LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Quantitative determination of wear metals in engine oils using laser-induced breakdown spectroscopy: A comparison between liquid jets and static liquids B Pavel Yaroshchyk, Richard J.S. Morrison, Doug Body, Bruce L. Chadwick Oil (static liquid) Oriel InstaSpec V Oriel MS 257
Laser: Nd:YAG
1064.0000nm
NonemJ
0.500Hz
Gate Delay: Noneus
Gate Width: 1.000us
Comparison is made between detection limits in static liquids (this reference) and jets (http://www.libs-info.com/paper/47/). Paper includes formula/theory for the calculation of the optimal focussing conditions in liquids and jets. Calibrations are then applied to the analysis of wear metals in engine oil samples.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
Na 24.0000 (Stated) 588.9950 N/A Univariate Calibration 1.0000-100.0000 Analysed using 150mJ laser pulses
Mg 1.8000 (Stated) 279.5530 N/A Univariate Calibration 1.0000-100.0000 Analysed using 70mJ laser pulses
Al 35.0000 (Stated) 309.2700 N/A Univariate Calibration 1.0000-100.0000 Analysed using 70mJ laser pulses
Ca 6.2000 (Stated) 393.3670 N/A Univariate Calibration 1.0000-100.0000 Analysed using 70mJ laser pulses
Ti 18.8000 (Stated) 334.9040 N/A Univariate Calibration 1.0000-100.0000 Analysed using 150mJ laser pulses
V 43.0000 (Stated) 310.2300 N/A Univariate Calibration 1.0000-100.0000 Analysed using 150mJ laser pulses
Mn 20.0000 (Stated) 257.6100 N/A Univariate Calibration 1.0000-100.0000 Analysed using 150mJ laser pulses
Cu 6.1000 (Stated) 324.7540 N/A Univariate Calibration 1.0000-100.0000 Analysed using 150mJ laser pulses
Zn 11.4000 (Stated) 202.5510 N/A Univariate Calibration 1.0000-100.0000 Analysed using 150mJ laser pulses
Ag 12.0000 (Stated) 328.0680 N/A Univariate Calibration 1.0000-100.0000 Analysed using 70mJ laser pulses
Cd 22.0000 (Stated) 226.5020 N/A Univariate Calibration 1.0000-100.0000 Analysed using 150mJ laser pulses
Ba 6.5000 (Stated) 455.5440 N/A Univariate Calibration 1.0000-100.0000 Analysed using 70mJ laser pulses


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