Mathematical correction for polyatomic isobaric spectral interferences in determination of lanthanides by inductively Coupled Plasma Mass Spectrometry

Narendra M. Raut, Li-Shing Huang, Suresh K. Aggarwal, King Chuen Lin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The determination of lanthanides by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) is complicated by several spectral over laps from M +, MO+ or MOH+ions formed in the ICP. Especially, it is essential to avoid the spectral interferences from lighter lanthanide and Ba polyatomic ions on mid die or heavier lanthanides. To tackle this problem, we have developed a mathematical correction method, which reduces all the spectral over laps from oxide species of Pr, Nd, Ce and Sm over Gd, Tb, Dy and Ho, and Gd, Tb over Yb and Lu. It can also success fully correct the oxide and hydroxide interference of Ba over Eu. The effectiveness of the proposed the mathematical correction scheme is demonstrated for the USGS Standard Rock samples AGV-1 and G-2. The results show that the experimental data obtained by applying the mathematical correction scheme for lanthanides is in good agreement with the reported values, using pneumatic and ultrasonic nebulisation methods, for their ICP-MS analysis.

Original languageEnglish
Pages (from-to)589-597
Number of pages9
JournalJournal of the Chinese Chemical Society
Volume52
Issue number4
DOIs
StatePublished - 1 Jan 2005

Keywords

  • ICP-MS
  • Lanthanides

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