Could the presence of ferrihydrite identified in a riverbed impacted by mining leachates be linked to the reduction in the Heavy Metals Contamination Index?

Could the presence of ferrihydrite identified in a riverbed impacted by mining leachates be linked to the reduction in the Heavy Metals Contamination Index? | 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 Could the presence of ferrihydrite identified in a riverbed impacted by mining leachates be linked to the reduction in the Heavy Metals Contamination Index? Asunción Guadalupe Morales-Mendoza, Ana Karen Ivanna Flores-Trujillo, and 4 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4415513/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 Water bodies have suffered degradation due to the discharge of pollutants, including potentially toxic elements (PTEs), primarily from mining operations. One such instance is the extraction of metallic elements in Taxco de Alarcón, Mexico. In this study, elements were analysed by Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES) in 11 points of Acamixtla, Taxco, and San Juan Rivers. The data analysis included principal components analysis (PCA) and determination of Heavy-Metals and Metalloids Pollution Index (HMPI), as well as their Health Risk Assessment. Additionally, solid samples from RSJMG S2.3 were characterized by Fourier Transform-Infrared Spectroscopy (FT-IR) and Scanning Electron Microscopy (SEM). The elements (As, Cr, Ni, Zn, Fe, Mn, Cu, Cd, Pb, Se, and Li) were identified in the water samples. PCA revealed that component one, accounted for 82.8% of the variability data, and Pearson correlation analysis showed a significant (p < 0.05) correlation of Fe with As, Cu, Pb, and Zn. The highest HMPI (8491.52) was detected at RSJMG S2.3 point. Other points exhibited a 96.45 % to 100% lower exposure than RSJMG S2.3 point, that could be due to metal complexation with naturally occurring mineral ferrihydrite (Fe10 O14(OH)2), that was identified by SEM and FTIR in solids collected at the RSJMG S2.3 point. For Health Risk Assessment, the chronic oral daily intake and dermal exposure were predominant in all points impacted by leachates downstream of the San Juan River. Likewise, for the elements Cd, As and Zn were highest values and all sites presented high hazard index. Metals and metalloids water pollution heavy metals and metalloid pollution index exposition index mining activity ferrihydrite mine lixiviates Full Text 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-4415513","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":305828355,"identity":"1c924244-933d-45f3-894a-1a3f81e6c842","order_by":0,"name":"Asunción Guadalupe 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One such instance is the extraction of metallic elements in Taxco de Alarcón, Mexico. In this study, elements were analysed by Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES) in 11 points of Acamixtla, Taxco, and San Juan Rivers. The data analysis included principal components analysis (PCA) and determination of Heavy-Metals and Metalloids Pollution Index (HMPI), as well as their Health Risk Assessment. Additionally, solid samples from RSJMG S2.3 were characterized by Fourier Transform-Infrared Spectroscopy (FT-IR) and Scanning Electron Microscopy (SEM). The elements (As, Cr, Ni, Zn, Fe, Mn, Cu, Cd, Pb, Se, and Li) were identified in the water samples. PCA revealed that component one, accounted for 82.8% of the variability data, and Pearson correlation analysis showed a significant (p \u0026lt; 0.05) correlation of Fe with As, Cu, Pb, and Zn. The highest HMPI (8491.52) was detected at RSJMG S2.3 point. Other points exhibited a 96.45 % to 100% lower exposure than RSJMG S2.3 point, that could be due to metal complexation with naturally occurring mineral ferrihydrite (Fe10 O14(OH)2), that was identified by SEM and FTIR in solids collected at the RSJMG S2.3 point. For Health Risk Assessment, the chronic oral daily intake and dermal exposure were predominant in all points impacted by leachates downstream of the San Juan River. 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