LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Evaluation of laser induced breakdown spectroscopy for cadmium determination in soils Dário Santos Júnior, Lidiane Cristina Nunes, Lilian Cristina Trevizan, Quienly Godoi, Flavio O. Leme, Jez William B. Braga, Francisco José Krug Soil Kodak KAF 1001 ESA 3000
Laser: Nd:YAG
Gate Delay: 2.000us
Gate Width: 5.000us
Samples were cryogenically milled (liquid Nitrogen) and then pressed into 15mm diameter pellets using 2-8.5ton/cm^2. Boric Acid or Ultrabinder were used to increase pellet stability. The authors discuss the improvement (in both signal strength and %RSD) by the use of pellets and binder.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
Cd 1.3000 (Calibration Curve Slope) 214.4410 226.502nm, 224.802nm Univariate 4.0000-70.0000 LOD: 3.6ppm with 226.502nm, 4.0ppm with 228.802nm Possible interferences from Fe I (214.519nm), Ni II (226.446nm) and As I (228.802nm) were explored but found to be negligible in the test samples.

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