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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 7 — Mar. 1, 2012
  • pp: B121–B129

Comparative study of Nd:YAG laser-induced breakdown spectroscopy and transversely excited atmospheric CO2 laser-induced gas plasma spectroscopy on chromated copper arsenate preservative-treated wood

Ali Khumaeni, Zener Sukra Lie, Hideaki Niki, Yong Inn Lee, Kazuyoshi Kurihara, Motoomi Wakasugi, Touru Takahashi, and Kiichiro Kagawa  »View Author Affiliations


Applied Optics, Vol. 51, Issue 7, pp. B121-B129 (2012)
http://dx.doi.org/10.1364/AO.51.00B121


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Abstract

Taking advantage of the specific characteristics of a transversely excited atmospheric (TEA) CO2 laser, a sophisticated technique for the analysis of chromated copper arsenate (CCA) in wood samples has been developed. In this study, a CCA-treated wood sample with a dimension of 20mm×20mm and a thickness of 2 mm was attached in contact to a nickel plate (20mm×20mm×0.15mm), which functions as a subtarget. When the TEA CO2 laser was successively irradiated onto the wood surface, a hole with a diameter of approximately 2.5 mm was produced inside the sample and the laser beam was directly impinged onto the metal subtarget. Strong and stable gas plasma with a very large diameter of approximately 10 mm was induced once the laser beam had directly struck the metal subtarget. This gas plasma then interacted with the fine particles of the sample inside the hole and finally the particles were effectively dissociated and excited in the gas plasma region. By using this technique, high precision and sensitive analysis of CCA-treated wood sample was realized. A linear calibration curve of Cr was successfully made using the CCA-treated wood sample. The detection limits of Cr, Cu, and As were estimated to be approximately 1, 2, and 15mg/kg, respectively. In the case of standard LIBS using the Nd:YAG laser, the analytical intensities fluctuate and the detection limit was much lower at approximately one-tenth that of TEA CO2 laser.

© 2012 Optical Society of America

History
Original Manuscript: October 5, 2011
Revised Manuscript: January 16, 2012
Manuscript Accepted: January 26, 2012
Published: February 24, 2012

Citation
Ali Khumaeni, Zener Sukra Lie, Hideaki Niki, Yong Inn Lee, Kazuyoshi Kurihara, Motoomi Wakasugi, Touru Takahashi, and Kiichiro Kagawa, "Comparative study of Nd:YAG laser-induced breakdown spectroscopy and transversely excited atmospheric CO2 laser-induced gas plasma spectroscopy on chromated copper arsenate preservative-treated wood," Appl. Opt. 51, B121-B129 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-7-B121

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