Geospatial Assessment and Environmental Implications of Natural Radioelement Distribution in Selected Locations in Ondo and Osun States Using Aeroradiometric Technique

Geospatial Assessment and Environmental Implications of Natural Radioelement Distribution in Selected Locations in Ondo and Osun States Using Aeroradiometric Technique | 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 Geospatial Assessment and Environmental Implications of Natural Radioelement Distribution in Selected Locations in Ondo and Osun States Using Aeroradiometric Technique Ruth O. Morakinyo, Mojisola R. Usikalu, Theophilus A. Adagunodo, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7062115/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 23 Jan, 2026 Read the published version in Environmental Monitoring and Assessment → Version 1 posted 13 You are reading this latest preprint version Abstract This study presents an airborne radiometric assessment of natural gamma radiation across selected areas in Ondo and Osun States, Nigeria, utilising radiometric datasets from Sheets 263 and 264 obtained from the Nigerian Geological Survey Agency. The data, organised in a gridded format, were analysed using Oasis Montaj software to quantify the concentrations of naturally occurring radioelements, 238 U, 232 Th, and 40 K, and to estimate the corresponding terrestrial gamma dose rates. Results indicate that, in Sheet 264, concentrations of 238 U, 232 Th, and 40 K range from 3.08–102.31 Bq/kg, 19.10–174.05 Bq/kg, and 91.85–1,563.00 Bq/kg, respectively. For Sheet 263, 238 U concentrations span 0.38–94.72 Bq/kg, 232 Th from 5.90–162.70 Bq/kg, and 40 K from 59.50–943.00 Bq/kg. The calculated absorbed dose rates in both sheets exceed the global average of 59 nGy/h, with generally higher values observed in Sheet 264. The elevated levels of primordial radionuclides and associated radiation doses in several locations suggest a potential public health concern due to chronic exposure to ionising radiation. Given the geological context and ongoing anthropogenic activities in the region, routine environmental monitoring is recommended to mitigate potential radiological risks to local populations. Airborne gamma radiation grid Ondo and Osun state Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 23 Jan, 2026 Read the published version in Environmental Monitoring and Assessment → Version 1 posted Editorial decision: Revision requested 04 Oct, 2025 Reviews received at journal 02 Sep, 2025 Reviewers agreed at journal 30 Aug, 2025 Reviewers agreed at journal 28 Aug, 2025 Reviews received at journal 27 Aug, 2025 Reviewers agreed at journal 27 Aug, 2025 Reviews received at journal 17 Aug, 2025 Reviewers agreed at journal 26 Jul, 2025 Reviewers agreed at journal 24 Jul, 2025 Reviewers invited by journal 24 Jul, 2025 Editor assigned by journal 15 Jul, 2025 Submission checks completed at journal 15 Jul, 2025 First submitted to journal 07 Jul, 2025 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-7062115","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":491380647,"identity":"7a7a6734-cb37-4492-8b67-3fb0960246f8","order_by":0,"name":"Ruth O. 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The data, organised in a gridded format, were analysed using Oasis Montaj software to quantify the concentrations of naturally occurring radioelements, \u003csup\u003e238\u003c/sup\u003eU, \u003csup\u003e232\u003c/sup\u003eTh, and \u003csup\u003e40\u003c/sup\u003eK, and to estimate the corresponding terrestrial gamma dose rates. Results indicate that, in Sheet 264, concentrations of \u003csup\u003e238\u003c/sup\u003eU, \u003csup\u003e232\u003c/sup\u003eTh, and \u003csup\u003e40\u003c/sup\u003eK range from 3.08\u0026ndash;102.31 Bq/kg, 19.10\u0026ndash;174.05 Bq/kg, and 91.85\u0026ndash;1,563.00 Bq/kg, respectively. For Sheet 263, \u003csup\u003e238\u003c/sup\u003eU concentrations span 0.38\u0026ndash;94.72 Bq/kg, \u003csup\u003e232\u003c/sup\u003eTh from 5.90\u0026ndash;162.70 Bq/kg, and \u003csup\u003e40\u003c/sup\u003eK from 59.50\u0026ndash;943.00 Bq/kg. The calculated absorbed dose rates in both sheets exceed the global average of 59 nGy/h, with generally higher values observed in Sheet 264. The elevated levels of primordial radionuclides and associated radiation doses in several locations suggest a potential public health concern due to chronic exposure to ionising radiation. Given the geological context and ongoing anthropogenic activities in the region, routine environmental monitoring is recommended to mitigate potential radiological risks to local populations.\u003c/p\u003e","manuscriptTitle":"Geospatial Assessment and Environmental Implications of Natural Radioelement Distribution in Selected Locations in Ondo and Osun States Using Aeroradiometric Technique","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-07-28 13:33:23","doi":"10.21203/rs.3.rs-7062115/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Revision requested","date":"2025-10-04T15:22:01+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-09-02T08:10:05+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"234577936402159705305834378009539145335","date":"2025-08-30T09:06:13+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"119798284838257652078110539268564375689","date":"2025-08-28T23:16:53+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-08-28T03:56:12+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"107261629392407153917115982118276632255","date":"2025-08-28T03:21:01+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-08-18T00:33:28+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"46815331501430136231415904520255041770","date":"2025-07-27T02:29:40+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"69819573389679068791732583509718977830","date":"2025-07-25T01:23:33+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2025-07-24T17:27:49+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2025-07-15T08:31:58+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2025-07-15T08:31:26+00:00","index":"","fulltext":""},{"type":"submitted","content":"Environmental Monitoring and Assessment","date":"2025-07-07T06:47:46+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"environmental-monitoring-and-assessment","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"emas","sideBox":"Learn more about [Environmental Monitoring and Assessment](http://link.springer.com/journal/10661)","snPcode":"10661","submissionUrl":"https://submission.nature.com/new-submission/10661/3","title":"Environmental Monitoring and Assessment","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"462a9d15-c1d9-40f5-9ad0-d6f4d16cf21e","owner":[],"postedDate":"July 28th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"published-in-journal","subjectAreas":[],"tags":[],"updatedAt":"2026-01-26T16:03:39+00:00","versionOfRecord":{"articleIdentity":"rs-7062115","link":"https://doi.org/10.1007/s10661-026-15012-x","journal":{"identity":"environmental-monitoring-and-assessment","isVorOnly":false,"title":"Environmental Monitoring and Assessment"},"publishedOn":"2026-01-23 15:57:44","publishedOnDateReadable":"January 23rd, 2026"},"versionCreatedAt":"2025-07-28 13:33:23","video":"","vorDoi":"10.1007/s10661-026-15012-x","vorDoiUrl":"https://doi.org/10.1007/s10661-026-15012-x","workflowStages":[]},"version":"v1","identity":"rs-7062115","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7062115","identity":"rs-7062115","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}