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Tremblay-Cantin JC, Martin L, Proulx M, Priest ND, Larivière D. Levels of naturally occurring radioisotopes in local and imported bottled drinking water available in Québec City, Canada. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2024; 274:107411. [PMID: 38471302 DOI: 10.1016/j.jenvrad.2024.107411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/20/2024] [Accepted: 02/27/2024] [Indexed: 03/14/2024]
Abstract
Consumption of local and imported bottled water in Canada has greatly increased during the past three decades. While the presence of natural radioactivity is often overlooked when dealing with the water quality of these bottled products, it could contribute substantially to the uptake of radionuclides especially when sourced from regions with higher radioactivity levels compared to where it is consumed. In this study, the activity of several naturally occurring radionuclides (i.e., 210Po, 226,228Ra, 230,232Th, 234,235,238U) were measured in bottled water available in Québec, Canada after sample pretreatment and analysis by either radiometric or mass spectrometry approaches. 230,232Th and 228Ra concentrations were below minimum detectable activity levels in all samples tested. Analytical results for 234U, 235U, 238U, and 226Ra showed concentrations that ranged from 0.38 to 115 mBq/L, (2.2-313) x 10-2 mBq/L, 0.48-58.4 mBq/L, and 1.1-550 mBq/L, respectively. 210Po was detected in only 5 samples and its activity ranged from 2 to 26 mBq/L. To determine variability in activity within brands, the same brands of bottled water were purchased during two consecutive years and analyzed. The possible radiological impact of the consumption of these types of water was assessed based on different drinking habit scenarios. Some of the imported water brands showed higher activity concentrations than local sources or tap water, suggesting that individuals drinking predominantly imported bottled water would receive a higher radiation dose than those who drink mainly local water.
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Affiliation(s)
| | - Laurie Martin
- Radioecology Laboratory, Chemistry Department, Laval University, 1045 Avenue de la Médecine, Québec, QC, Canada, G1V 0A6
| | - Myriame Proulx
- Radioecology Laboratory, Chemistry Department, Laval University, 1045 Avenue de la Médecine, Québec, QC, Canada, G1V 0A6
| | - Nicholas D Priest
- Radioecology Laboratory, Chemistry Department, Laval University, 1045 Avenue de la Médecine, Québec, QC, Canada, G1V 0A6
| | - Dominic Larivière
- Radioecology Laboratory, Chemistry Department, Laval University, 1045 Avenue de la Médecine, Québec, QC, Canada, G1V 0A6.
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Bazza A, Rhiyourhi M, Marhou A, Hamal M. Assessment of natural radioactivity in Moroccan bottled drinking waters using gamma spectrometry. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1307. [PMID: 37831213 DOI: 10.1007/s10661-023-11933-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 09/18/2023] [Indexed: 10/14/2023]
Abstract
Radioactive elements and their impact on the environment and the food chain, including humans, are a matter of major concern, for which appropriate investigations should be performed. The priority is to examine the concentration of radioactive substances in mineral and bottled spring water. This task aims to analyze the quality of 12 conditioned mineral waters by determining their main radionuclides concentrations, such as 238U, 232Th, and 40K. The identification and the quantification of these radionuclides are carried out by their progeny (except the 40K) by using a NaI(Tl) detector coupled with a multichannel analyzer (MCA) and connected to a computer. The activity measured in all samples varied from 0.95 to 3.38 mBq.L-1 with an average of 1.94 mBq.L-1; from 1.55 to 3.56 mBq.L-1 with an average of 2.46 mBq.L-1; and from 200.68 to 269.19 mBq.L-1 with an average of 236.6 mBq.L-1, for 238U, 232Th, and 40K, respectively. To compare the combined radiological effects of radionuclides present in water, a particular factor Ra(eq) is used. This study showed that the maximum value of Ra(eq) is 27.54 mBq.L-1, which is far below the activity limit of 370 mBq.year-1 set by the Organization of Economics and Development (OECD). Concerning the effective annual dose, the following maximums were measured: 1.61 μSv.year-1, 1.133 μSv.year-1, and 0.925 μSv.year-1 for infants, children, and adults, respectively. These values are even smaller than the dose recommended by the WHO which is 100 μSv.year-1. Regarding the excess lifetime cancer risk index, a maximum of 5.63 × 10-6 is found. This index value is still less than that proposed by James, namely 2.5 × 10-3. Thus, the quality of the studied samples respects the radiological international safety and health limits.
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Affiliation(s)
- Abdelkarim Bazza
- Laboratory of Physics of Matter and Radiations in Faculty of Sciences, Mohammed First University, Oujda, Morocco.
| | - Mohammed Rhiyourhi
- Laboratory of Physics of Matter and Radiations in Faculty of Sciences, Mohammed First University, Oujda, Morocco
| | - Ayoub Marhou
- Laboratory of Physics of Matter and Radiations in Faculty of Sciences, Mohammed First University, Oujda, Morocco
| | - Mohammed Hamal
- Laboratory of Physics of Matter and Radiations in Faculty of Sciences, Mohammed First University, Oujda, Morocco
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Adeola AO, Iwuozor KO, Akpomie KG, Adegoke KA, Oyedotun KO, Ighalo JO, Amaku JF, Olisah C, Conradie J. Advances in the management of radioactive wastes and radionuclide contamination in environmental compartments: a review. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2023; 45:2663-2689. [PMID: 36097208 DOI: 10.1007/s10653-022-01378-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 08/22/2022] [Indexed: 06/01/2023]
Abstract
Several anthropogenic activities produce radioactive materials into the environment. According to reports, exposure to high concentrations of radioactive elements such as potassium (40K), uranium (238U and 235U), and thorium (232Th) poses serious health concerns. The scarcity of reviews addressing the occurrence/sources, distribution, and remedial solutions of radioactive contamination in the ecosystems has fueled data collection for this bibliometric survey. In rivers and potable water, reports show that several parts of Europe and Asia have recorded radionuclide concentrations much higher than the permissible level of 1 Bq/L. According to various investigations, activity concentrations of gamma-emitting radioactive elements discovered in soils are higher than the global average crustal values, especially around mining activities. Adsorption technique is the most prevalent remedial method for decontaminating radiochemically polluted sites. However, there is a need to investigate integrated approaches/combination techniques. Although complete radionuclide decontamination utilizing the various technologies is feasible, future research should focus on cost-effectiveness, waste minimization, sustainability, and rapid radionuclide decontamination. Radioactive materials can be harnessed as fuel for nuclear power generation to meet worldwide energy demand. However, proper infrastructure must be put in place to prevent catastrophic disasters.
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Affiliation(s)
- A O Adeola
- Department of Chemical Sciences, Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria.
- Department of Chemical Sciences, University of Johannesburg, Doornfontein, 2028, South Africa.
| | - K O Iwuozor
- Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka, Nigeria
| | - K G Akpomie
- Department of Chemistry, University of the Free State, Bloemfontein, 9300, South Africa
- Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Nigeria
| | - K A Adegoke
- Department of Chemical Sciences, University of Johannesburg, Doornfontein, 2028, South Africa
| | - K O Oyedotun
- Department of Physics, Institute of Applied Materials, SARChI Chair in Carbon Technology and Materials, University of Pretoria, Pretoria, 0028, South Africa
| | - J O Ighalo
- Department of Chemical Engineering, Nnamdi Azikiwe University, P.M.B. 5025, Awka, Nigeria
| | - J F Amaku
- Department of Chemistry, Michael Okpara University of Agriculture, Umudike, Nigeria
| | - C Olisah
- Department of Botany, Institute for Coastal and Marine Research (CMR), Nelson Mandela University, Port Elizabeth, South Africa
| | - J Conradie
- Department of Chemistry, University of the Free State, Bloemfontein, 9300, South Africa
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Kebir H. Natural radionuclide concentrations in drinking water (well and spring mineral waters) samples from Bordj-Bouarreridj region, east Algeria. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-08126-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Semerjian L, Alrajaby H, Naaz N, Kasfah R, Dalah EZ, Waheed E, Nabulssi A, Metwally WA. Age-dependent effective ingestion dose estimations and lifetime risk assessment for selected radionuclides ( 40K and 3H) in bottled waters marketed in United Arab Emirates. CHEMOSPHERE 2020; 249:126114. [PMID: 32044611 DOI: 10.1016/j.chemosphere.2020.126114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 02/01/2020] [Accepted: 02/03/2020] [Indexed: 06/10/2023]
Abstract
Monitoring drinking water, including bottled water, is imperative to safeguarding public health especially where bottled water consumption is high like in the United Arab Emirates (UAE). In this study, radionuclide activity levels of Tritium (3H) and Potassium (40K) were assessed in various brands of bottled water marketed in UAE. Activity level data was used to calculate the annual effective doses (Ed) for different age groups, and the excess lifetime cancer risk (ELCR) for adult males and females in the UAE population. Activity levels for both radionuclides were below the allowable maximum guideline values specified by local and international standards. Calculated total age dependent ingestion doses revealed that adults and lactation age groups received the highest effective ingestion doses. Adult males exhibited a higher ELCR for both isotopes, compared to females. Nonetheless, total radioactive dose for each water brand (0.91-1.47 μSv/yr) as well as for each population group were well below the recommended annual reference dose level of 100 μSv set by World Health Organization. Therefore, bottled water in the UAE is safe from the radiological aspect for investigated radionuclides, and poses no significant radiological exposure and health risk to the public.
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Affiliation(s)
- Lucy Semerjian
- Department of Environmental Health Sciences, College of Health Sciences, University of Sharjah, P.O.Box, 27272, Sharjah, United Arab Emirates.
| | - Hadya Alrajaby
- Department of Environmental Health Sciences, College of Health Sciences, University of Sharjah, P.O.Box, 27272, Sharjah, United Arab Emirates
| | - Nimra Naaz
- Department of Environmental Health Sciences, College of Health Sciences, University of Sharjah, P.O.Box, 27272, Sharjah, United Arab Emirates
| | - Rim Kasfah
- Department of Environmental Health Sciences, College of Health Sciences, University of Sharjah, P.O.Box, 27272, Sharjah, United Arab Emirates
| | - Entesar Z Dalah
- Department of Medical Diagnostic Imaging, College of Health Sciences, University of Sharjah, P.O.Box, 27272, Sharjah, United Arab Emirates
| | - Eithar Waheed
- Department of Mechanical and Nuclear Engineering, College of Engineering, University of Sharjah, P.O.Box 27272, Sharjah, United Arab Emirates
| | - Amal Nabulssi
- Department of Mechanical and Nuclear Engineering, College of Engineering, University of Sharjah, P.O.Box 27272, Sharjah, United Arab Emirates
| | - Walid A Metwally
- Department of Mechanical and Nuclear Engineering, College of Engineering, University of Sharjah, P.O.Box 27272, Sharjah, United Arab Emirates
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Determination of Natural Radionuclides for Water Resources on the West Bank of the Nile River, Assiut Governorate, Egypt. WATER 2019. [DOI: 10.3390/w11020311] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Estimations of natural radioactivity levels were carried out for water (surface and groundwater) samples collected from the west bank of the Nile River in Assiut Governorate, Egypt. The activity concentrations in the water samples ranged from 19.20 ± 2.40 to 492.26 ± 71.52 mBq/L, from 15.58 ± 2.62 to 351.39 ± 66.13 mBq/L, and from 50.31 ± 5.58 to 2255.03 ± 249.42 mBq/L for 226Ra, 232Th, and 40K, respectively. In this work, the recorded activity concentrations have been organized statistically using a dendrogram cluster and a principal coordinate analysis. In view of the groupings of radionuclide activity, the average annual effective doses through ingestion for adults, children, and infants, despite the responsibility of each explicit radionuclide to the total dose, were assessed and debated. Children had the most important measurement calculations, making them the most regarded mass gathering. All estimations for each different water type, as well as for each individual population group, scored well under the recommended reference value of 0.1 mSv resulting from a one year’s intake of drinking water in accordance with the recommendations of the European Commission (EC) in 1998.
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Determination of the activity and the average annual dose of absorbed uranium and polonium in drinking water from Warsaw. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-6351-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Van Duong H, Nguyen CD, Nowak J, Kovacs T, Hoang QA. Uranium and radium isotopes in some selected thermal, surface and bottled waters in Vietnam. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-6317-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Uranium, polonium and thorium in infant formulas (powder milk) and assessment of a cumulative ingestion dose. J Food Compost Anal 2017. [DOI: 10.1016/j.jfca.2017.09.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Radiation dose to the Malaysian populace via the consumption of bottled mineral water. Radiat Phys Chem Oxf Engl 1993 2017. [DOI: 10.1016/j.radphyschem.2017.01.018] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Determination of 210Pb, 210Po, 226Ra, 228Ra and uranium isotopes in drinking water in order to comply with the requirements of the EU ‘Drinking Water Directive. Appl Radiat Isot 2016; 109:465-9. [PMID: 27358946 DOI: 10.1016/j.apradiso.2015.11.076] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The European Union published in 2013 a new Drinking Water Directive with stricter requirements for measuring natural radioactivity. In order to adhere to this, a method for sequential separation of 210Pb, 210Po, 238U and 234U in drinking water was applied using UTEVA® and Sr resins. Polonium-210, 238U and 234U were quantified using alpha-particle spectrometry and 210Pb using liquid scintillation counting. Radium-226 and 228Ra were determined using 3M Empore Radium RAD Disks, and their quantification was done using a Quantulus™ 1220 liquid scintillation counter.
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Ajay K, Manpreet K, Rohit M, Sumit S, Rosaline M, Singh KP, Bajwa BS. Quantification and assessment of health risk due to ingestion of uranium in groundwater of Jammu district, Jammu & Kashmir, India. J Radioanal Nucl Chem 2016. [DOI: 10.1007/s10967-016-4933-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kubalek D, Serša G, Štrok M, Benedik L, Jeran Z. Radioactivity of cigarettes and the importance of (210)Po and thorium isotopes for radiation dose assessment due to smoking. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2016; 155-156:97-104. [PMID: 26942842 DOI: 10.1016/j.jenvrad.2016.02.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 02/03/2016] [Accepted: 02/16/2016] [Indexed: 06/05/2023]
Abstract
Tobacco and tobacco smoke are very complex mixtures. In addition to various chemical and organic compounds they also contain natural radioactive elements (radionuclides). In this work, the natural radionuclide activity concentrations ((234)U, (238)U, (228)Th, (230)Th, (232)Th, (226)Ra, (210)Pb and (210)Po) of nine different cigarette samples available on the Slovenian market are reported. In addition to (210)Po, the transfer of thorium isotopes from a cigarette to a smoker's body and lungs have been determined for the first time. Cigarette smoke and exhaled air from smokers' lungs were collected from volunteer smokers (C-4 brand) to determinate what quantity of (210)Po and thorium isotopes is transferred from the tobacco to the smoker's lungs. Cigarette ash and smoked filters were also collected and analysed. Among the determined isotopes, (210)Pb and (210)Po showed the highest activity concentrations. During the smoking of one cigarette approximately 22% of (210)Po (and presumably its predecessor (210)Pb), 0.6% of (228)Th, 24% of (230)Th, and 31% of (232)Th are transferred from the cigarette and retained in the smoker's body. The estimated annual effective dose for smokers is 61 μSv/year from (210)Po; 9 μSv/year from (210)Pb; 6 μSv/year from (228)Th; 47 μSv/year from (230)Th, and 37 μSv/year from (232)Th. These results show the importance of thorium isotopes in contributing to the annual effective dose for smoking.
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Affiliation(s)
- Davor Kubalek
- Jožef Stefan Institute, Jamova 39, SI, 1000 Ljubljana, Slovenia
| | - Gregor Serša
- Institute of Oncology, Department of Experimental Oncology, Ljubljana, Slovenia
| | - Marko Štrok
- Jožef Stefan Institute, Jamova 39, SI, 1000 Ljubljana, Slovenia
| | | | - Zvonka Jeran
- Jožef Stefan Institute, Jamova 39, SI, 1000 Ljubljana, Slovenia.
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(210)Bi - from interference to advantage in (210)Pb determination with liquid scintillation counter. Appl Radiat Isot 2016; 109:296-300. [PMID: 26717793 DOI: 10.1016/j.apradiso.2015.12.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 12/17/2015] [Indexed: 11/22/2022]
Abstract
A novel method for determination of (210)Pb activity concentration using a liquid scintillation counter (LSC) in environmental samples is presented. After radiochemical separation of (210)Pb on Eichrom Sr Resin column, the decay product (210)Bi starts to in-grow and interfere with the (210)Pb during measurement with LSC. Instead of eliminating this interference, a novel method utilises (210)Bi in-growth to improve the detection efficiency and subsequently to lower the minimum detectable activity (MDA). This allows for substantial reduction of the MDA compared to conventional methods.
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Natural radionuclides content and radioactive series disequilibrium in drinking waters from Balkans region. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3858-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Rožmarić M, Rogić M, Benedik L, Barišić D, Planinšek P. Radiological characterization of tap waters in Croatia and the age dependent dose assessment. CHEMOSPHERE 2014; 111:272-277. [PMID: 24997928 DOI: 10.1016/j.chemosphere.2014.04.044] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 03/19/2014] [Accepted: 04/12/2014] [Indexed: 06/03/2023]
Abstract
Activity concentrations of (234)U, (238)U, (226)Ra, (228)Ra, (210)Po and (210)Pb in tap waters, originating from various geological regions of Croatia, were determined. Activity concentrations of measured radionuclides are in general decreasing in this order: (238)U≈(234)U>(228)Ra≈(210)Pb>(226)Ra≈(210)Po. Based on the radionuclide activity concentrations average total annual internal doses for infants, children and adults, as well as contribution of each particular radionuclide to total dose, were assessed and discussed. The highest doses were calculated for infants, which makes them the most critical group of population. All values for each population group were well below the recommended reference dose level (RDL) of 0.1mSv from one year's consumption of drinking water according to European Commission recommendations from 1998. Contribution of each particular radionuclide to total doses varied among different age groups but for each group the lowest contribution was found for (226)Ra and the highest for (228)Ra.
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Affiliation(s)
- Martina Rožmarić
- Rudjer Boskovic Institute, Bijenicka cesta 54, 10 000 Zagreb, Croatia; Environment Laboratories, International Atomic Energy Agency, 4 Quai Antoine 1er, MC 98000, Monaco.
| | - Matea Rogić
- Rudjer Boskovic Institute, Bijenicka cesta 54, 10 000 Zagreb, Croatia
| | | | - Delko Barišić
- Rudjer Boskovic Institute, Bijenicka cesta 54, 10 000 Zagreb, Croatia
| | - Petra Planinšek
- Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
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Calin MR, Ion AC, Radulescu I. Evaluation of quality parameters and of natural radionuclides concentrations in natural mineral water in Romania. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3401-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Erden PE, Dirican A, Seferinoğlu M, Yeltepe E, Şahin NK. 238U, 234U and 226Ra concentrations in mineral waters and their contribution to the annual committed effective dose in Turkey. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3105-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mehdizadeh S, Faghihi R, Sina S, Derakhshan S. Measurements of natural radioactivity concentration in drinking water samples of Shiraz city and springs of the Fars province, Iran, and dose estimation. RADIATION PROTECTION DOSIMETRY 2013; 157:112-119. [PMID: 23650643 DOI: 10.1093/rpd/nct114] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The Fars province is located in the south-west region of Iran where different nuclear sites has been established, such as Bushehr Nuclear Power Plant. In this research, 92 water samples from the water supplies of Shiraz city and springs of the Fars province were investigated with regard to the concentrations of natural radioactive elements, total uranium, (226)Ra, gross alpha and gross beta. (226)Ra concentration was determined by the (222)Rn emanation method. To measure the total uranium concentration, a laser fluorimetry analyzer (UA-3) was used. The mean concentration of (226)Ra in Shiraz's water resources was 23.9 mBq l(-1), while 93 % of spring waters have a concentration <2 mBq l(-1). The results of uranium concentration measurements show the mean concentrations of 7.6 and 6 μg l(-1) in the water of Shiraz and springs of Fars, respectively. The gross alpha and beta concentrations measured by the evaporation method were lower than the limit of detection of the measuring instruments used in this survey. The mean annual effective doses of infants, children and adults from (238)U and (226)Ra content of Shiraz's water and spring waters were estimated. According to the results of this study, the activity concentration in water samples were below the maximum permissible concentrations determined by the World Health Organization and the US Environmental Protection Agency. Finally, the correlation between (226)Ra and total U activity concentrations and geochemical properties of water samples, i.e. pH, total dissolve solids and SO4(-2), were estimated.
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Shahbazi-Gahrouei D, Gholami M, Setayandeh S. A review on natural background radiation. Adv Biomed Res 2013; 2:65. [PMID: 24223380 PMCID: PMC3814895 DOI: 10.4103/2277-9175.115821] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2012] [Accepted: 11/20/2012] [Indexed: 11/21/2022] Open
Abstract
The world is naturally radioactive and approximately 82% of human-absorbed radiation doses, which are out of control, arise from natural sources such as cosmic, terrestrial, and exposure from inhalation or intake radiation sources. In recent years, several international studies have been carried out, which have reported different values regarding the effect of background radiation on human health. Gamma radiation emitted from natural sources (background radiation) is largely due to primordial radionuclides, mainly 232Th and 238U series, and their decay products, as well as 40K, which exist at trace levels in the earth's crust. Their concentrations in soil, sands, and rocks depend on the local geology of each region in the world. Naturally occurring radioactive materials generally contain terrestrial-origin radionuclides, left over since the creation of the earth. In addition, the existence of some springs and quarries increases the dose rate of background radiation in some regions that are known as high level background radiation regions. The type of building materials used in houses can also affect the dose rate of background radiations. The present review article was carried out to consider all of the natural radiations, including cosmic, terrestrial, and food radiation.
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Affiliation(s)
- Daryoush Shahbazi-Gahrouei
- Department of Medical Physics and Medical Engineering, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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Natural radionuclides in drinking waters in Serbia. Appl Radiat Isot 2012; 70:2703-10. [DOI: 10.1016/j.apradiso.2012.08.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 06/22/2012] [Accepted: 08/21/2012] [Indexed: 11/17/2022]
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