LIBS Info: Element Analysis
| Title | Authors | Material | Detector | Spectrometer | Software |
|---|---|---|---|---|---|
| Heavy metal concentrations in soils as determined by laser-induced breakdown spectroscopy (LIBS), with special emphasis on chromium | G.S. Senesi, M. Dell'Aglio, R. Gaudiuso, A. De Giacomo, C. Zaccone, O. De Pascale, T.M. Miano, M. Capitelli | Soil | i3000 Jobin Yvon | Jobin Yvon Triax 55 | |
| Laser: | Nd:YAG 532.0000nm 15.0000mJ 10.000Hz |
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| Gate Delay: | 0.750us | ||||
| Gate Width: | 9.000us | ||||
| Soil samples for analysis were finely ground, then pressed to obtain pellets for analysis. Fe I lines were used to confirm plasma temperature was reasonably constant across the samples and the Stark Broadening of the Al I 396.85nm line confirmed the electron number density. Calibration curves for Cr [both LOD and RMSE demonstrated], Pb, Zn, Cu and V shown. Concentrations for Fe and Ti also calculated. | |||||
| Element | Detection Limit (ppm) | Wavelength (nm) | Other Wavelengths (nm) | Calibration Method | Calibration Range (ppm) | Notes |
|---|---|---|---|---|---|---|
| Cr | 111.0000 (Minimum Concentration Detected) | 520.4500 | N/A | Univariate | -10.0000--10.0000 | Ratio to background to improve signal stability |
| Element | RMSE (ppm) | Wavelength (nm) | Calibration Method | Notes |
|---|---|---|---|---|
| Cr | 16.4000 ppm | 520.4500 | Univariate Calibration | Ratio to signal background for better stability |