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 1064.0000nm 45.0000mJ 1.000Hz |
||||
| 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 |