LIBS Info: Element Analysis
| Title | Authors | Material | Detector | Spectrometer | Software |
|---|---|---|---|---|---|
| On the compositional analysis of Coal using calibration free laser induced breakdown spectroscopy | M.A. Baig, Z A Umar, N Ahmed, Zaheer Uddin, Sh M Z Iqbal | Coal | Ocean Optics HR4000 | Ocean Optics HR4000 | |
| Laser: | Nd:YAG 532.0000nm 500.0000mJ 10.000Hz |
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| Gate Delay: | Noneus | ||||
| Gate Width: | Noneus | ||||
| The authors analyse pressed coal pellets using the IRSAC CF LIBS Method. Results are obtained for a reference Coal (SARM 20) and a local Thar Coal. | |||||
| Element | Detection Limit (ppm) | Wavelength (nm) | Other Wavelengths (nm) | Calibration Method | Calibration Range (ppm) | Notes |
|---|
| Element | RMSE (ppm) | Wavelength (nm) | Calibration Method | Notes |
|---|---|---|---|---|
| Li | 0.2800 % | -10.0000 | CF-LIBS | Comparison of CF-LIBS (IRSAC Method) to Certified values for pressed pellet analysis. Reference Value: 9ppm (that is, CF LIBS value significantly higher than actual value, but may give useful upper limit) |
| Na | 0.6700 % | -10.0000 | CF-LIBS | Comparison of CF-LIBS (IRSAC Method) to Certified values for pressed pellet analysis. Reference Value: 0.2% |
| Ba | 0.1800 ppm | -10.0000 | CF-LIBS | Comparison of CF-LIBS (IRSAC Method) to Certified values for pressed pellet analysis. Reference Value: 0.37ppm |
| Mn | 0.8700 ppm | -10.0000 | CF-LIBS | Comparison of CF-LIBS (IRSAC Method) to Certified values for pressed pellet analysis. Reference Value: 0.08ppm |
| Sr | 0.0400 ppm | -10.0000 | CF-LIBS | Comparison of CF-LIBS (IRSAC Method) to Certified values for pressed pellet analysis. Reference Value: 0.33ppm |
| K | 1.2100 % | -10.0000 | CF-LIBS | Comparison of CF-LIBS (IRSAC Method) to Certified values for pressed pellet analysis. Reference Value: 0.11% |
| Ti | 0.3300 % | -10.0000 | CF-LIBS | Comparison of CF-LIBS (IRSAC Method) to Certified values for pressed pellet analysis. Reference Value: 0.37% |
| Mg | 0.2100 % | -10.0000 | CF-LIBS | Comparison of CF-LIBS (IRSAC Method) to Certified values for pressed pellet analysis. Reference Value: 0.25% |
| Al | 1.2100 % | -10.0000 | CF-LIBS | Comparison of CF-LIBS (IRSAC Method) to Certified values for pressed pellet analysis. Reference Value: 5.96% |
| Ca | 0.0050 % | -10.0000 | CF-LIBS | Comparison of CF-LIBS (IRSAC Method) to Certified values for pressed pellet analysis. No difference to reference value [1.34%] found to resolution available, hence RMSEP is maximum estimate. |
| Si | 2.7500 % | -10.0000 | CF-LIBS | Comparison of CF-LIBS (IRSAC Method) to Certified values for pressed pellet analysis. Reference Value: 8.25% |
| C | 3.2600 % | -10.0000 | CF-LIBS | Comparison of CF-LIBS (IRSAC Method) to Certified values for pressed pellet analysis. Reference Value: 82.46%, so % error is comparatively small. |
| Fe | 0.2000 % | -10.0000 | CF-LIBS | Comparison of CF-LIBS (IRSAC Method) to Certified values for pressed pellet analysis. |