Assessment of natural radioactivity levels and identification of minerals in Brahmaputra (Jamuna) river sand and sediment, Bangladesh

Khalil, Md. Ibrahim; Majumder, Ratan Kumar; Kabir, Md. Zafrul; Deeba, Farah; Khan, M. N. I.; Ali, Md. Idris; Paul, Debasish; Haydar, M. A.; Islam, Syed Mohammad Azharul

doi:10.4103/0972-0464.199980

Cited by 16 publications

(4 citation statements)

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“…In addition, Hematite rocks have the ability to effectively incorporate radium into their crystal structure. [17,18]. In contrast, compared to other investigated rocks, the concentration of 226 Ra in Basalt rocks was relatively low.…”

Section: Annual Gonadal Dose Equivalent (Agde)mentioning

confidence: 59%

Natural Radionuclides Concentrations and Associated Radiation Hazard of Some Building Rocks Used in Taiz City, Yemen

Dahesh,

El-Kameesy,

Al-Abyad

et al. 2024

UST J Eng Tech

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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 average value of 71.55 Bq.kg-1, 93.87 Bq.kg-1, 966.88 Bq.kg-1 respectively, these values were higher than the permissible thresholds. Furthermore, several radiation hazard indices were estimated including the radium equivalent (Raeq), the external hazard index (Hex), the internal hazard index (Hin), the gamma level index (Iɤ), the dose rate(Dɤ), the annual effective dose equivalent (AEDE), the excess lifetime cancer risk (ELCR), and the annual gonadal dose equivalent (AGDE). The findings illustrated that Basalt rocks have the minimum values of radiation hazard indices while the Himatite rocks have the maximum values of radiation hazard. The average values of radiation risks for most of building rocks fall below the recommended limits for safety. Based on the Radiation hazard indices of building rock samples, it can be concluded that with the exception of hematite rocks, all the examined rocks are considered safe for use in construction materials and pose non-significant radiation risks. The awareness about natural radioactivity levels of building rocks is critical for planning and performing strategies in radiation safety of buildings.

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Section: Annual Gonadal Dose Equivalent (Agde)mentioning

confidence: 59%

Natural Radionuclides Concentrations and Associated Radiation Hazard of Some Building Rocks Used in Taiz City, Yemen

Dahesh,

El-Kameesy,

Al-Abyad

et al. 2024

UST J Eng Tech

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“…No studies were conducted on the content of radionuclides in bottom sediments in the area of the Rooppur NPP, but in 2017, there was published a paper on the content of natural radionuclides in the bottom sediments of the Brahmaputra River [18]. The average content of 232 Th and 40 K was 113 and 1002 Bq/kg, respectively.…”

Section: Results Of the Measurementsmentioning

confidence: 99%

The Programme and Results of the Radioecological Monitoring of Freshwater Ecosystems in the Vicinity of Rooppur NPP (People’s Republic of Bangladesh)

Mikailova¹,

Panov²,

Kurbakov³

2020

RAP 2019 Conference Proceedings

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The paper presents an overview of the radioecological monitoring programme of aquatic ecosystems in the vicinity of nuclear power plants and presents the results of its implementation in the 30-km zone of the Rooppur NPP in the People's Republic of Bangladesh. The environmental survey has shown that the content of radionuclides in different components of observed freshwater ecosystems is low and that the radiation situation of the region is safe.

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“…Удельная активность 3 H в донных отложениях составляла менее 3 Бк•кг −1 , за исключением трёх проб в 2017 г. (12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30) Бк•кг −1 ), что обусловлено, по всей видимости, локальным загрязнением. Удельная активность 90 Sr в высшей водной растительности была на уровне 0,4-3,9 Бк•кг −1 , а 137 Cs -0,4-1,0 Бк•кг −1 .…”

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“…В то же время данный факт требует дополнительного изучения для определения возможного источника загрязнения. Исследований по содержанию радионуклидов в донных отложениях р. Падма в районе строительства АЭС «Руппур» ранее не проводили, но в 2016 г. была опубликована работа о концентрации естественных радионуклидов в донных отложениях р. Брахмапутра, являющейся по расположению и размерам схожей с р. Падма[26]. По данным этих исследований, среднее содержание232 Th и 40 K в донных отложе-Radionuclide content in components of freshwater ecosystem of the Padma River in the vicinity of Rooppur NPP, Bq•kg −1 (Bq•L −1 ) (numerator is the mean; denominator is min.-max.)…”

unclassified

Комплексный Радиационно-Экологический Мониторинг Водных Экосистем В Регионе Размещения АЭС «Руппур» (Народная Республика Бангладеш)

Mikailova

Kurbakov

Sidorova

et al. 2020

mbj

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The paper presents experience of developing and maintaining a system of radioecological monitoring of freshwater ecosystems in the vicinity of Rooppur Nuclear Power Plant (Bangladesh). Components of freshwater ecosystems in the zone of NPP impact are both very informative for determining the environmental state and very important for conducting economic activities. Therefore, the issue of assessing and predicting quality of freshwater ecosystems in the vicinity of NPP is relevant for ensuring radiation and environmental safety. During the studies, we developed a detailed monitoring program; selected observation points for the state of surface water and groundwater at different distances from Rooppur NPP; determined monitoring objects (water, bottom sediments, higher aquatic vegetation, and fish), list of parameters to be studied, observation regulation, methods, and regulatory and technical support. Among the indicators controlled we considered the following ones: physicochemical properties of water and bottom sediments; radionuclide content of components of freshwater ecosystems including natural (40K, 226Ra, and 232Th) and technogenic (90Sr, 137Cs, and 3H) radionuclides; and content of 19 heavy metals, as well as chemical pollutants. Monitoring studies were conducted in 2014–2017, considering climatic peculiarities of the region at different periods of the year. Radionuclides in environmental objects were determined by spectrometry and radiochemistry; heavy metals – by atomic absorption and plasma emission analysis methods. It was established that higher aquatic vegetation in the Padma River is found not in all seasons. In December, it was almost absent. The maximum species diversity was registered in June. Differences between surface water and groundwater in the vicinity of Rooppur NPP were distinguished for several physical and chemical characteristics. Values of drinking water total mineralization and hardness were higher than that of surface water by 2–3 times. This is due to Padma River water composition, the basis of which is meltwater and rainwater. Organic pollutants content in surface water and groundwater was below detection limits or at minimum ones (benzopyrene – less than 0.01 μg·L−1; phenols – 1.3–3.5 μg·L−1; and petroleum products – 0.01–0.043 mg·L−1). Activity concentration of 137Cs in Padma River water did not exceed 0.18 Bq·L−1 (with a mean of 0.07 Bq·L−1) during the observation period. The content of 90Sr was 0.02–0.12 Bq·L−1, and the concentration of 3H varied in the range of 0.8–2.1 Bq·L−1. Mean specific activity of 90Sr in bottom sediments was 0.5–1.8 Bq·kg−1, and 137Cs – 0.8–2.1 Bq·kg−1. Specific activity of 3H in bottom sediments was less than 3 Bq·kg−1, except for 3 samples in 2017 (12–30 Bq·kg−1), which was most likely due to a local pollution. Specific activity of 90Sr in higher aquatic vegetation was 0.4–3.9 Bq·kg−1, and 137Cs – 0.4–1.0 Bq·kg−1. In drinking water, activity concentrations of radionuclides were as follows: 137Cs – 0.03–0.27 Bq·L−1; 90Sr – 0.01–0.16 Bq·L−1; 3H – 0.4–1.2 Bq·L−1. Specific activity of 90Sr in fish was 0.02–1.6 Bq·kg−1.The content of 137Cs in fish was 0.26–0.3 Bq·kg−1. Analysis of monitoring data on heavy metal levels in components of freshwater ecosystems in the vicinity of Rooppur NPP showed that for a number of elements their increased concentrations were recorded, most of which belong to monsoon season. In Padma River surface water, a repeating increase in As, Cd, Mn, and Al concentrations was noted, and in bottom sediments – an increase in As, Cd, Ni, Co, and Zn content, which was associated with anthropogenic impact and increasing runoff of pollutants during monsoon rains. Repeatedly increased As and Mn concentrations were noted in drinking water of Rooppur NPP 30-km zone. In separate samples, there was an increase in Fe and Al content. This might be due to both natural peculiarities of the region (relatively high As content in aquifers) and the state of water supply systems. Obtained results and developed network of radioecological monitoring of freshwater ecosystems would make it possible to register a change in the situation and to identify impact of Rooppur NPP operation on human population and the environment.

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Assessment of natural radioactivity levels and identification of minerals in Brahmaputra (Jamuna) river sand and sediment, Bangladesh

Cited by 16 publications

References 0 publications

Natural Radionuclides Concentrations and Associated Radiation Hazard of Some Building Rocks Used in Taiz City, Yemen

Natural Radionuclides Concentrations and Associated Radiation Hazard of Some Building Rocks Used in Taiz City, Yemen

The Programme and Results of the Radioecological Monitoring of Freshwater Ecosystems in the Vicinity of Rooppur NPP (People’s Republic of Bangladesh)

Комплексный Радиационно-Экологический Мониторинг Водных Экосистем В Регионе Размещения АЭС «Руппур» (Народная Республика Бангладеш)

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