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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

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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.

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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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[Application of wavelet transform in laser-induced breakdown spectra compression].

Mei-cheng Jiang1, Ji-dong Lu, Shun-chun Yao

  • 1Power Electric College, South China University of Technology, Guangzhou 510640, China. jmcjmc@qq.com

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|December 9, 2010
PubMed
Summary

Wavelet transform (WT) effectively compresses laser-induced breakdown spectroscopy (LIBS) coal spectral data. This method reduces storage needs while preserving key spectral features, proving highly effective for coal analysis.

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Area of Science:

  • Analytical Chemistry
  • Spectroscopy
  • Data Science

Context:

  • Laser-induced breakdown spectroscopy (LIBS) generates large spectral datasets for coal analysis.
  • Efficient data compression is crucial for managing and analyzing LIBS spectral data.
  • Wavelet transform (WT) is a signal processing technique with potential for data compression.

Purpose:

  • To develop and evaluate a wavelet transform (WT)-based method for compressing laser-induced breakdown coal spectral data.
  • To identify optimal WT parameters (db wavelet order, decomposition level, threshold method) for effective compression.
  • To assess the compression performance using compression scores and spectral line relative deviation.

Summary:

  • A novel method utilizing wavelet transform (WT) was developed for compressing laser-induced breakdown (LIB) coal spectral data.
  • Key parameters influencing compression performance were investigated, leading to a parameter selection rule.
  • The optimized scheme achieved high restoration (81%-92.11%) and compression scores (79.02%-92.07%) with minimal spectral line deviation (<5%).

Impact:

  • Significantly reduces storage requirements for LIBS coal spectral data.
  • Preserves the essential characteristics of the original spectral data post-compression.
  • Demonstrates the high effectiveness of WT for LIBS spectral data compression, facilitating broader application.