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Related Experiment Videos

Analytical atomic spectroscopy using ion trap devices.

C J Barinaga1, G C Eiden, M L Alexander

  • 1Pacific Northwest National Laboratory, PO Box 999, MS P7-07, 99352, Richland, WA, USA.

Analytical and Bioanalytical Chemistry
|June 1, 1996
PubMed
Summary

Inductively coupled plasma ion trap mass spectrometry (ICP-ITMS) offers improved analytical atomic spectroscopy by reducing polyatomic ions. Direct coupling of ICP and ion trap enhances performance, paving the way for advanced detection methods.

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Area of Science:

  • Analytical Chemistry
  • Atomic Spectroscopy
  • Mass Spectrometry

Background:

  • Ion trap devices are increasingly utilized in analytical atomic spectroscopy.
  • Inductively coupled plasma (ICP) ion sources coupled with ion trap mass spectrometry (ITMS) show promise.
  • Conventional ICP/MS instruments face challenges with polyatomic interferences.

Purpose of the Study:

  • To investigate the performance of ICP-ITMS systems for analytical atomic spectroscopy.
  • To evaluate the benefits of direct coupling between ICP and ion trap devices.
  • To explore methods for enhancing ICP-ITMS sensitivity and selectivity.

Main Methods:

  • Development and testing of a direct-coupled ICP-ITMS instrument.
  • Comparison of the direct-coupled ICP-ITMS with a conventional ICP/MS and an initial ICP-ITMS setup.

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  • Application of broadband resonance excitation techniques for sensitivity and selectivity improvements.

    • Main Results:

    • The ICP-ITMS system effectively destroyed problematic polyatomic ions and reduced Ar+ ions.
    • Direct coupling preserved the performance benefits of the initial ICP-ITMS system.
    • Broadband resonance excitation showed potential for enhancing sensitivity and selectivity.

    Conclusions:

    • Direct-coupled ICP-ITMS is a viable and improved approach for analytical atomic spectroscopy.
    • The technology offers significant advantages in reducing spectral interferences.
    • Future research may involve laser optical detection for further analytical advancements.