Assessment of Human Exposure Risk to 226Ra, 40K and 232Th within Soil of Artisanal Gold Mine Using RESRAD Code

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This study aimed to estimate morbidity excess cancer risk (ECR) from internal and external exposure to naturally occurring radionuclides (226Ra, 232Th, and 40K) in soil from three artisanal gold mining and surrounding agricultural/resident regions in Niger State, North Central Nigeria. Using activity concentrations taken from prior reports and RESRAD code simulations, the authors reported a maximum morbidity ECR of 0.590, with the highest value occurring at 120 years; the largest contribution came from 226Ra. The paper indicates that the dominant exposure pathways were direct radiation from soil (including direct and airborne) and inhalation. The paper does not include details of new radionuclide measurements or other validation steps beyond using existing soil concentration data. This paper does not explicitly discuss endometriosis or adenomyosis; it was included in the corpus via a keyword match in the upstream search index.

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Abstract

Abstract Estimating the morbidity excess cancer risk (ECR) from internal and external exposure to naturally occurring radionuclides (226Ra, 232Th, and 40K) in the soil from three artisanal gold mining and resident agricultural regions in Niger State, North Central Nigeria, is the aim of this study. The activity concentration of naturally occurring radionuclides in soil was selected from the last reports. The excess cancer risks from the exposure to these radionuclides were estimated by the application of Residual-RADioactivity (RESRAD) code. The results obtained in this report show that the calculated maximum morbidity excess cancer risk from 226Ra, 232Th, and 40K in soil from the gold artisanal mining and resident farming areas was 0.590. The calculations further indicate that the maximum morbidity ECR value is highest in 120 years. It shows that the highest ECR was from 226Ra, and the highest exposure pathways were through direct radiation from soil (direct and airborne) and inhalation. The findings of this study could be helpful in determining the risk of environmental natural radioactivity as well as in making decisions about radiation protection.
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Assessment of Human Exposure Risk to 226Ra, 40K and 232Th within Soil of Artisanal Gold Mine Using RESRAD Code | 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 Assessment of Human Exposure Risk to 226 Ra, 40 K and 232 Th within Soil of Artisanal Gold Mine Using RESRAD Code A. Muhammad, Akbar Abbasi This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6540661/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 Estimating the morbidity excess cancer risk (ECR) from internal and external exposure to naturally occurring radionuclides ( 226 Ra, 232 Th, and 40 K) in the soil from three artisanal gold mining and resident agricultural regions in Niger State, North Central Nigeria, is the aim of this study. The activity concentration of naturally occurring radionuclides in soil was selected from the last reports. The excess cancer risks from the exposure to these radionuclides were estimated by the application of Residual-RADioactivity (RESRAD) code. The results obtained in this report show that the calculated maximum morbidity excess cancer risk from 226 Ra, 232 Th, and 40 K in soil from the gold artisanal mining and resident farming areas was 0.590. The calculations further indicate that the maximum morbidity ECR value is highest in 120 years. It shows that the highest ECR was from 226 Ra, and the highest exposure pathways were through direct radiation from soil (direct and airborne) and inhalation. The findings of this study could be helpful in determining the risk of environmental natural radioactivity as well as in making decisions about radiation protection. Excess cancer risk naturally occurring radiation RESRAD artisanal mining simulation Full Text Additional Declarations No competing interests reported. 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. 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