Dec 1, 1974

Elemental analysis of asbestos fibers by means of electron probe techniques

Environmental Health Perspectives
I B Rubin, C M Maggiore

Abstract

The identification and characterization of microparticles has become an important field of study in recent years due to their presence in the environment and association with pathogenesis. Asbestos fibers have been intensively studied for these reasons. Since conventional microscopy has not provided unique identification of these materials, electron probe microanalysis, which yields chemical data, has been utilized in conjunction with other techniques to provide the necessary answers.The options now available to undertake electron probe analysis are discussed with relation to their utilization for microparticle analyses. Two types of electron sources are available, thermionic and field emission. The x-ray spectroscopy requires the use of either wavelength-dispersive focussing crystal spectrometers or an energy-dispersive Si(Li) x-ray detector. Data are presented to demonstrate the feasibility of asbestos identification by using modified raw data obtained with a scanning electron microscope and energy-dispersive x-ray spectrometer. Further, the extension of the technique to other microparticle identification problems is discussed.

  • References11
  • Citations6

References

  • References11
  • Citations6

Citations

Mentioned in this Paper

Lung
Air Pollutants, Environmental
Asbestos
Electron Probe Microanalysis
Use-Effectiveness
Spectrometry
Scanning Electron Microscopy

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