Green surfactant assisted-solidified floating organic drop micro-extraction (SA-SFODME) for the preconcentration of trace cobalt and determination by flame atomic absorption spectrometry (FAAS)

Green surfactant assisted-solidified floating organic drop micro-extraction (SA-SFODME) for the preconcentration of trace cobalt and determination by flame atomic absorption spectrometry (FAAS) | 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 Green surfactant assisted-solidified floating organic drop micro-extraction (SA-SFODME) for the preconcentration of trace cobalt and determination by flame atomic absorption spectrometry (FAAS) Mustafa Ünaldı, İlknur Durukan This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4550826/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 This study focuses on refining the solidified floating organic drop microextraction (SFODME) without using chelating agent technique for enhancing the preconcentration of trace cobalt levels. The cobalt ion formed a hydrophobic complex with the help of the anionic surfactant sodium dodecyl benzene sulfonate (SDBS), and this hydrophobic complex was extracted into the 1-dodecanol drop. This serves as a preliminary step for subsequent analysis using flame atomic absorption spectrometry (FAAS). Several factors influencing microextraction efficiency, such as pH, sodium dodecylbenzenesulfonate (SDBS) concentration, extraction time, stirring rate, and temperature, were systematically investigated to determine optimal conditions. Under these optimized parameters, an enhancement factor of 80 was achieved for a 25 mL sample solution. The calibration curve displayed linearity within the 0.01–0.075 mg/L range, with a limit of detection (3s) of 2.8 µg/L and a limit of quantification (10s) of 9.3 µg/L. The relative standard deviation (RSD) for 10 replicate measurements of 10 µg/L cobalt was 2.1%. The method was successfully applied to extract and determine cobalt in reference water samples and various real water samples, showing notably high extraction yields. solidified floating organic drop microextraction preconcentration flame atomic absorption spectroscopy cobalt green chemistry Full Text Additional Declarations Competing interest reported. This work was supported by the Hacettepe University, Scientific Research Projects Coordination Unit under Grant [FBB-2015-7677]. 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-4550826","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":325424242,"identity":"7934f8e6-2bfd-4921-b694-54b9e1f782fc","order_by":0,"name":"Mustafa Ünaldı","email":"","orcid":"","institution":"Karabük University","correspondingAuthor":false,"prefix":"","firstName":"Mustafa","middleName":"","lastName":"Ünaldı","suffix":""},{"id":325424247,"identity":"4cff04b8-4464-4bb4-b426-b707e51871b2","order_by":1,"name":"İlknur Durukan","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA+UlEQVRIiWNgGAWjYBACNnY2MC1ngCwqgVcLM1iLgTFYy4EEuBYDnFoYoFoSNxCthY+ZLe0x754/6dvZDz98/PGHTR4/A/PB2zwMf/LxOOy4Mc8zg9ydPWnGBgcS0oolG9iSrXkYDCwbcGphb5PmOWCQu+FADpvEgYTDiRsO8JhJA7XgdBlMS7rB+TfsPw4k/E/cf4D/GwEtbMdAWhIMbuSwAb1/ABgOPGyEtKRJzjlgbLjhxjNjiTNpycUSh9mMLedAQx0bkG9vM5N4c0BO3uB88sMPFTZ2efztzQ9vvKmQwxMxaCCBgRlEEa8BpGUUjIJRMApGARoAAIeaS/IMGqmDAAAAAElFTkSuQmCC","orcid":"","institution":"Hacettepe University","correspondingAuthor":true,"prefix":"","firstName":"İlknur","middleName":"","lastName":"Durukan","suffix":""}],"badges":[],"createdAt":"2024-06-08 13:46:30","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4550826/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4550826/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":65197341,"identity":"29f03c5c-7fcf-4379-8ed4-9b8af9ee214d","added_by":"auto","created_at":"2024-09-24 15:39:13","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":446267,"visible":true,"origin":"","legend":"","description":"","filename":"ManuscriptIlknurDurukan3.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4550826/v1_covered_bf3f297b-46ed-409b-9f67-94576724e6ff.pdf"}],"financialInterests":"Competing interest reported. 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The cobalt ion formed a hydrophobic complex with the help of the anionic surfactant sodium dodecyl benzene sulfonate (SDBS), and this hydrophobic complex was extracted into the 1-dodecanol drop. This serves as a preliminary step for subsequent analysis using flame atomic absorption spectrometry (FAAS). Several factors influencing microextraction efficiency, such as pH, sodium dodecylbenzenesulfonate (SDBS) concentration, extraction time, stirring rate, and temperature, were systematically investigated to determine optimal conditions. Under these optimized parameters, an enhancement factor of 80 was achieved for a 25 mL sample solution. The calibration curve displayed linearity within the 0.01\u0026ndash;0.075 mg/L range, with a limit of detection (3s) of 2.8 \u0026micro;g/L and a limit of quantification (10s) of 9.3 \u0026micro;g/L. The relative standard deviation (RSD) for 10 replicate measurements of 10 \u0026micro;g/L cobalt was 2.1%. 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