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
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