LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Determination of trace constituents in thoria by laser induced breakdown spectrometry Suresh K. Aggarwal, Arnab Sarkar, D. Alamelu Nuclear Spectrolaser 1000 Spectrolaser 1000 Spectrolaser
Laser: Nd:YAG
1064.0000nm
50.0000mJ
10.000Hz
Gate Delay: 6.000us
Gate Width: 1000.000us
Samples of Thoria (ThO2) were prepared using 3cm wide Al sample cups and a pressure of 2 10^9 Pa to form a pellet. In addition to the elements with LODs, Mn, Nz, V, Be, Ce, B and Cr were also detected, but could not be quantified due to the complex spectra (from the high Th concentration)
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
Al 18.0000 (Calibration Curve Slope) 256.7980 N/A Univariate 6.9000-65.0000 Intensity ratioed to Th (II) at 318.019nm.
Ca 26.0000 (Calibration Curve Slope) 422.6720 N/A Univariate 73.0000-586.0000 Intensity ratioed to Th (II) at 318.019nm.
Cu 46.0000 (Calibration Curve Slope) 327.3950 N/A Univariate 3.1000-110.0000 Intensity ratioed to Th (II) at 318.019nm.
Fe 32.0000 (Calibration Curve Slope) 277.2100 N/A Univariate 56.0000-137.0000 Intensity ratioed to Th (II) at 318.019nm.
Mg 38.0000 (Calibration Curve Slope) 279.5520 N/A Univariate 4.8000-168.0000 Intensity ratioed to Th (II) at 318.019nm.
Mo 19.0000 (Calibration Curve Slope) 386.4100 N/A Univariate 1.2000-45.0000 Intensity ratioed to Th (II) at 318.019nm.
Ni 24.0000 (Calibration Curve Slope) 301.9140 N/A Univariate 11.0000-57.0000 Intensity ratioed to Th (II) at 318.019nm.


Element RMSE (ppm) Wavelength (nm) Calibration Method Notes
Al 3.7000 ppm 256.7980 Univariate Calibration Peak ratioed to Th (main matrix element) at 318.019nm
Ca 76.0000 ppm 422.6720 Univariate Calibration Peak ratioed to Th (main matrix element) at 318.019nm
Cu 8.0000 ppm 327.3950 Univariate Calibration Peak ratioed to Th (main matrix element) at 318.019nm
Fe 23.0000 ppm 277.2100 Univariate Calibration Peak ratioed to Th (main matrix element) at 318.019nm
Mg 12.0000 ppm 279.5520 Univariate Calibration Peak ratioed to Th (main matrix element) at 318.019nm
Mo 22.0000 ppm 386.4100 Univariate Calibration Peak ratioed to Th (main matrix element) at 318.019nm
Ni 10.0000 ppm 301.9140 Univariate Calibration Peak ratioed to Th (main matrix element) at 318.019nm