LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Potential use of surface-assisted LIBS for determination of strontium in wines P. Veis, J. Yu, A. Marin Roldan, J. Bockova Liquids Andor ICCD Mechelle 5000
Laser: Nd:YAG
Gate Delay: 0.400us
Gate Width: 3.000us
The authors dry the wine sample on both Silicon and Aluminium Wafers [30mins] before analysis. They argue this leads to a significant improvement in LOD without unreasonably complicating the analysis time.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
Sr 0.2070 (Calibration Curve Slope) 460.7330 N/A Univariate 0.0000-30.0000 Normalised to Ca I (646.257nm). Sample dried on an Aluminium Wafer
Sr 0.0530 (Calibration Curve Slope) 460.7330 481.188nm, 407.771nm Univariate 0.0000-30.0000 Best result utilised 460.733nm line normalised to the Ca I peak at 646.257nm on a Silicon Wafer. A range of other combinations tested, many with sub-ppm performance

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