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Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

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Dependence of Laser-induced Breakdown Spectroscopy Results on Pulse Energies and Timing Parameters Using Soil Simulants
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Glow-discharge-assisted laser-induced breakdown spectroscopy: increased sensitivity in solid analysis.

K A Tereszchuk1, J M Vadillo, J J Laserna

  • 1Department of Analytical Chemistry, University of Malaga, 29071 Malaga, Spain.

Applied Spectroscopy
|November 15, 2008
PubMed
Summary
This summary is machine-generated.

A novel dual glow-discharge laser-induced breakdown spectroscopy (GD-LIBS) technique enhances material excitation. This method reduces laser energy, minimizes sample damage, and improves spatial resolution for detailed analysis.

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Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
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Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown

Published on: February 14, 2014

Area of Science:

  • Analytical Chemistry
  • Atomic Spectroscopy
  • Materials Science

Background:

  • Laser-induced breakdown spectroscopy (LIBS) is a powerful analytical technique.
  • Excitation and ionization thresholds of materials often require high laser pulse energies, leading to sample damage.
  • Glow discharge (GD) offers an alternative excitation method.

Purpose of the Study:

  • To develop a synchronous dual glow-discharge laser-induced breakdown spectroscopy (GD-LIBS) system.
  • To investigate the potential for reduced laser pulse energies.
  • To enhance signal intensity and improve spatial resolution in material analysis.

Main Methods:

  • A steady-state and pulsed glow discharge was coupled with a pulsed laser ablation system.
  • Material ablated by laser pulses was subsequently excited by the glow discharge.
  • Critical parameters including gas pressure, gas type, and discharge voltage were systematically evaluated.

Main Results:

  • The dual GD-LIBS scheme demonstrated significant signal enhancements compared to standalone LIBS or GD.
  • Reduced laser pulse energies, potentially below excitation and ionization thresholds, were achievable.
  • The technique showed potential for spatially resolved analysis with improved lateral resolution and reduced sample damage.

Conclusions:

  • The synchronous GD-LIBS system offers a significant advancement for material analysis.
  • This method allows for lower laser energy requirements, preserving sample integrity.
  • The technique is promising for high-resolution, spatially resolved elemental analysis.