LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Quantitative Analysis of Additives in Solid Zinc Alloys by Laser-induced Plasma Spectrometry L. St-Onge , M. Sabsabi, Paulo Cielo Zinc Alloys IRY 700 McPherson 207
Laser: Nd:YAG
Gate Delay: 10.000us
Gate Width: 10.000us
As the title suggests, impurities in solid Zinc alloys are analysed. As with many papers of this period, work is done to measure the plasma temperature and electron density, and firmly establish the best conditions for analysis. Studies were also made of the optimal focusing distance, with a focus point behind the sample surface providing the best results. 9 laser pulses were used to prepare the analysis surface, followed by 16 analysis shots.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
Al 9.0000 (Stated) 309.2700 308.22 Univariate Calibration -10.0000--10.0000 Intensity normalised Zn at 307.59nm. LOD of 16ppm also obtained for 308.22nm peak.
Cu 544.0000 (Stated) 282.4400 N/A Univariate Calibration -10.0000--10.0000 Authors noted that Cu peaks at 324.7nm and 327.4nm would have given better detection limits, but these were not available with their equipment. Peak ratioed to Zn @ 280.09nm
Fe 22.0000 (Stated) 302.0600 N/A Univariate Calibration -10.0000--10.0000 Peak ratioed to Zn at 307.59nm
Pb 54.0000 (Stated) 283.3100 287.33 Univariate Calibration -10.0000--10.0000 Peak ratioed to Zn @ 280.09nm. LOD of 405ppm also obtained at 287.33nm
Sn 33.0000 (Stated) 284.0000 286.33nm, 303.41nm Univariate Calibration -10.0000--10.0000 Ratioed to Zn @ 280.09nm. LODs of 54ppm and 34ppm obtained at 286.33nm and 303.41nm respectively

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