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What’s EPMA ?

Electron Probe Micro Analyzer(EPMA) is one of the instruments to analyze solid substances. EPMA works by bombarding a sample with an accelerated and focused electron beam that cause various interactions between the electron of beam and the atoms of all elements included in the sample.

EPMA can do fully qualitative and quantitative analysis at the micro-sized volumes of the surface of sample. Generally most of analytical instruments can do only qualitative and quantitative analysis, but EPMA has more analysis modes than any other instruments. Not only qualitative and quantitative analysis but also EPMA can do line analysis, mapping analysis and state analysis.

  

Fig 1. Show bombarding a sample with an accelerated and focused electron beam

Fig 2. Results of qualitative and quantitative analysis by EPMA

    

Fig 3. Results of mapping analysis

EPMA is the hybrid instrument combining the capabilities of  SEM (scanning electron microscope) and elemental analyzer but EPMA provides much better results compared with SEM/EDS by WDS (EDS) spectrum, higher spectrum resolution and sensitivity.

Fig 4. Model EPMA-1720H and EPMA-8050G commonly of Shimadzu

Today EPMA is widely used for Q&A and R&D in various fields, please refer below table.

Fields

Main  Applications

Mining

Ore analysis, etc.

Construction

Concrete analysis (reaction to alkaline aggregates, sale damage, etc.)

Fibers

Distribution of particles contained among fibers (for commuter footwear)

Pulp and Paper

Observation and analysis of coated paper cross sections, etc.

Pharmaceuticals

Analysis of foreign matter content, discoloration, or other defects, new drug development, etc.

Rubber Products

Analysis of foreign matter content, discoloration, or other defects, new material development, etc.

Ceramics (glass, etc.)

Analysis of glass striae or other defects, new material development, etc.

Steel

Analysis of segregation, inclusions, or other defects, new material development, etc.

Nonferrous Metals

Analysis of segregation, inclusions, or other defects, new material development, etc.

Electrical/Electronic Goods

Defect analysis at the part level or new product development

Transportation Equipment

Defect analysis at the part level or research of LIB/catalysts, etc.

Electricity and Gas

Catalyst and other energy-related research

Please contact us for advice and more information.

(Reference from application News - Shimadzu Corporation)

Source: ETA

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