LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Use of the vacuum ultraviolet spectral region for laser-induced breakdown spectroscopy-based Martian geology and exploration Leon Radziemski, David A. Cremers, Katherine Benelli, Cynthia Khoo, Ronny D. Harris Soil Andor ICCD McPherson 218
Laser: Nd:YAG
Gate Delay: Noneus
Gate Width: 20.000us
Experiments to determine detection limits under Martian conditions. To simulate this, measurements were made in a chamber containing 7 torr (930 Pa) CO2. A range of materials were used for analysis, although Los Alamos soil featured prominently. The paper has VUV spectra for As, Br, Cl, P ans S.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
As 440.0000 (Stated) 189.0000 N/A Univariate Calibration -10.0000--10.0000 Delay: 200ns % RSD: 26
Br 56000.0000 (Stated) 163.3000 154.1 Univariate Calibration -10.0000--10.0000 Delay: 100ns % RSD: 53% LOD @ 154.1nm: 5.6% % RSD: 43
C 2400.0000 (Stated) 247.8000 165.7nm, 193.1nm Univariate Calibration -10.0000--10.0000 Delay: 500ns RSD:7.6% 193.1nm LOD: 0.32% 165.7nm LOD: 0.51%
Cl 75000.0000 (Stated) 133.6000 N/A Univariate Calibration -10.0000--10.0000 Delay: 500ns LOD: 27%
P 280.0000 (Stated) 178.3000 N/A Univariate Calibration -10.0000--10.0000 Delay: 1500ns RSD: 16%
S 1100.0000 (Stated) 545.4000 180.7nm, 182.6nm Univariate Calibration -10.0000--10.0000 Delay: 500ns RSD: 10% 180.7nm LOD: 1.03% 182.6nm LOD: 1.77%

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