Hydrochemical components evolution and suitability assessment of groundwater in Emei-Jiajiang Plain of Southwestern China

Hydrochemical components evolution and suitability assessment of groundwater in Emei-Jiajiang Plain of Southwestern 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 Hydrochemical components evolution and suitability assessment of groundwater in Emei-Jiajiang Plain of Southwestern China Hao Liu, Xin Huang, anbang huang, jibo shi, yanming liu, peng zhang This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8840552/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 To investigate the hydrochemical formation mechanisms of groundwater in Emei-Jiajiang Plain and to analyze the sources of hydrochemical components, traditional hydrochemical diagram methods, mathematical statistics, the Absolute Principal Component Scores-Multiple Linear Regression model (APCS-MLR), and the Positive Matrix Factorization model (PMF) were used. Based on the inorganic component contents of 19 Quaternary groundwater samples, the hydrochemical characteristics of Quaternary groundwater, the contribution rates of hydrochemical component sources, and water quality status were analyzed. The results show that: The hydrochemical composition of groundwater is mainly controlled by rock weathering, with carbonates and silicates being important sources of groundwater ionic components, and the dissolution of carbonate is comprehensively controlled by H 2 CO 3 and H 2 SO 4 . Human activities have exerted a certain impact on the groundwater in the study area, mainly from domestic sewage and agricultural sewage. Both the APCS-MLR and PMF results indicate that natural sources, mixed sources from of industrial and agricultural activities, agricultural activities, and domestic sewage are the main factors affecting the groundwater in the study area. The groundwater quality in the study area is generally good. Entropy Weight Water Quality Index (EWQI) evaluation results show that most areas are suitable for direct human consumption, with a low potential non-carcinogenic risks, and suitable for irrigation, only local sites have health risks and are not suitable for irrigation. groundwater hydrochemistry ion ratio genetic analysis APCS-MLR PMF health risk assessment irrigation suitability 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. 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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-8840552","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":615027978,"identity":"59ac0004-00c9-49b7-96ed-0e795c539448","order_by":0,"name":"Hao Liu","email":"","orcid":"","institution":"Sichuan Institute of Land and Space Ecological Restoration and Geological Hazard Prevention","correspondingAuthor":false,"prefix":"","firstName":"Hao","middleName":"","lastName":"Liu","suffix":""},{"id":615027979,"identity":"e1f42ca5-6264-4743-8a78-cb4342000945","order_by":1,"name":"Xin Huang","email":"","orcid":"","institution":"Sichuan 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