Can electron energy-loss spectroscopy (EELS) be used to quantify hydrogen in minerals from the O K edge?

Research output: Contribution to journalArticle

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Abstract

The proposition has been made and is now gaining popular acceptance that electron energy-loss spectroscopy (EELS) attached to a transmission electron microscope (TEM) can be used to semiquantitatively measure H in minerals-specifically, that there is a pre-peak to the O K edge near 530 eV whose intensity is a measure of H concentration in OH- and H2O- bearing minerals. I show here that the O K edges from H-bearing minerals, free of electron-beam damage, lack, a peak near 530 eV. Instead, under electron irradiation, in the TEM, a transient peak, near 530 eV can form in H-bearing as well as anhydrous minerals. The intensity of the transient peak is dependent on total fluence and fluence rate. The origin of the radiation-induced peak at 530 eV is from O2 liberated during damage by the incident, electron beam. In conclusion, there is no evidence for an OH peak near 530 eV from H-bearing minerals.

Original languageEnglish (US)
Pages (from-to)92-97
Number of pages6
JournalAmerican Mineralogist
Volume95
Issue number1
DOIs
StatePublished - Jan 1 2010

Fingerprint

Bearings (structural)
Electron energy loss spectroscopy
Minerals
Hydrogen
energy dissipation
spectroscopy
minerals
hydrogen
electron energy
electron
mineral
energy
Electron beams
Electron microscopes
fluence
electron microscopes
Electron irradiation
electron beams
damage
electron irradiation

Keywords

  • Beam damage
  • EELS
  • Hydrogen
  • TEM

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Can electron energy-loss spectroscopy (EELS) be used to quantify hydrogen in minerals from the O K edge? / Garvie, Laurence.

In: American Mineralogist, Vol. 95, No. 1, 01.01.2010, p. 92-97.

Research output: Contribution to journalArticle

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