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Volume 13 Issue 4
Dec.  2011
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TU Cai, YUAN Xin-qiang. A Tentative Analysis of Calibration Free-Laser Induced Breakdown Spectroscopy for Quality Inspection of Gold Jewelry[J]. Journal of Gems & Gemmology, 2011, 13(4): 1-6.
Citation: TU Cai, YUAN Xin-qiang. A Tentative Analysis of Calibration Free-Laser Induced Breakdown Spectroscopy for Quality Inspection of Gold Jewelry[J]. Journal of Gems & Gemmology, 2011, 13(4): 1-6.
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A Tentative Analysis of Calibration Free-Laser Induced Breakdown Spectroscopy for Quality Inspection of Gold Jewelry

  • Gemmological Institute, China University of Geosciences, Wuhan 430074, China

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  • Received Date: May 29, 2011
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    • Abstract
  • In this paper，the feasibility of using calibration free－laser induced breakdown spectroscopy for quality inspection of gold jewelry was proved by using this method to analyze a series of gold alloy samples.The samples were induced by an Nd∶YAG pulse laser beam with a wavelength of 1 064nm，and the atomic spectrum in the range of 200—760nm was recorded by a fiber spectrometer with 4CCD.Six standard gold alloy samples with the gold contents from 85.0%to 99.6%were used in the experiment.The laser induced breakdown spectra were gathered and the atomic and irons lines of elements Au，Cu，Ag in these spectra were chosen for calibration free analysis model.Saha－Boltzmann plots were obtained and content of these three elements was achieved for all samples.The relative error of the main element Au was less than 3%.
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    • References (13)
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