Abstract：The authors tried to find a method for quantitative analysis using pXRF without solid bulk stone/jade reference samples. 24 nephrite samples were selected, 17 samples were calibration samples and the other 7 are test samples. All the nephrite samples were analyzed by Proton induced X-ray emission spectroscopy (PIXE) quantitatively. Based on the PIXE results of calibration samples, calibration curves were created for the interested components/elements and used to analyze the test samples quantitatively; then, the qualitative spectrum of all nephrite samples were obtained by pXRF. According to the PIXE results and qualitative spectrum of calibration samples, partial least square method (PLS) was used for quantitative analysis of test samples. Finally, the results of test samples obtained by calibration method, PLS method and PIXE were compared to each other. The accuracy of calibration curve method and PLS method was estimated. The result indicates that the PLS method is the alternate method for quantitative analysis of stone/jade samples.
Key words：XRF;Calibration curve;Partial least squares regression analysis;Nephrite
刘 松1，苏伯民2，李青会1，干福熹1 . 工作曲线法和偏最小二乘回归分析在XRF定量分析软玉样品中的应用 [J]. 光谱学与光谱分析, 2015, 35(01): 245-251.
LIU Song1, SU Bo-min2, LI Qing-hui1, GAN Fu-xi1 . Application of Calibration Curve Method and Partial Least Squares Regression Analysis to Quantitative Analysis of Nephrite Samples Using XRF. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(01): 245-251.
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