{"paper_id":"49725ca7-e2fa-4f84-a615-8982fdb2694e","body_text":"Pollution characteristics, bioavailability, and risk assessment of heavy metals in urban road dust from Zhengzhou, China | 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 Pollution characteristics, bioavailability, and risk assessment of heavy metals in urban road dust from Zhengzhou, China Jialu Li, Qiting Zuo, Feng Feng, Hongtao Jia, Yingxin Ji This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4757975/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 15 Oct, 2024 Read the published version in Environmental Geochemistry and Health → Version 1 posted 10 You are reading this latest preprint version Abstract To analyze contamination levels, spatial distribution characteristics, bioavailability, and risks of heavy metals (Cr, Ni, Cu, Zn, As, Cd, Hg, and Pb), 65 road dust samples were collected from Zhengzhou in October 2023. The mean concentrations of most heavy metals, except Ni, exceeded their corresponding background values, with the mean concentration of Cd being 7.43 times that of its background. Spatially, for most heavy metals, higher concentrations concentrated within the central area, and notable pollution hotspot emerged in proximity to construction area. Cr, Ni, Cu, As, and Pb were mostly bound to residual fraction with lower bioavailability, while Cd and Zn were mainly in exchangeable fraction with higher bioavailability. The enrichment factor, geo-accumulation, contamination factor, and pollution load index indicated that Cd and Hg were highly contaminated, particularly Cd, yet the study area remained moderate pollution. The average RI value of 384.66 indicated a considerate ecological risk, and Cd caused the highest potential ecological risk. Both of the non-carcinogenic and carcinogenic risk were insignificant, however, the human health risk of Cr, As, and Pb demand attention. The research results can provide theoretical basis and data support for the pollution prevention and control of urban environment of Zhengzhou. Road dust Heavy metals Contamination level Spatial distribution Geochemical fraction Risk assessment Full Text Additional Declarations No competing interests reported. Supplementary Files Supplementarymaterial.docx Cite Share Download PDF Status: Published Journal Publication published 15 Oct, 2024 Read the published version in Environmental Geochemistry and Health → Version 1 posted Editorial decision: Revision requested 31 Aug, 2024 Reviews received at journal 28 Aug, 2024 Reviewers agreed at journal 27 Aug, 2024 Reviews received at journal 12 Aug, 2024 Reviewers agreed at journal 30 Jul, 2024 Reviewers agreed at journal 28 Jul, 2024 Reviewers invited by journal 28 Jul, 2024 Editor assigned by journal 19 Jul, 2024 Submission checks completed at journal 18 Jul, 2024 First submitted to journal 17 Jul, 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-4757975\",\"acceptedTermsAndConditions\":true,\"allowDirectSubmit\":false,\"archivedVersions\":[],\"articleType\":\"Research Article\",\"associatedPublications\":[],\"authors\":[{\"id\":338921122,\"identity\":\"81f32718-f2fb-4cfa-955e-3ca85c6c694f\",\"order_by\":0,\"name\":\"Jialu Li\",\"email\":\"\",\"orcid\":\"\",\"institution\":\"Yellow River Conservancy Technical Institute\",\"correspondingAuthor\":false,\"prefix\":\"\",\"firstName\":\"Jialu\",\"middleName\":\"\",\"lastName\":\"Li\",\"suffix\":\"\"},{\"id\":338921123,\"identity\":\"69f1f126-35ec-48bd-8b2a-44d78c314434\",\"order_by\":1,\"name\":\"Qiting 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