LIBS Info: Element Analysis
| Title | Authors | Material | Detector | Spectrometer | Software |
|---|---|---|---|---|---|
| Multi-elemental analysis of solidified mineral melt samples by Laser-Induced Breakdown Spectroscopy coupled with a linear multivariate calibration | Stephane Laville, M. Sabsabi, Francois R. Doucet | Glass | Kodak KAF 1001 | ESA 3000 | |
| Laser: | Nd:YAG 1064.0000nm 100.0000mJ 0.240Hz |
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| Gate Delay: | 4.000us | ||||
| Gate Width: | 10.000us | ||||
| Traditional Univariate and a new multivariate model are compared for the analysis of (glass) mineral melt samples. Unusual also is the measurement of minor and major components (rather than the more usual trace). The multivariate model uses the ratioed intensity and intensity squared of all the 5 elements in the prediction of each element (ie. the Ti calibration contains Ti, Ca, Si, Fe and Mg peaks). Significant improvement is obtained over traditional univariate calibration, with particularly good results on test samples not used in the original calibration. | |||||
| Element | Detection Limit (ppm) | Wavelength (nm) | Other Wavelengths (nm) | Calibration Method | Calibration Range (ppm) | Notes |
|---|
| Element | RMSE (ppm) | Wavelength (nm) | Calibration Method | Notes |
|---|---|---|---|---|
| Al | 1.4000 % | -10.0000 | Multivariate Calibration | Calibration uses intensities ratioed to Si (at 390.553nm) from all elements in the prediction of the other elements. |
| Fe | 1.3600 % | -10.0000 | Multivariate Calibration | Calibration uses intensities ratioed to Si (at 390.553nm) from all elements in the prediction of the other elements. |
| Mg | 1.0600 % | -10.0000 | Multivariate Calibration | Calibration uses intensities ratioed to Si (at 390.553nm) from all elements in the prediction of the other elements. |
| Ca | 0.8800 % | -10.0000 | Multivariate Calibration | Calibration uses intensities ratioed to Si (at 390.553nm) from all elements in the prediction of the other elements. |
| Ti | 0.1700 % | -10.0000 | Multivariate Calibration | Calibration uses intensities ratioed to Si (at 390.553nm) from all elements in the prediction of the other elements. |
| Si | 2.0800 % | -10.0000 | Multivariate Calibration | Calibration uses intensities ratioed to Si (at 390.553nm) from all elements in the prediction of the other elements. |