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Issue 11, 2017
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Evaluation of the self-absorption reduction of minor elements in laser-induced breakdown spectroscopy assisted with laser-stimulated absorption

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Abstract

Reducing self-absorption is one of the most important steps in achieving accurate analyses in laser-induced breakdown spectroscopy (LIBS). In this work, LIBS assisted with laser-stimulated absorption (LSA-LIBS) was used to reduce self-absorption effects in LIBS. A wavelength-tunable laser was used to resonantly excite cold atoms and reduce their amount in laser-induced plasmas, and thus fewer cold atoms at the plasma periphery re-absorb light from the plasma center. Accordingly, the self-absorption effect was reduced. Copper (Cu) and chromium (Cr) elements in steels were taken as examples to evaluate and compare the self-absorption effects in LIBS and LSA-LIBS. The results of calculated self-absorption coefficients (SAs) supported the effectiveness in reducing self-absorption and improving analytical linearity using LSA-LIBS.

Graphical abstract: Evaluation of the self-absorption reduction of minor elements in laser-induced breakdown spectroscopy assisted with laser-stimulated absorption

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Article information


Submitted
31 May 2017
Accepted
21 Aug 2017
First published
21 Aug 2017

J. Anal. At. Spectrom., 2017,32, 2189-2193
Article type
Paper

Evaluation of the self-absorption reduction of minor elements in laser-induced breakdown spectroscopy assisted with laser-stimulated absorption

J. Li, Y. Tang, Z. Hao, N. Zhao, X. Yang, H. Yu, L. Guo, X. Li, X. Zeng and Y. Lu, J. Anal. At. Spectrom., 2017, 32, 2189
DOI: 10.1039/C7JA00199A

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