Assessment of Potentially Toxic and Rare Earth Elements in Surface Soils of Dong Nai, Vietnam

Assessment of Potentially Toxic and Rare Earth Elements in Surface Soils of Dong Nai, Vietnam | 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 Potentially Toxic and Rare Earth Elements in Surface Soils of Dong Nai, Vietnam Tran Quang-Thai Vo, Quang-Thien Tran, Tuan-Anh Tran, Thi Thu-Huong Tuong, and 9 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5043112/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 24 Dec, 2024 Read the published version in Environmental Geochemistry and Health → Version 1 posted 10 You are reading this latest preprint version Abstract This study investigates the quantities of Rare Earth Elements (REEs) and Potentially Toxic Elements (PTEs) in Dong Nai Province's surface soils. Atomic Absorption Spectrometry (AAS) and Instrumental Neutron Activation Analysis (INAA) are used to determine element concentrations. To validate the concentration results, established reference materials (NIST 2711 and IAEA Soil-7) were used. Element concentrations followed a certain order, with Mn, Cr, V, and Zn dominating, except for Al, which was used to determine the enrichment factor. Arsenic (As) concentrations ranged from 0.8 to 37.5 mg/kg, exceeding global averages but below Vietnam quality standards. Cadmium (Cd) concentrations ranged from 0.03 to 0.16 mg/kg, below global averages and quality standards. Cobalt (Co) and chromium (Cr) concentrations ranged from 0.5 to 135.1 mg/kg and 18 to 844 mg/kg, respectively, with notable percentages of samples exceeding global averages. Copper (Cu) and lead (Pb) exhibited elevated concentrations, with varying proportions exceeding quality standards. Manganese (Mn) and antimony (Sb) exceeded global averages in a significant percentage of samples. Vanadium (V) concentrations surpassed the crustal average in over half of the sites. Zinc (Zn) concentrations were below reference values. REEs showed significantly higher concentrations than global soil averages, with a substantial proportion of samples exceeding reference values. Geo Accumulation Index (Igeo), Enrichment Factor (EF), and Pollution Load Index (PLI) analyses provided a detailed numerical assessment of contamination and soil quality. Statistical analysis showed correlations and clusters of toxic elements and highlighted the spatial distribution of samples based on elemental compositions. Potentially Toxic Elements Rare Earth Elements Soil contamination Neutron activation analysis Atomic Absorption Spectrometry Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 24 Dec, 2024 Read the published version in Environmental Geochemistry and Health → Version 1 posted Editorial decision: Revision requested 16 Nov, 2024 Reviews received at journal 15 Nov, 2024 Reviews received at journal 07 Nov, 2024 Reviewers agreed at journal 05 Nov, 2024 Reviewers agreed at journal 05 Nov, 2024 Reviewers agreed at journal 04 Nov, 2024 Reviewers invited by journal 15 Sep, 2024 Editor assigned by journal 10 Sep, 2024 Submission checks completed at journal 06 Sep, 2024 First submitted to journal 06 Sep, 2024 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. 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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-5043112","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":356915235,"identity":"056d9aae-3564-40ca-ba54-c3e38d932455","order_by":0,"name":"Tran Quang-Thai Vo","email":"","orcid":"","institution":"Dalat Nuclear Research Institute","correspondingAuthor":false,"prefix":"","firstName":"Tran","middleName":"Quang-Thai","lastName":"Vo","suffix":""},{"id":356915236,"identity":"d5a0b673-7879-40d2-a4b5-1a2c40603dd8","order_by":1,"name":"Quang-Thien Tran","email":"","orcid":"","institution":"Dalat Nuclear Research 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Atomic Absorption Spectrometry (AAS) and Instrumental Neutron Activation Analysis (INAA) are used to determine element concentrations. To validate the concentration results, established reference materials (NIST 2711 and IAEA Soil-7) were used. Element concentrations followed a certain order, with Mn, Cr, V, and Zn dominating, except for Al, which was used to determine the enrichment factor. Arsenic (As) concentrations ranged from 0.8 to 37.5 mg/kg, exceeding global averages but below Vietnam quality standards. Cadmium (Cd) concentrations ranged from 0.03 to 0.16 mg/kg, below global averages and quality standards. Cobalt (Co) and chromium (Cr) concentrations ranged from 0.5 to 135.1 mg/kg and 18 to 844 mg/kg, respectively, with notable percentages of samples exceeding global averages. Copper (Cu) and lead (Pb) exhibited elevated concentrations, with varying proportions exceeding quality standards. Manganese (Mn) and antimony (Sb) exceeded global averages in a significant percentage of samples. Vanadium (V) concentrations surpassed the crustal average in over half of the sites. Zinc (Zn) concentrations were below reference values. REEs showed significantly higher concentrations than global soil averages, with a substantial proportion of samples exceeding reference values. Geo Accumulation Index (Igeo), Enrichment Factor (EF), and Pollution Load Index (PLI) analyses provided a detailed numerical assessment of contamination and soil quality. 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