LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Determination of Rare Earth Elements in Geological Samples Using Laser-Induced Breakdown Spectroscopy (LIBS) Jagdish P. Singh, Dustin L McIntyre, Christian L Goueguel, Jinesh C Jain, Chet R Bhatt Geological Princeton Instruments ICCD Max ARYELLE
Laser: Nd:YAG
Gate Delay: 2.000us
Gate Width: 7.000us
Natural Rare Earth Element ores/minerals are analysed using LIBS. Analysis is taken under flowing Ar to improve detection limits and remove ablated material from re-analysis. Spectral lines for Y, Pr, Sm, Eu, Gd and Dy were determined but no quantitative analysis was performed. To improve performance, Partial Least Squares Regression is used in the Calibration model.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes

Element RMSE (ppm) Wavelength (nm) Calibration Method Notes
La 0.3200 % -10.0000 PLS Peaks in the range 320-650nm were used for PLS analysis of La.
Nd 0.2400 % -10.0000 PLS Spectra segment from 345-575nm were used for the PLS model for this analysis
Ce 0.3600 % -10.0000 PLS Spectra in the wavelength range of 300-700nm were used to build the PLS model for this analysis