Background removal in soil analysis using laserinduced breakdown spectroscopy combined with standard addition method

R. X. Yi, L. B. Guo, X. H. Zou, J. M. Li, Z. Q. Hao, X. Y. Yang, X. Y. Li, X. Y. Zeng, Y. F. Lu

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The matrix effect of powder samples, especially for soil samples, is significant in laser-induced breakdown spectroscopy (LIBS), which affects the prediction accuracy of the element concentration. In order to reduce this effect of the soil samples in LIBS, the standard addition method (SAM) based on background removal by wavelet transform algorithm was investigated in this work. Five different kinds of certified reference soil samples (lead (Pb) concentrations were 110, 283, 552, 675, and 1141 ppm, respectively) were used to examine the accuracy of this method. The root mean square error of prediction (RMSEP) was more than 303 ppm by using the conventional calibration method. After adoption of SAM with background removal by wavelet transform algorithm, the RMSEP was reduced to 25.7 ppm. Therefore, the accuracy of the Pb element was improved significantly. The mechanism of background removal by wavelet transform algorithm based on SAM is discussed. Further study demonstrated that this method can also improve the predicted accuracy of the Cd element.

Original languageEnglish (US)
Pages (from-to)2607-2618
Number of pages12
JournalOptics Express
Volume24
Issue number3
DOIs
StatePublished - Feb 8 2016

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soils
breakdown
wavelet analysis
laser-induced breakdown spectroscopy
root-mean-square errors
spectroscopy
predictions
matrices

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Background removal in soil analysis using laserinduced breakdown spectroscopy combined with standard addition method. / Yi, R. X.; Guo, L. B.; Zou, X. H.; Li, J. M.; Hao, Z. Q.; Yang, X. Y.; Li, X. Y.; Zeng, X. Y.; Lu, Y. F.

In: Optics Express, Vol. 24, No. 3, 08.02.2016, p. 2607-2618.

Research output: Contribution to journalArticle

Yi, R. X. ; Guo, L. B. ; Zou, X. H. ; Li, J. M. ; Hao, Z. Q. ; Yang, X. Y. ; Li, X. Y. ; Zeng, X. Y. ; Lu, Y. F. / Background removal in soil analysis using laserinduced breakdown spectroscopy combined with standard addition method. In: Optics Express. 2016 ; Vol. 24, No. 3. pp. 2607-2618.
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