LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Chemical mapping of mine waste drill cores with laser-induced breakdown spectroscopy (LIBS) and energy dispersive X-ray fluorescence (EDXRF) for mineral resource exploration Kerstin Kuhn, Jeannet A. Meima, Dieter Rammlmair, Christian Ohlendorf Geological ARYELLE ARYELLE Sophi
Laser: Nd:YAG
1064.0000nm
55.0000mJ
20.000Hz
Gate Delay: 1.500us
Gate Width: Noneus
In this paper geological/mine core samples are analysed with both LIBS and Energy Dispersive XRF. These results are calibrated using data obtained from Wavelength Dispersive XRF analysis of sub-samples taken from the core. Univariate and PLS methods are tried for this calibration, but PLS gave significantly better results (for both LIBS and EDXRF). The results were tested using half the samples for PLS calibration, then the other half as test/comparison samples. Results are good, but are dependent on the calibration against samples from the same core.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes


Element RMSE (ppm) Wavelength (nm) Calibration Method Notes
Ca 0.2700 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed
Si 1.9300 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed
Fe 0.2300 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed
Al 1.1700 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed
K 0.2500 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed
Na 0.0100 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed
Ti 0.0400 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed
Ba 0.0030 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed
Pb 0.0800 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed
Zn 0.0600 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed
Cu 0.0030 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed
Co 0.0020 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed
Ni 0.0030 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed
S 0.1200 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed
Mn 0.0200 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed
Mg 0.1600 % -10.0000 Partial Least Squares Calibration Samples are from the same drill core as then analysed