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Magnetic nanoparticles for removing inorganic arsenic species from waters: A proof of concept for potential application

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dc.contributor.authorVicente Martínez, Yésica
dc.contributor.authorLopez García, Ignacio
dc.contributor.authorHernández Córdoba, Manuel
dc.contributor.authorCaravaca, Manuel
dc.contributor.authorEl Farh, Sokaina
dc.contributor.departmentQuímica Analítica
dc.date.accessioned2025-01-22T11:47:11Z
dc.date.available2025-01-22T11:47:11Z
dc.date.issued2023-03-30
dc.description© 2023 Los autores This document is the submitted version of a published work that appeared in final form in Advances in Sample Preparation Volume This document is made available under the CC-BY 4.0 license http://creativecommons.org/licenses/by/4.0 To access the final edited and published work see: https://doi.org/10.1016/j.sampre.2023.100064
dc.description.abstractInorganic arsenic is considered one of the most critical and severe environmental problems due to its high toxicity even at low levels of exposure, causing serious health problems. Humans can be exposed to arsenic mainly through inhalation, ingestion of food and water, especially in certain areas where water comes into contact with arsenic- bearing minerals. For natural geological reasons, water in some areas of the world may contain more arsenic than usual. For these circumstances, the development of methods for the removal of arsenic from water has been of increasing interest in recent years. This work presents an optimised removal of As(III) and As(V) from water by the in situ formation of ferrite (Fe 3 O 4 ) nanoparticles, leading to the adsorption of this element in the Fe 3 O 4 structure. In addition, the magnetic properties of the nanoparticles facilitate their removal from the medium by a magnet. The experimental conditions of the process were optimised and the total removal of high concentrations of As(III) and As(V) in water was achieved in only two minutes and at 50 °C at basic pH, using 200 μL of a 0.2 M FeCl 2 ·4H 2 O solution and 100 μL of a 0.1 M FeCl 3 ·6H 2 O solution to form Fe 3 O 4 in situ . The ferrite surface was characterised by field emission scanning electron microscopy before and after the arsenic removal process and by energy dispersive X-ray spectroscopy before the process. The study of adsorption kinetics and equilibrium isotherms reveals a Langmuir-type physicochemical process.
dc.formatapplication/pdfes
dc.format.extent6
dc.identifier.citationAdvances in Sample Preparation Volume 6, May 2023, 100064
dc.identifier.doihttps://doi.org/10.1016/j.sampre.2023.100064
dc.identifier.urihttp://hdl.handle.net/10201/149066
dc.languagespaes
dc.publisherElsevier B.V.
dc.relationSpanish MCIN (Project PID2021–123201NB-I00 financed by MCIN/AEI/10.13039/501100011033/FEDER, UE).es
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S2772582023000141?via%3Dihub
dc.rightsinfo:eu-repo/semantics/openAccesses
dc.rightsAtribución 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectInorganic arsenic removales
dc.subjectMagnetic separation
dc.subjectFerrite
dc.subjectElectrothermal atomic absorption spectrometry
dc.titleMagnetic nanoparticles for removing inorganic arsenic species from waters: A proof of concept for potential applicationes
dc.typeinfo:eu-repo/semantics/articlees
dspace.entity.typePublicationes
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