometry. The radioactivity concentration of 226 Ra, 232 Th, 40 K and 137 Cs were 2.82, 0.63, 984.32, 0.28 Bq/kg, respectively. These doses are not hazardous to the general public's health. The mean values of radium equivalent activity (Raeq), absorbed dose rates (D), annual effective dose (De) and external hazard index (Hex) are 79.51 Bq/kg, 42.73 nGy-1 , 52.40 µSv and 0.21, respectively. Medicinal plants used to make tea do not contain a concentration of tested radionuclides that would cause neg

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