{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T11:50:46Z","timestamp":1791546646405,"version":"4.3.4"},"reference-count":50,"publisher":"Oxford University Press (OUP)","issue":"5","license":[{"start":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T00:00:00Z","timestamp":1789171200000},"content-version":"vor","delay-in-days":11,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,10,9]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>This study examines how naturally occurring radionuclides (40K, 226Ra, 228Ra) transfer from soil into cabbage and spinach grown in Lay Gayint woreda, Amhara Region, Ethiopia. Activity concentrations of radionuclides were measured in irrigation water (n = 15), soil (n = 20), and vegetable samples using HPGe gamma spectrometry. Mean soil concentrations were 625\u2009\u00b1\u2009152 Bq\u00b7kg\u22121 for 40K, 89\u2009\u00b1\u200930 Bq\u00b7kg\u22121 for 226Ra, and 85\u2009\u00b1\u200931 Bq\u00b7kg\u22121 for 228Ra. Transfer factors (TFs) were highest for 40K (cabbage: 0.78\u2009\u00b1\u20090.07; spinach: 1.04\u2009\u00b1\u20090.13), followed by 226Ra (0.12\u2009\u00b1\u20090.01; 0.11\u2009\u00b1\u20090.02) and 228Ra (0.13\u2009\u00b1\u20090.03; 0.09\u2009\u00b1\u20090.01). A strong negative correlation was observed between clay content and TFs (r = \u22120.992 to \u22120.997, P &amp;lt; 0.001), indicating that higher clay content reduces plant uptake. Regression analysis showed that clay content explained over 98% of the variance in TFs. All radiological hazard indices (radium equivalent activity, external hazard index, internal hazard index) remained below global limits. Annual effective doses from vegetable consumption ranged from 0.01\u20130.06 mSv y\u22121 (cabbage) and 0.03\u20130.13 mSv y\u22121 (spinach), while the excess lifetime cancer risk (ELCR) reached up to 3.7 \u00d7 10\u22124. Although annual effective dose values fall within international recommendations, the ELCR is slightly elevated, suggesting minimal but nonnegligible radiological risk for consumers. This study provides key baseline data on radionuclide transfer in Ethiopian agriculture, useful for broader radiological risk assessment and management.<\/jats:p>","DOI":"10.1093\/jrr\/rrag070","type":"journal-article","created":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T11:56:25Z","timestamp":1784807785000},"page":"837-855","source":"Crossref","is-referenced-by-count":0,"title":["Soil-to-plant transfer and radiological risk assessment of naturally occurring radionuclides in vegetables from Lay Gayint, Ethiopia"],"prefix":"10.1093","volume":"67","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8408-2178","authenticated-orcid":false,"given":"Tadesse Abate","family":"Gobaw","sequence":"first","affiliation":[{"name":"Department of Physics, Debre Tabor University , PO Box 272, Debre Tabor ,","place":["Ethiopia"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2026,9,12]]},"reference":[{"key":"2026100906570087600_ref1","volume-title":"IAEA. Handbook of Parameter Values for the Prediction of Radionuclide Transfer in Terrestrial and Freshwater Environments. Technical Reports Series No. 472","author":"International Atomic Energy Agency","year":"2010"},{"key":"2026100906570087600_ref2","first-page":"2008","volume-title":"UNSCEAR. Sources and Effects of Ionizing Radiation. 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EPA\/600\/R-09\/052F","author":"United States Environmental Protection Agency, USEPA","year":"2011"},{"key":"2026100906570087600_ref15","first-page":"87","article-title":"Natural and artificial radioactivity determination in foodstuffs","volume":"133","author":"Desideri","year":"2014","journal-title":"J Environ Radioact"},{"key":"2026100906570087600_ref16","first-page":"18234","article-title":"Soil-to-plant transfer factors for cabbage and spinach in Vietnam","volume":"27","author":"Van","year":"2020","journal-title":"Environ Sci Pollut Res"},{"key":"2026100906570087600_ref17","first-page":"107123","article-title":"Transfer factors for water spinach in Vietnamese aquatic systems","volume":"256","author":"Bui","year":"2024","journal-title":"J Environ Radioact"},{"key":"2026100906570087600_ref18","first-page":"189","article-title":"Radionuclide transfer factors for spinach in Indonesian tropical soils","volume":"62","author":"Nurtjahya","year":"2023","journal-title":"Radiat Environ Biophys"},{"key":"2026100906570087600_ref19","first-page":"234","article-title":"Transfer of natural radionuclides to Amaranthus hybridus in Kwara, Nigeria","volume":"200","author":"Kanni","year":"2024","journal-title":"Radiat Prot Dosimetry"},{"key":"2026100906570087600_ref20","first-page":"012345","article-title":"Baseline transfer factors for soil-vegetation systems in tropical Singapore","volume":"45","author":"Wong","year":"2025","journal-title":"J Radiol Prot"},{"key":"2026100906570087600_ref21","first-page":"763","article-title":"Influence of integrated soil fertilization on the productivity and economic return of garlic (Allium sativum L.) and soil fertility in northwest Ethiopian highlands","volume":"6","author":"Alemayehu","year":"2021","journal-title":"Open Agric"},{"key":"2026100906570087600_ref22","first-page":"4805942","article-title":"Variability and performance evaluation of released linseed varieties for yield and related traits in South Gondar zone, Ethiopia","author":"Amare","year":"2022","journal-title":"Int J Agron"},{"key":"2026100906570087600_ref23","first-page":"2020","volume-title":"Sources, Effects and Risks of Ionizing Radiation: UNSCEAR 2020 Report to the General Assembly","author":"United Nations Scientific Committee on the Effects of Atomic Radiation, UNSCEAR"},{"key":"2026100906570087600_ref24","volume-title":"Radionuclides in the Environment: Influence of Chemical Speciation and Natural Attenuation on Mobility","author":"Gupta","year":"2020"},{"key":"2026100906570087600_ref25","first-page":"721","article-title":"Assessment of radiological health hazard associated with natural radionuclides in soil samples from district Lahore, Pakistan","volume":"99","author":"Tufail","year":"2019","journal-title":"Int J Environ Anal Chem"},{"key":"2026100906570087600_ref26","first-page":"2456","article-title":"Soil radioactivity and radiological risk assessment in agricultural soils: a 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Nigeria","volume":"16","author":"Isinkaye","year":"2021","journal-title":"Environ Nanotechnol Monit Manag"},{"key":"2026100906570087600_ref33","first-page":"1125","article-title":"Assessment of natural radioactivity in soils from Himalayan region and associated radiological hazards","volume":"2021328","author":"Sharma","journal-title":"J Radioanal Nucl Chem"},{"key":"2026100906570087600_ref34","first-page":"e01089","article-title":"Radiological risk assessment of natural radionuclides in soils from basement complex terrains","volume":"15","author":"Aladeniyi","year":"2022","journal-title":"Sci Afr"},{"key":"2026100906570087600_ref36","first-page":"420","volume-title":"Radiation Detection and Measurement","author":"Knoll","year":"2010","edition":"4"},{"key":"2026100906570087600_ref37","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1002\/9780470861981","volume-title":"Practical Gamma-Ray Spectrometry","author":"Gilmore","year":"2008","edition":"2"},{"key":"2026100906570087600_ref38","doi-asserted-by":"crossref","first-page":"586","DOI":"10.1021\/ac60259a007","article-title":"Limits for qualitative detection and quantitative determination. Application to radiochemistry","volume":"40","author":"Currie","year":"1968","journal-title":"Anal Chem"},{"key":"2026100906570087600_ref39","doi-asserted-by":"crossref","first-page":"87","DOI":"10.1097\/00004032-198501000-00007","article-title":"Natural radioactivity of Australian building materials, industrial wastes and by-products","volume":"48","author":"Beretka","year":"1965","journal-title":"Health Phys"},{"key":"2026100906570087600_ref40","first-page":"463","article-title":"On the hazard indices in environmental radioactivity studies","volume":"293","author":"Unak","year":"2012","journal-title":"J Radioanal Nucl Chem"},{"key":"2026100906570087600_ref41","doi-asserted-by":"publisher","DOI":"10.1093\/jrr\/rrag041","article-title":"Setting the radiological baseline: measuring natural radioactivity (226R a, 232Th, 40K) in agricultural soils of Farta District, Ethiopia, and assessing potential health risks","volume":"67","author":"Abate","year":"2026","journal-title":"J Radiat Res"},{"key":"2026100906570087600_ref42","doi-asserted-by":"crossref","first-page":"S58","DOI":"10.1055\/s-0044-1796644","article-title":"Basic statistics for radiologists: part 1-basic data interpretation and inferential statistics","volume":"35","author":"Kumar","year":"2025","journal-title":"Indian J Radiol Imaging"},{"key":"2026100906570087600_ref43","doi-asserted-by":"crossref","first-page":"49","DOI":"10.1016\/j.diii.2024.11.003","article-title":"An introductory guide to statistics for the radiologist","volume":"106","author":"O\u2019Shaughnessy","year":"2025","journal-title":"Diagn Interv Imaging"},{"key":"2026100906570087600_ref44","volume-title":"Experimental Design and Analysis","author":"Seltman","year":"2018"},{"key":"2026100906570087600_ref45","doi-asserted-by":"crossref","first-page":"20","DOI":"10.1097\/HP.0000000000001994","article-title":"Methods to derive uncertainty intervals for lifetime risks for lung cancer related to occupational radon exposure","volume":"130","author":"Sommer","year":"2026","journal-title":"Health Phys"},{"key":"2026100906570087600_ref46","doi-asserted-by":"crossref","first-page":"1371","DOI":"10.1016\/j.jenvrad.2008.01.008","article-title":"The ERICA tool","volume":"99","author":"Brown","year":"2008","journal-title":"J Environ Radioact"},{"key":"2026100906570087600_ref47","first-page":"1123","article-title":"Transfer factors for leafy crops in Vietnam","volume":"324","author":"Thien","year":"2020","journal-title":"J Radioanal Nucl Chem"},{"key":"2026100906570087600_ref48","first-page":"2452","article-title":"Dietary exposure to radioactive contaminants in Lebanon","volume":"46","author":"Nasreddine","year":"2008","journal-title":"Food Chem Toxicol"},{"key":"2026100906570087600_ref49","volume-title":"Sources, Effects and Risks of Ionizing Radiation. 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