LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Laser induced breakdown spectroscopy for bulk minerals online analyses M. Gaft, I. Sapir-Sofer, H. Modiano, R. Stana Fertilizer AvaSpec-2048-SPU AvaSpec-2048-SPU
Laser: Nd:YAG
1064.0000nm
45.0000mJ
20.000Hz
Gate Delay: 1.000us
Gate Width: 9000.000us
Rare example of use of LIBS for online analysis in an industrial setting. The authors use their ruggedised LIBS rig to analyse source rocks for a phosphate plant. Rig has auto focus and air conditioning, and the paper contains data from 9 months of operation in the field. Calibration is via determining empirical relationship between spectra and source material concentrations. Results are less accurate than lab determination, but may be more representative due to continuous sampling. Results also presented for coal ash analysis
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes


Element RMSE (ppm) Wavelength (nm) Calibration Method Notes
Mg 0.0900 % -10.0000 Univariate Calibration One point comparison to lab data (rather than necessarily indicative of full performance).
Fe 0.0600 % -10.0000 Univariate Calibration One point comparison to lab data (rather than necessarily indicative of full performance).
Al 0.1100 % -10.0000 Univariate Calibration One point comparison to lab data (rather than necessarily indicative of full performance).