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Related Experiment Videos

Quantitative elemental mapping of biomedical specimens using the nuclear microprobe

J Pallon1, J Knox

  • 1Lund Institute of Technology, Sweden.

Scanning Microscopy
|December 1, 1993
PubMed
Summary

A new nuclear microprobe technique creates quantitative elemental maps faster than traditional spectral fitting. This method improves sample throughput and reduces spectral overlap artifacts for elemental analysis.

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Area of Science:

  • Materials Science
  • Nuclear Physics
  • Analytical Chemistry

Background:

  • Nuclear microprobe analysis provides quantitative and structural elemental information.
  • Traditional spectral fitting at each point is time-consuming, limiting sample throughput.

Purpose of the Study:

  • To propose an alternative technique for elemental analysis using nuclear microprobe data.
  • To significantly shorten the analysis procedure and increase the number of processed samples.

Main Methods:

  • Developing a method to create elemental maps.
  • Dividing elemental maps by charge/pixel and multiplying by a scaling factor to generate quantitative maps.
  • Obtaining scaling factors through calibration comparing fitted X-ray spectra with energy window contents.

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Main Results:

  • The proposed technique drastically reduces analysis time compared to point-by-point spectral fitting.
  • Elemental maps can be converted into quantitative maps.
  • The method allows for the reduction of artifacts caused by spectral overlap.

Conclusions:

  • This novel approach offers a more efficient method for quantitative elemental mapping using nuclear microprobes.
  • The technique enhances sample throughput and data quality by minimizing spectral overlap issues.