Laser Induced Breakdown Spectroscopy (LIBS)

Laser-Induced Breakdown Spectroscopy (LIBS) analyzers use laser-based optical emission spectrometry to analyze elemental composition of various materials. First practical application was developed in 1980 and now it used in Military, Industrial and Medical applications.

It is worth mentioning that NASA rover are equipped with LIBS instrument for chemical analysis of rocks in Mars.

Operation Principles:

1.Pulsed laser beam is focused on the material

2. Solid/liquid material transforms to plasma around the focus point

3.When cooling, the plasma emits light

4.Spectrometer collects this light and produces a wavelength-based spectrum

Nasa Rover on Mars
This artists concept depicts the rover Curiosity as it uses its Chemistry and Camera (ChemCam) instrument to investigate the composition of a rock surface.

5.Chemical analysis of all elements and minerals is calculated based on spectral data

6.The process can be repeated thousands of times per minute to providing a representative measurement of bulk flow

Technology for Online Chemical Analysis

LIBS Advantages

• Simultaneous quantitative analysis of all the elements, including the light ones (C, Si, Mg, Al, etc…)
• No radiation – absolutely safe for the personnel and doesn’t require any licenses
• High accuracy and low detection limit  due to the clear spectral lines of most of the elements in a wide optical range.

 

LIBS Online Analyzer Advantages

• No sample preparation required
• The result of analysis does not depend on the quality of the surface of the analyzed material, size of the pieces and thickness of the layer
• Low operational and maintenance cost

 

Simultaneous measurement directly above conveyor or liquid flow. Materials:

•Raw ore
•Dry raw mix
•Slurry/Brine
•And more …

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