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.

A Tentative Analysis of Calibration Free-Laser Induced Breakdown Spectroscopy for Quality Inspection of Gold Jewelry

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  • Received Date: May 29, 2011
  • 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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