LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Total carbon measurement in whole tropical soil sample Robson M. da Silva, Debora M.B.P. Milori, Edilene C. Ferreira, Ednaldo J. Ferreira, Francisco José Krug, Ladislau Martin-Neto Soil StellarNet PORTA-LIBS-2000 StellarNet PORTA-LIBS-2000
Laser: Nd:YAG
Gate Delay: 2.000us
Gate Width: Noneus
Prior to analysis, the soil samples were cryogenic ground, then pressed into pellets.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
C 3000.0000 (Minimum concentration detected) 193.0900 N/A Univariate Calibration 3000.0000-7100.0000 The authors tried calibrations using the intensity in a single pixel of the C peak at 193nm [the 247.86nm peak had strong Fe interferences]. The pixel wavelengths were 192.78nm, 192.87nm, 192.96nm, 193.04nm and 193.15nm. Best results were obtained using a multivariate calibration against all 5 pixels.

Element RMSE (ppm) Wavelength (nm) Calibration Method Notes