LIBS Info: Element Analysis
| Title | Authors | Material | Detector | Spectrometer | Software |
|---|---|---|---|---|---|
| Development of a method for automated quantitative analysis of ores using LIBS | S. Rosenwasser, G. Asimellis, B. Bromley, R. Hazlett, J. Martin, T. Pearce, A. Zigler | Mineral Ore | Tracer 2100 | Tracer 2100 | |
| Laser: | Nd:YAG 1064.0000nm NonemJ 10.000Hz |
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| Gate Delay: | Noneus | ||||
| Gate Width: | Noneus | ||||
| Mineral Ore samples were mixed, then hand ground, then pressed at 18000psi for one minute to form pellets for analyis. Some of the samples were also oven dried for 15-20 minutes, although this produced little loss in mass (<0.04g). Drying, however, did seem to improve the measurement RSD. Details on calibration conditions for P, Ca, Al, Mg and Si are all described (but no LODs!). Results show good comparison to ICP results on NIST standard samples | |||||
| Element | Detection Limit (ppm) | Wavelength (nm) | Other Wavelengths (nm) | Calibration Method | Calibration Range (ppm) | Notes |
|---|---|---|---|---|---|---|
| P | 1600.0000 (Minimum concentration detected) | 255.3200 | 253.56 | Univariate Calibration | -10.0000--10.0000 | Despite the 253.56nm peak being stronger, the 255.32nm one was chosen as it was more linear at P2O5 concentrations below 15%. Non linearity (on 253nm peak) seems to have come from Ca interference |
| Element | RMSE (ppm) | Wavelength (nm) | Calibration Method | Notes |
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