Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 65,
  • Issue 10,
  • pp. 1197-1201
  • (2011)

Extracting Coal Ash Content from Laser-Induced Breakdown Spectroscopy (LIBS) Spectra by Multivariate Analysis

Not Accessible

Your library or personal account may give you access

Abstract

Laser-induced breakdown spectroscopy (LIBS) combined with partial least squares (PLS) analysis has been applied for the quantitative analysis of the ash content of coal in this paper. The multivariate analysis method was employed to extract coal ash content information from LIBS spectra rather than from the concentrations of the main ash-forming elements. In order to construct a rigorous partial least squares regression model and reduce the calculation time, different spectral range data were used to construct partial least squares regression models, and then the performances of these models were compared in terms of the correlation coefficients of calibration and validation and the root mean square errors of calibration and cross-validation. Afterwards, the prediction accuracy, reproducibility, and the limit of detection of the partial least squares regression model were validated with independent laser-induced breakdown spectroscopy measurements of four unknown samples. The results show that a good agreement is observed between the ash content provided by thermo-gravimetric analyzer and the LIBS measurements coupled to the PLS regression model for the unknown samples. The feasibility of extracting coal ash content from LIBS spectra is approved. It is also confirmed that this technique has good potential for quantitative analysis of the ash content of coal.

PDF Article
More Like This
Extraction of information from laser-induced breakdown spectroscopy spectral data by multivariate analysis

Nicole Labbé, Isabel Maya Swamidoss, Nicolas André, Madhavi Z. Martin, Timothy M. Young, and Timothy G. Rials
Appl. Opt. 47(31) G158-G165 (2008)

Univariate and multivariate analyses of strontium and vanadium in soil by laser-induced breakdown spectroscopy

Cuiping Lu, Min Wang, Liusan Wang, Haiying Hu, and Rujing Wang
Appl. Opt. 58(27) 7510-7516 (2019)

Simultaneous analysis of Cr and Pb in contaminated pork by laser-induced breakdown spectroscopy

Mingyin Yao, Gangfu Rao, Lin Huang, Muhua Liu, Hui Yang, Jinyin Chen, and Tianbing Chen
Appl. Opt. 56(29) 8148-8153 (2017)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved