LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
On-line monitoring of remediation process of chromium polluted soil using LIBS M.A. Gondal, T. Hussain, Z.H. Yamani, M.A. Baig Soil LIBS2000+ LIBS2000+
Laser: Nd:YAG
Gate Delay: 4.000us
Gate Width: Noneus
Despite title, analysis was made of dried pellets (20mm diameter, 0.5mm thickness), pressed in 20tons for 30 mins. Initial samples (at 2.68%) were produced by adding K2CrO4 solution to soil. This was then treated and the Cr concentration measured to detect the reduction in Cr concentration. Useful information on LOD and RMSE provided
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
Cr 3.0000 (Calibration Curve Slope) 425.4000 N/A Univariate 100.0000-100000.0000 The paper LOD used 2 sigma/slope. This value has been converted to the more usual, 3 sigma/slope

Element RMSE (ppm) Wavelength (nm) Calibration Method Notes
Cr 165.4554 ppm 425.4000 Univariate Calibration