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Related Concept Videos

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.
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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Dependence of Laser-induced Breakdown Spectroscopy Results on Pulse Energies and Timing Parameters Using Soil Simulants
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Dependence of Laser-induced Breakdown Spectroscopy Results on Pulse Energies and Timing Parameters Using Soil Simulants

Published on: September 23, 2013

Effective laser-induced breakdown spectroscopy (LIBS) detection using double pulse at optimum configuration.

Soo Jin Choi1, Jack J Yoh

  • 1School of Mechanical and Aerospace Engineering, Seoul National University, Kwanakgu, Korea.

Applied Spectroscopy
|August 9, 2011
PubMed
Summary
This summary is machine-generated.

Double-pulse laser-induced breakdown spectroscopy (LIBS) significantly enhances signal intensity for analyzing materials in harsh environments. Optimizing target and detector angles further improves elemental detection for nonstandard samples.

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Area of Science:

  • Analytical Chemistry
  • Spectroscopy
  • Materials Science

Background:

  • Laser-induced breakdown spectroscopy (LIBS) rapidly determines chemical composition by analyzing plasma emission spectra.
  • LIBS plasma characteristics are sensitive to ambient conditions, limiting its application in harsh environments.
  • Enhancing LIBS signal intensity is crucial for expanding its utility in challenging exploration settings.

Purpose of the Study:

  • To investigate methods for enhancing LIBS signal intensity.
  • To optimize LIBS parameters for analyzing nonstandard samples in potentially harsh environments.
  • To improve the sensitivity and applicability of LIBS technology.

Main Methods:

  • Utilized a double-pulse LIBS configuration, comparing it to single-pulse LIBS.
  • Adjusted target and detector angles to simulate analysis of arbitrarily shaped samples.
  • Systematically varied LIBS parameters to identify optimal configurations for signal enhancement.

Main Results:

  • Achieved a five-fold enhancement in signal intensity for Aluminum (Al) and Calcium (Ca) lines using double-pulse LIBS compared to single-pulse.
  • Identified optimal target and detector angles for maximizing signal intensity for specific elements.
  • Demonstrated improved elemental detection for a nonstandard aluminum sample through optimized LIBS configurations.

Conclusions:

  • Double-pulse LIBS offers a significant advantage in signal intensity over single-pulse LIBS.
  • Geometric optimization (target and detector angles) is critical for maximizing LIBS performance.
  • The optimized LIBS system shows promise for rapid elemental analysis in challenging environments and for irregular sample geometries.