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Related Concept Videos

Mass Analyzers: Overview01:13

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The mass analyzer is a crucial component of the mass spectrometer. In the ionization chamber, the vaporized sample is bombarded with a high-energy electron beam to generate a radical cation and further fragment into neutral molecules, radicals, and cations. A series of negatively charged accelerator plates accelerate the cations into the mass analyzer. The mass analyzer separates ions according to their mass-to-charge (m/z) ratios and then directs them to the detector. The common types of mass...
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Related Experiment Video

Updated: Jan 8, 2026

Preparation of Authigenic Pyrite from Methane-bearing Sediments for In Situ Sulfur Isotope Analysis Using SIMS
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High Spatial Resolution (< 10 μm) Zircon SIMS Zr Isotope Analysis.

Sheng He1,2,3, Yang Li4, Liguang Wu5

  • 1State Key Laboratory of Lithospheric and Environmental Coevolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China.

Rapid Communications in Mass Spectrometry : RCM
|December 23, 2025
PubMed
Summary

This study presents a new, nearly non-destructive method for analyzing zirconium (Zr) isotopes in zircon using secondary ion mass spectrometry (SIMS). This high-resolution technique advances the study of magmatic processes by enabling detailed Zr isotope analysis.

Keywords:
SIMSZr isotopehigh spatial resolutionzircon

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Area of Science:

  • Geochemistry
  • Isotope Geology
  • Analytical Chemistry

Background:

  • Zircon Zr isotopic variations are key to understanding magmatic processes, but fractionation mechanisms are debated.
  • High spatial resolution analysis is crucial for complex or small zircon samples.

Purpose of the Study:

  • To develop and optimize a high spatial resolution secondary ion mass spectrometry (SIMS) method for microanalysis of zircon Zr isotopes.
  • To establish a nearly non-destructive technique for detailed Zr isotope investigation.

Main Methods:

  • Systematic optimization of SIMS parameters including beam current, diameter, raster size, and acquisition time.
  • Evaluation of topography effects using dynamic transfer parameters.
  • Development of a microanalysis method for zircon Zr isotopes.

Main Results:

  • Achieved internal precision (2SE) for δ⁹⁴Zr measurements from 0.07‰ to 0.16‰.
  • External reproducibility better than 0.15‰ (2SD).
  • Method provides high spatial resolution (~10 × 9 μm²) with minimal sample consumption (~0.05 ng).

Conclusions:

  • The developed SIMS technique is nearly non-destructive and suitable for complex or precious samples.
  • This method advances the study of magmatic processes through detailed zircon Zr isotope analysis.
  • Applicable to samples like lunar zircon, enhancing understanding of geological histories.