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Novel and rapid NH4HF2 assisted KH2PO4 fusion of pegmatite ores bearing refractory minerals for multi-element determination by atomic spectrometry.

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Title: Novel and rapid NH4HF2 assisted KH2PO4 fusion of pegmatite ores bearing refractory minerals for multi-element determination by atomic spectrometry.
Authors: Kumari, Alpana1 (AUTHOR), Krishnakumar, M.1 (AUTHOR) krishnakumar.amd@gov.in, Thomas, Anitha Mary1 (AUTHOR), Nandakishore, S. S.1 (AUTHOR)
Source: JAAS (Journal of Analytical Atomic Spectrometry). Feb2024, Vol. 39 Issue 2, p525-535. 11p.
Subjects: Ores, Minerals, Refractory materials, Spectrometry, Mineral analysis
Abstract: Sample digestion and complete dissolution are prerequisites for the precise and accurate elemental analysis of ores and minerals by instrumental analytical methods. Pegmatite ores containing refractory mineral phases are not effectively attacked and dissolved by the low boiling HF–HCl/HNO3 mixture. A novel, rapid, and efficient NH4HF2-assisted KH2PO4 fusion has been standardized for multi-elemental determination of geological samples containing refractory mineral phases. Critical parameters, such as the sample-to-flux ratio, digestion temperature, and contact time of the ore with ammonium bi-fluoride (ABF), were optimized and reported. The novel fusion method has been demonstrated to be effective for the quantitative recovery of all the analytes, including Ti, W, and, especially, Sn. The repeatability of the method was estimated analyzing a control sample. The relative standard deviaiton among replicates for all the analytes were below 3%. The accuracy was established using certified reference materials (IGS-26, IGS-33, and BH-1). All the target analytes were recovered at more than 95% in CRMs. Other validation parameters, such as robustness, selectivity, and LOD/LOQ are also described. This method can be routinely and safely used for the determination of Li, Rb, Nb, Ta, Ti, Mn, Sn, and W in addition to Fe, Ca, Mg, and Al in pegmatite ores. [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
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Header DbId: egs
DbLabel: Engineering Source
An: 175307897
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
  Group: Ti
  Data: Novel and rapid NH<subscript>4</subscript>HF<subscript>2</subscript> assisted KH<subscript>2</subscript>PO<subscript>4</subscript> fusion of pegmatite ores bearing refractory minerals for multi-element determination by atomic spectrometry.
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  Data: <searchLink fieldCode="AR" term="%22Kumari%2C+Alpana%22">Kumari, Alpana</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Krishnakumar%2C+M%2E%22">Krishnakumar, M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> krishnakumar.amd@gov.in</i><br /><searchLink fieldCode="AR" term="%22Thomas%2C+Anitha+Mary%22">Thomas, Anitha Mary</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nandakishore%2C+S%2E+S%2E%22">Nandakishore, S. S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22JAAS+%28Journal+of+Analytical+Atomic+Spectrometry%29%22">JAAS (Journal of Analytical Atomic Spectrometry)</searchLink>. Feb2024, Vol. 39 Issue 2, p525-535. 11p.
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  Label: Subjects
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  Data: <searchLink fieldCode="DE" term="%22Ores%22">Ores</searchLink><br /><searchLink fieldCode="DE" term="%22Minerals%22">Minerals</searchLink><br /><searchLink fieldCode="DE" term="%22Refractory+materials%22">Refractory materials</searchLink><br /><searchLink fieldCode="DE" term="%22Spectrometry%22">Spectrometry</searchLink><br /><searchLink fieldCode="DE" term="%22Mineral+analysis%22">Mineral analysis</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Sample digestion and complete dissolution are prerequisites for the precise and accurate elemental analysis of ores and minerals by instrumental analytical methods. Pegmatite ores containing refractory mineral phases are not effectively attacked and dissolved by the low boiling HF–HCl/HNO3 mixture. A novel, rapid, and efficient NH4HF2-assisted KH2PO4 fusion has been standardized for multi-elemental determination of geological samples containing refractory mineral phases. Critical parameters, such as the sample-to-flux ratio, digestion temperature, and contact time of the ore with ammonium bi-fluoride (ABF), were optimized and reported. The novel fusion method has been demonstrated to be effective for the quantitative recovery of all the analytes, including Ti, W, and, especially, Sn. The repeatability of the method was estimated analyzing a control sample. The relative standard deviaiton among replicates for all the analytes were below 3%. The accuracy was established using certified reference materials (IGS-26, IGS-33, and BH-1). All the target analytes were recovered at more than 95% in CRMs. Other validation parameters, such as robustness, selectivity, and LOD/LOQ are also described. This method can be routinely and safely used for the determination of Li, Rb, Nb, Ta, Ti, Mn, Sn, and W in addition to Fe, Ca, Mg, and Al in pegmatite ores. [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/d3ja00269a
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 525
    Subjects:
      – SubjectFull: Ores
        Type: general
      – SubjectFull: Minerals
        Type: general
      – SubjectFull: Refractory materials
        Type: general
      – SubjectFull: Spectrometry
        Type: general
      – SubjectFull: Mineral analysis
        Type: general
    Titles:
      – TitleFull: Novel and rapid NH4HF2 assisted KH2PO4 fusion of pegmatite ores bearing refractory minerals for multi-element determination by atomic spectrometry.
        Type: main
  BibRelationships:
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      – PersonEntity:
          Name:
            NameFull: Kumari, Alpana
      – PersonEntity:
          Name:
            NameFull: Krishnakumar, M.
      – PersonEntity:
          Name:
            NameFull: Thomas, Anitha Mary
      – PersonEntity:
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            NameFull: Nandakishore, S. S.
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          Dates:
            – D: 01
              M: 02
              Text: Feb2024
              Type: published
              Y: 2024
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              Value: 02679477
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              Value: 39
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              Value: 2
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            – TitleFull: JAAS (Journal of Analytical Atomic Spectrometry)
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