Estimating the transfer factor of natural radionuclides from soil to food chain pathways at a farmland in the southwestern Nigeria

Estimating the transfer factor of natural radionuclides from soil to food chain pathways at a farmland in the southwestern Nigeria | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Estimating the transfer factor of natural radionuclides from soil to food chain pathways at a farmland in the southwestern Nigeria Oladapo O. O., Lawal M. K., Ajiboye O., Aremu A. A., Oni E. A., and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5109672/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract The transfer factors of naturally existing radionuclides (NRs) from soil to food chain pathways on a farmland in southwestern Nigeria were estimated by measuring the activity concentrations of NRs in 20 soil samples taken from the study site using sodium iodide NaI(Ti) spectrometer detector. According to the results, the mean activity concentrations of 238 U, 232 Th, and 40 K were 12.53 ± 4.66 Bq/kg, 20.76 ± 7.51 Bq/kg, and 310.79 ± 85.91Bq/kg, respectively. These results fell below the recommended upper limit of NRs in soil. The calculated outdoor absorbed dose rate (D R ), radium equivalent activity (R e ) and gamma representative index (\(\:{\text{I}}_{{\gamma\:}}\)) were 32.02nGyh − 1 , 66.15 Bq/kg and 0.5 Bq/kg respectively. The D R, R e and I γ were within the recommended range. The activity concentrations of 238 U and 232 Th in the vegetation and in the meat and milk produced by grazing animals on the farm were estimated. 238 U and 232 Th were estimated to be present in vegetation at concentrations of 0.2572 and 1.9049 (Bq/kg), respectively; in cow milk produced from cow grazing at the research site, the concentrations were 2.408 and 1.714 (Bq/L) and; in cow meat, they were 0.802 and 0.175 (Bq/kg). These values are considerably safe and may not pose significant health concerns when food processed at the study site is consumed. The calculated transfer factors from soil into vegetation for 238 U and 232 Th were 0.02 and 0.0903 respectively while those from soil into cow milk were 1.902e − 4 and 8.256e − 6 , respectively; those from soil into cow meat were 6.4e − 5 and 8.43e − 7 respectively. Nuclear Physics Absorbed dose rate Natural radionuclides Radiation hazard index Radiological health risk Radium equivalent activity and Transfer factor Full Text Additional Declarations The authors declare no competing interests. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-5109672","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":355729607,"identity":"85d0fa1c-d768-4926-8d12-46bb281caab3","order_by":0,"name":"Oladapo O. 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According to the results, the mean activity concentrations of \u003csup\u003e238\u003c/sup\u003eU, \u003csup\u003e232\u003c/sup\u003eTh, and \u003csup\u003e40\u003c/sup\u003eK were 12.53 ± 4.66 Bq/kg, 20.76 ± 7.51 Bq/kg, and 310.79 ± 85.91Bq/kg, respectively. These results fell below the recommended upper limit of NRs in soil. The calculated outdoor absorbed dose rate (D\u003csub\u003eR\u003c/sub\u003e), radium equivalent activity (R\u003csub\u003ee\u003c/sub\u003e) and gamma representative index (\\(\\:{\\text{I}}_{{\\gamma\\:}}\\)) were 32.02nGyh\u003csup\u003e− 1\u003c/sup\u003e, 66.15 Bq/kg and 0.5 Bq/kg respectively. The D\u003csub\u003eR,\u003c/sub\u003e R\u003csub\u003ee\u003c/sub\u003e and I\u003csub\u003eγ\u003c/sub\u003e were within the recommended range. The activity concentrations of \u003csup\u003e238\u003c/sup\u003eU and \u003csup\u003e232\u003c/sup\u003eTh in the vegetation and in the meat and milk produced by grazing animals on the farm were estimated. \u003csup\u003e238\u003c/sup\u003eU and \u003csup\u003e232\u003c/sup\u003eTh were estimated to be present in vegetation at concentrations of 0.2572 and 1.9049 (Bq/kg), respectively; in cow milk produced from cow grazing at the research site, the concentrations were 2.408 and 1.714 (Bq/L) and; in cow meat, they were 0.802 and 0.175 (Bq/kg). These values are considerably safe and may not pose significant health concerns when food processed at the study site is consumed. The calculated transfer factors from soil into vegetation for \u003csup\u003e238\u003c/sup\u003eU and \u003csup\u003e232\u003c/sup\u003eTh were 0.02 and 0.0903 respectively while those from soil into cow milk were 1.902e\u003csup\u003e− 4\u003c/sup\u003e and 8.256e\u003csup\u003e− 6\u003c/sup\u003e, respectively; those from soil into cow meat were 6.4e\u003csup\u003e− 5\u003c/sup\u003e and 8.43e\u003csup\u003e− 7\u003c/sup\u003e respectively.\u003c/p\u003e","manuscriptTitle":"Estimating the transfer factor of natural radionuclides from soil to food chain pathways at a farmland in the southwestern Nigeria","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-09-20 02:58:45","doi":"10.21203/rs.3.rs-5109672/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"b88f62cd-05c0-417f-bdf1-738d16f21035","owner":[],"postedDate":"September 20th, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":37816531,"name":"Nuclear Physics"}],"tags":[],"updatedAt":"2024-09-20T02:58:45+00:00","versionOfRecord":[],"versionCreatedAt":"2024-09-20 02:58:45","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-5109672","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-5109672","identity":"rs-5109672","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}