Optimization of internal standard selection for precise trace impurity quantification in Li2S via ICP-OES.
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| Title: | Optimization of internal standard selection for precise trace impurity quantification in Li |
|---|---|
| Authors: | Lee, Woomi1 (AUTHOR), Ryu, Kwang-Sun1 (AUTHOR) ryuks@ulsan.ac.kr |
| Source: | JAAS (Journal of Analytical Atomic Spectrometry). Jul2026, Vol. 41 Issue 7, p2352-2359. 8p. |
| Subjects: | Matrix effect, Trace element analysis, Solid state batteries, Lithium compounds, Inductively coupled plasma atomic emission spectrometry, Analytical chemistry |
| Abstract: | Lithium sulfide (Li2S) is a critical precursor for sulfide-based solid electrolytes in next-generation all-solid-state batteries; accordingly, rigorous control and accurate quantification of trace-level impurities are essential. Accurate determination by inductively coupled plasma optical emission spectrometry (ICP-OES) is, however, severely complicated by matrix-induced signal suppression and enhancement in high-concentration Li2S solutions. This study systematically evaluated the selection of internal standards (IS) to compensate for matrix effects and improve analytical precision in a 1% (w/v) Li2S matrix. Five IS candidates, namely Sc, Y, Ru, Bi, and In, were screened on the basis of total excitation energy levels and assessed for matrix-correction efficiency across 16 target analytes. Method performance was validated through recovery, method detection limits (MDLs), and limits of quantification (LOQs). Without IS correction, matrix-induced signal depression reduced analyte recoveries to as low as 38.7%; implementation of an optimized IS scheme restored quantitative accuracy and markedly narrowed inter-replicate variability. Sc (361.383 nm) and Y (324.225 nm) demonstrated the broadest corrective efficacy, whereas Ru (240.272 nm) caused systematic overcorrection, up to 164% recovery for low-excitation-energy elements, due to its high total excitation energy (12.52 eV). IS-corrected MDLs were substantially lower than those obtained by EC. These findings establish total excitation energy matching as the governing criterion for IS selection in complex lithium-based matrices. [ABSTRACT FROM AUTHOR] |
| Copyright of JAAS (Journal of Analytical Atomic Spectrometry) is the property of Royal Society of Chemistry 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.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 195178499 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Optimization of internal standard selection for precise trace impurity quantification in Li<subscript>2</subscript>S via ICP-OES. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Lee%2C+Woomi%22">Lee, Woomi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ryu%2C+Kwang-Sun%22">Ryu, Kwang-Sun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ryuks@ulsan.ac.kr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22JAAS+%28Journal+of+Analytical+Atomic+Spectrometry%29%22">JAAS (Journal of Analytical Atomic Spectrometry)</searchLink>. Jul2026, Vol. 41 Issue 7, p2352-2359. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Matrix+effect%22">Matrix effect</searchLink><br /><searchLink fieldCode="DE" term="%22Trace+element+analysis%22">Trace element analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Solid+state+batteries%22">Solid state batteries</searchLink><br /><searchLink fieldCode="DE" term="%22Lithium+compounds%22">Lithium compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Inductively+coupled+plasma+atomic+emission+spectrometry%22">Inductively coupled plasma atomic emission spectrometry</searchLink><br /><searchLink fieldCode="DE" term="%22Analytical+chemistry%22">Analytical chemistry</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Lithium sulfide (Li2S) is a critical precursor for sulfide-based solid electrolytes in next-generation all-solid-state batteries; accordingly, rigorous control and accurate quantification of trace-level impurities are essential. Accurate determination by inductively coupled plasma optical emission spectrometry (ICP-OES) is, however, severely complicated by matrix-induced signal suppression and enhancement in high-concentration Li2S solutions. This study systematically evaluated the selection of internal standards (IS) to compensate for matrix effects and improve analytical precision in a 1% (w/v) Li2S matrix. Five IS candidates, namely Sc, Y, Ru, Bi, and In, were screened on the basis of total excitation energy levels and assessed for matrix-correction efficiency across 16 target analytes. Method performance was validated through recovery, method detection limits (MDLs), and limits of quantification (LOQs). Without IS correction, matrix-induced signal depression reduced analyte recoveries to as low as 38.7%; implementation of an optimized IS scheme restored quantitative accuracy and markedly narrowed inter-replicate variability. Sc (361.383 nm) and Y (324.225 nm) demonstrated the broadest corrective efficacy, whereas Ru (240.272 nm) caused systematic overcorrection, up to 164% recovery for low-excitation-energy elements, due to its high total excitation energy (12.52 eV). IS-corrected MDLs were substantially lower than those obtained by EC. These findings establish total excitation energy matching as the governing criterion for IS selection in complex lithium-based matrices. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of JAAS (Journal of Analytical Atomic Spectrometry) is the property of Royal Society of Chemistry 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: 10.1039/d6ja00119j Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 2352 Subjects: – SubjectFull: Matrix effect Type: general – SubjectFull: Trace element analysis Type: general – SubjectFull: Solid state batteries Type: general – SubjectFull: Lithium compounds Type: general – SubjectFull: Inductively coupled plasma atomic emission spectrometry Type: general – SubjectFull: Analytical chemistry Type: general Titles: – TitleFull: Optimization of internal standard selection for precise trace impurity quantification in Li2S via ICP-OES. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Lee, Woomi – PersonEntity: Name: NameFull: Ryu, Kwang-Sun IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 02679477 Numbering: – Type: volume Value: 41 – Type: issue Value: 7 Titles: – TitleFull: JAAS (Journal of Analytical Atomic Spectrometry) Type: main |
| ResultId | 1 |
