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Zheng Q, Shi C, Xie Y, Yin L, Ji Y. Determination of 90Sr and 210Pb in food samples by liquid scintillation counting after sequential separation with an extraction chromatographic column. Food Chem 2024; 450:139266. [PMID: 38653045 DOI: 10.1016/j.foodchem.2024.139266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/23/2024] [Accepted: 04/03/2024] [Indexed: 04/25/2024]
Abstract
90Sr and 210Pb are considered to be key radionuclides in internal exposure resulting from dietary intake, however, the established methods employed for their detection are time-comsuming. A method for the sequential separation of 90Sr and 210Pb using a Sr·spec resin by LSC measurement is developed, which is highly suitable for food safety monitoring as its minimal sample requirements. The sequential separation of Sr and Pb from the sample was using 0.05 mol/L HNO3 and 0.05 mol/L C6H5O7(NH4)3. The chemical recoveries of Sr and Pb measured using ICP-OES were 72-83% and 80-88%, respectively. The minimum detectable activities of 90Sr and 210Pb in the food sample were 36.2 mBq/kg and 28.6 mBq/kg, respectively, obtained from a 0.1 kg fresh sample and 300 min counting time. The method was validated using reference materials and compared with other methods. The feasibility of the developed method for other highly complex food matrices needs further investigation.
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Affiliation(s)
- Qishan Zheng
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China
| | - Cen Shi
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China
| | - Yuhan Xie
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China
| | - Liangliang Yin
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China
| | - Yanqin Ji
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China.
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Wang J, Liu Y, Wu B, Meng X, Wang Y, Cheng J. Theoretical Prediction of the 210 Pb Burden in the Skeleton from Radon Exposure and Other Intake Routes. HEALTH PHYSICS 2024; 127:287-297. [PMID: 38552207 DOI: 10.1097/hp.0000000000001807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/30/2024]
Abstract
ABSTRACT The 210 Pb burden in the skeleton is a measurement value suitable for the estimation of the cumulative exposure to radon, based on which the resultant risk of lung cancer can be derived. There have been a handful of studies that successfully measured 210 Pb activity in the bones of volunteers who had chronic exposure to high concentrations of radon occupationally or in their residences. However, the quantitative relationship between measured 210 Pb activity and radon exposure remains elusive. Herein, we investigate the origin of the skeletal burden by employing the biokinetic model recommended by the International Commission on Radiological Protection and modeling various routes of intake. First, the baseline 210 Pb burden for the general public regarding eating assorted foodstuffs and breathing normal air is obtained. It is found that this baseline burden ranges between 7.3 to 46.5 Bq for a 50-y-old (male) person, which characterizes a large variance due to the uncertainty of each route of intake. Next, we concentrate on radon exposure by referring to two experimental studies where the accounts of exposure and the measured 210 Pb burden for each volunteer are documented in detail. From comparing our prediction and measurements, it is found that exposure to higher concentration of radon is the most significant source of 210 Pb intake, and the quantitative differences can be reasonably explained by the uncertainty resulting from regular intake routes. This study establishes the theoretical foundation for assessing one's risk of lung cancer due to radon exposure by measuring the 210 Pb burden in bones.
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Affiliation(s)
- Jing Wang
- College of Nuclear Science and Technology, Beijing Normal University, Joint Laboratory of Jinping Ultra-low Radiation Background Measurement of Ministry of Ecology and Environment, Beijing Normal University, Key Laboratory of Beam Technology of Ministry of Education, Beijing, 100875, China
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Johansen MP, Carpenter JG, Charmasson S, Gwynn JP, Mc Ginnity P, Mori A, Orr B, Simon-Cornu M, Osvath I. Seafood dose parameters: Updating 210Po retention factors for cooking, decay loss and mariculture. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2023; 268-269:107243. [PMID: 37515860 DOI: 10.1016/j.jenvrad.2023.107243] [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: 03/30/2023] [Revised: 06/13/2023] [Accepted: 07/14/2023] [Indexed: 07/31/2023]
Abstract
210Po has been identified as one of the main contributors to ingestion doses to humans, particularly from the consumption of seafood. The amount of 210Po activity concentration data for various types of seafood has increased greatly in recent times. However, to provide realistic seafood dose assessments, most 210Po data requires correction to account for losses that can occur before the seafood is actually consumed. Here we develop generic correction factors for the main processes associated with reduction of 210Po in seafood - leaching during cooking, radioactive decay between harvest and consumption, and sourcing from mariculture versus wild-caught. When seafood is cooked, the overall mean fraction of 210Po retained is 0.74 for all cooking and seafood types, with the means for various seafood types and cooking categories ranging from 0.56 to 1.03. When considering radioactive decay during the period between harvest and consumption, the overall mean fraction remaining is 0.81 across all seafood preservation/packaging types, with estimates ranging from 0.50 (canned seafood) to 0.98 (fresh seafood). Regarding mariculture influence, the available limited data suggest marine fish and crustaceans raised with processed feed have about one order of magnitude lower (×0.10) 210Po muscle content than wild-caught seafood of the same or similar species, although this ratio varies. Overall, this study concludes that 210Po activity concentrations in seafood at the time of ingestion may be reduced to only about 55% compared to when it was harvested. Therefore, correction factors must be applied to any data derived from environmental monitoring in order to achieve realistic dose estimates. The data also suggest lower 210Po ingestion doses for consumers who routinely favour cooked, long shelf-life and farmed fish/crustaceans. However, more data is needed in some categories, especially for cooking of molluscs and seaweed, and for the 210Po content in all farmed seafood.
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Affiliation(s)
- Mathew P Johansen
- Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, 2232 NSW, Australia.
| | - Julia G Carpenter
- Australian Radiation Protection and Nuclear Safety Agency (ARPANSA), Yallambie, VIC, 3085, Australia.
| | - Sabine Charmasson
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, PSE-ENV/SRTE/LRTA, 13115, Saint Paul Lez Durance, France.
| | - Justin P Gwynn
- Norwegian Radiation and Nuclear Safety Authority, The Fram Centre, Tromsø, Norway.
| | - Paul Mc Ginnity
- IAEA Marine Environment Laboratories, 4 Quai Antoine 1er, 98000 Monaco.
| | - Airi Mori
- Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki, 319-1195, Japan.
| | - Blake Orr
- Australian Radiation Protection and Nuclear Safety Agency (ARPANSA), Yallambie, VIC, 3085, Australia.
| | - Marie Simon-Cornu
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Santé Environnement, PSE-ENV/SEREN, 13115 Saint Paul Lez Durance, France.
| | - Iolanda Osvath
- IAEA Marine Environment Laboratories, 4 Quai Antoine 1er, 98000 Monaco.
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Lin J, Ni J, Ji J, Huang D, Zhong Q, Yu T. 210Po and 210Pb in tissues of fish from the southern coast of China and the contribution of 210Po to the radiation dose. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08693-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Sabu KSP, Kavitha PK, Shareef YN, Khan MF. Evaluation of the radiological dose due to 210Po in commercial clupeid fish collected in the near-shore environment of the high background natural radiation area (HBNRA) on the southwest coast of India. MARINE POLLUTION BULLETIN 2022; 182:114034. [PMID: 35981447 DOI: 10.1016/j.marpolbul.2022.114034] [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: 04/16/2022] [Revised: 08/03/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
In this study, we quantified the tissue concentration of 210Po in a variety of commercial sardine fish species of the family Clupeidae from an area of high background natural radiation area on the southwest coast of India. The smooth belly sardine Amblygaster leiogaster had the lowest 210Po concentration in its muscle (45.6 ± 7.9 Bq kg-1 fresh), while the goldstripe sardine Sardinella gibbosa had the highest (103.4 ± 10.1 Bq kg-1 fresh). The Annual Committed Effective Dose (ACED) of fried sardine and sardine curry were 134.3-304.3 μSv y-1 and 226.6-513.5 μSv y-1, respectively. Of the 210Po loss, 20 % was due to frying and 10 % to preparing sardine curry. The effective dose was found to be globally comparable and well below the world limit. Consumption of sardines containing 210Po would not pose a health hazard to the residents of Manavalakurchi.
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Affiliation(s)
- Karunakaran Sreekumar Praveen Sabu
- Department of Zoology, Thiru Kolanjiappar Government Arts College, (Affiliated to Thiruvalluvar University, Serkadu, Vellore), Virudhachalam, 606001 Cuddalore District, Tamil Nadu, India
| | - Pappireddipatty Kandasamy Kavitha
- Post Graduate and Research Department of Zoology, C. Abdul Hakeem College (Autonomous - Affiliated to Thiruvalluvar University, Serkadu, Vellore), Hakeem Nagar, Melvisharam, 632509 Ranipet District, Tamil Nadu, India
| | - Yaseen Nawaz Shareef
- Post Graduate and Research Department of Zoology, C. Abdul Hakeem College (Autonomous - Affiliated to Thiruvalluvar University, Serkadu, Vellore), Hakeem Nagar, Melvisharam, 632509 Ranipet District, Tamil Nadu, India
| | - Mohan Feroz Khan
- Post Graduate and Research Department of Zoology, C. Abdul Hakeem College (Autonomous - Affiliated to Thiruvalluvar University, Serkadu, Vellore), Hakeem Nagar, Melvisharam, 632509 Ranipet District, Tamil Nadu, India.
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