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Applied Spectroscopy

Applied Spectroscopy

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  • Vol. 67, Iss. 11 — Nov. 1, 2013
  • pp: 1275–1284

Line Selection and Parameter Optimization for Trace Analysis of Uranium in Glass Matrices by Laser-Induced Breakdown Spectroscopy (LIBS)

Inhee Choi, George C.-Y. Chan, Xianglei Mao, Dale L. Perry, and Richard E. Russo

Applied Spectroscopy, Vol. 67, Issue 11, pp. 1275-1284 (2013)


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Abstract

Laser-induced breakdown spectroscopy (LIBS) has been evaluated for the determination of uranium in real-world samples such as uraninite. NIST Standard Reference Materials were used to evaluate the spectral interferences on detection of uranium. The study addresses the detection limit of LIBS for several uranium lines and their relationship to non-uranium lines, with emphasis on spectral interferences. The data are discussed in the context of optimizing the choice of emission lines for both qualitative and quantitative analyses from a complex spectrum of uranium in the presence of other elements. Temporally resolved spectral emission intensities, line width, and line shifts were characterized to demonstrate the parameter influence on these measurements. The measured uranium line width demonstrates that LIBS acquired with moderately high spectral resolution (e.g., by a 1.25 m spectrometer with a 2400 grooves/mm grating) can be utilized for isotope shift measurements in air at atmospheric pressure with single to tens of parts per million (ppm) level detection limits, as long as an appropriate transition is chosen for analysis.

Citation
Inhee Choi, George C.-Y. Chan, Xianglei Mao, Dale L. Perry, and Richard E. Russo, "Line Selection and Parameter Optimization for Trace Analysis of Uranium in Glass Matrices by Laser-Induced Breakdown Spectroscopy (LIBS)," Appl. Spectrosc. 67, 1275-1284 (2013)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-67-11-1275


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