Electron Probe Microanalyser (EPMA)


Electron Probe Microanalyser (EPMA)

EPMA is a powerful, non-destructive analytical technique used for the qualitative and quantitative determination of the surface chemical composition of small volumes of solid materials. Elements from B to U (and above) can routinely be analyzed using EPMA, with a detection limit of a few hundred ppm. While nearly any solid material can be measured, EPMA requires samples to be polished flat as standard-size rectangular sections or in 1-inch round disks.

Since its installation ca. 3 years ago, the EPMA has been routinely used to obtain SE and BSE images, WDS quantitative analyses; EDS sample identification and semi-quantitative analyses; and X-Ray and CL maps for a variety of geological samples. All samples are carbon coated to 200A thickness in the lab using our Cressington 208C carbon coater with good results. Users of the facility include commercial (government) clients, faculty researchers, graduate students, undergraduate Honors students, undergraduate students for class projects and visiting researchers from other universities. Academic research in geology and chemistry has been undertaken in this lab. Instrument performance is monitored by measuring a suite of standards and secondary standards.

Our JEOL JXA-8230 EPMA is equipped with an interchangeable tungsten or LaB6 source, 5 wavelength dispersive spectrometers, a Thermo energy dispersive spectrometer and an xCLent IV cathodoluminescence spectrometer.

Research Facility

EPMA-SEM-XRD Laboratory - The Earth Resources Research and Analysis (TERRA) Facility - CREAIT Network
Memorial University
St. John's
Newfoundland and Labrador (NL)

Along with a Rigaku powder X-ray diffractometer (PXRD), this laboratory features a pair of new, state-of-the-art analytical instruments from JEOL: an electron probe microanalyzer (EPMA) and a scanning electron microscope (SEM).

  • Astronomy and Physics
  • Biological and Life Sciences
  • Biomedical
  • Biotechnology
  • Chemistry and Biochemistry
  • Engineering - Agricultural, Forest, Environmental, Mining, Mineral
  • Engineering - Civil, Structural
  • Engineering - Industrial, Mechanical, Electrical
  • Environmental and Earth Sciences
  • Marine/Ocean Sciences
  • Biomedical
  • Biotechnology
  • Automotive
  • Chemical Industries
  • Clean Technology
  • Energy (Renewable and Fossil)
  • Mining, Minerals and Metals
  • Ocean Industries

Industry Liaison Officer

Matt Grimes
Technology Commercialization Officer


Wanda Aylward Primary Contact
Research Laboratory Associate
Brent Myron
Manager of Operations - CREAIT Network

Date submitted: Wed, Mar 8, 2017 9:03 PM
Date updated: Wed, Mar 8, 2017 9:04 PM

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