The importance of the pretreatment of samples in Nd quantification from NdFeB magnets through inductively coupled plasma atomic emission spectroscopy (ICP-OES)—a rapid and streamlined methodology.
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| Title: | The importance of the pretreatment of samples in Nd quantification from NdFeB magnets through inductively coupled plasma atomic emission spectroscopy (ICP-OES)—a rapid and streamlined methodology. |
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| Authors: | Gallardo, Karem1,2 (AUTHOR), Valdivia, Dayana1 (AUTHOR), Jara, Andrea1,2 (AUTHOR), Castillo, Rodrigo1 (AUTHOR) rocastillo@ucn.cl |
| Source: | Journal of Environmental Science & Health. Part A. Toxic/Hazardous Substances & Environmental Engineering. 2023, Vol. 58 Issue 11, p935-941. 7p. |
| Subject Terms: | *Inductively coupled plasma atomic emission spectrometry, Magnets |
| Abstract: | In this study, we emphasize the critical role of sample pretreatment. We report on the behavior of NdFeB magnet samples exposed to four different acid media for digestion. NdFeB magnets are becoming a significant source of neodymium, a rare-earth element critical to many technologies and a potential substitute for traditional mining of the element. To address this, we meticulously tested nitric acid, hydrochloric acid, acetic acid, and citric acid, all at a concentration of 1.6 M, as economical and environmentally friendly alternatives to the concentrated mineral acids commonly used in the leaching of these materials. The pivotal stage involves the initial characterization of samples in the solid state using SEM-EDX and XPS analysis to obtain their initial composition. Subsequently, the samples are dissolved in the four aforementioned acids. Finally, neodymium is quantified using ICP-OES. Throughout our investigation, we evaluated some analytical parameters to determine the best candidate for performing the digestion, including time, limits of detection and quantification, accuracy, recovery of spike samples, and robustness. After careful consideration, we unequivocally conclude that 1.6 M nitric acid stands out as the optimal choice for dissolving NdFeB magnet samples, with the pretreatment of the samples being the critical aspect of this report. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Environmental Science & Health. Part A. Toxic/Hazardous Substances & Environmental Engineering is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: 8gh DbLabel: GreenFILE An: 173345231 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: The importance of the pretreatment of samples in Nd quantification from NdFeB magnets through inductively coupled plasma atomic emission spectroscopy (ICP-OES)—a rapid and streamlined methodology. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Gallardo%2C+Karem%22">Gallardo, Karem</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Valdivia%2C+Dayana%22">Valdivia, Dayana</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jara%2C+Andrea%22">Jara, Andrea</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Castillo%2C+Rodrigo%22">Castillo, Rodrigo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> rocastillo@ucn.cl</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Environmental+Science+%26+Health%2E+Part+A%2E+Toxic%2FHazardous+Substances+%26+Environmental+Engineering%22">Journal of Environmental Science & Health. Part A. Toxic/Hazardous Substances & Environmental Engineering</searchLink>. 2023, Vol. 58 Issue 11, p935-941. 7p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Inductively+coupled+plasma+atomic+emission+spectrometry%22">Inductively coupled plasma atomic emission spectrometry</searchLink><br /><searchLink fieldCode="DE" term="%22Magnets%22">Magnets</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In this study, we emphasize the critical role of sample pretreatment. We report on the behavior of NdFeB magnet samples exposed to four different acid media for digestion. NdFeB magnets are becoming a significant source of neodymium, a rare-earth element critical to many technologies and a potential substitute for traditional mining of the element. To address this, we meticulously tested nitric acid, hydrochloric acid, acetic acid, and citric acid, all at a concentration of 1.6 M, as economical and environmentally friendly alternatives to the concentrated mineral acids commonly used in the leaching of these materials. The pivotal stage involves the initial characterization of samples in the solid state using SEM-EDX and XPS analysis to obtain their initial composition. Subsequently, the samples are dissolved in the four aforementioned acids. Finally, neodymium is quantified using ICP-OES. Throughout our investigation, we evaluated some analytical parameters to determine the best candidate for performing the digestion, including time, limits of detection and quantification, accuracy, recovery of spike samples, and robustness. After careful consideration, we unequivocally conclude that 1.6 M nitric acid stands out as the optimal choice for dissolving NdFeB magnet samples, with the pretreatment of the samples being the critical aspect of this report. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Environmental Science & Health. Part A. Toxic/Hazardous Substances & Environmental Engineering is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1080/10934529.2023.2264135 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 935 Subjects: – SubjectFull: Inductively coupled plasma atomic emission spectrometry Type: general – SubjectFull: Magnets Type: general Titles: – TitleFull: The importance of the pretreatment of samples in Nd quantification from NdFeB magnets through inductively coupled plasma atomic emission spectroscopy (ICP-OES)—a rapid and streamlined methodology. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Gallardo, Karem – PersonEntity: Name: NameFull: Valdivia, Dayana – PersonEntity: Name: NameFull: Jara, Andrea – PersonEntity: Name: NameFull: Castillo, Rodrigo IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: 2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 10934529 Numbering: – Type: volume Value: 58 – Type: issue Value: 11 Titles: – TitleFull: Journal of Environmental Science & Health. Part A. Toxic/Hazardous Substances & Environmental Engineering Type: main |
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