Chinese Optics, Volume. 15, Issue 4, 712(2022)
Measurement of Sm in rare earth mineral soil using laser-induced breakdown spectroscopy
Fig. 2. LIBS Spectra of (a) soil samples with five Sm2O3 content gradients and (b) 6# pure Sm2O3 sample, (c) the spectra of 1# and 5# samples in the wavelength ranges of 380−407 nm and 550−620 nm
Fig. 4. (a) Peak area and (b) SBR of the emission lines as a function of pulse energy
Fig. 5. (a) Multiple-Lorentz Fitting Method (MFM) with backgroud subtraction and (b) Concatenation-based Integration Method (CIM) with background retention used for calculating the peak area
Fig. 6. Univariate calibration curves constructed by using the peak area obtained by MFM and CIM for (a) Sm II 410 nm-band and (b) Sm II 470.44 nm, respectively
Fig. 7. (a) The LIBS-concentration of Sm according to the calibration curve and (b) the relative deviation for sample 3
Table 1. The value of
R 2 and fitting parameters from the calibration curves constructed by leave-one-out methodView tableView in ArticleTable 1. The value of
R 2 and fitting parameters from the calibration curves constructed by leave-one-out method410 nm-band 470.44 nm MFM CIM MFM CIM a 57.260 58.137 -20.286 1.798 b 10.067 28.323 28.785 40.999 R2 0.9905 0.9989 0.9962 0.9976
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Xiao-liang LIU, Shao-hua SUN, Xiang-ting MENG, Xiao-yan LI, Yun-hai LIU. Measurement of Sm in rare earth mineral soil using laser-induced breakdown spectroscopy[J]. Chinese Optics, 2022, 15(4): 712
Category: Original Article
Received: Mar. 14, 2022
Accepted: --
Published Online: Sep. 6, 2022
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