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 (jet)	Oriel InstaSpec V	Oriel MS 257
Laser:	Nd:YAG 1064.0000nm NonemJ 2.000Hz
Gate Delay:	Noneus
Gate Width:	1.000us
Comparison is made between detection limits in static liquids (http://www.libs-info.com/paper/46/) and jets (this reference). 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.

LOD
RMSEP

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Element	Detection Limit (ppm)	Wavelength (nm)	Other Wavelengths (nm)	Calibration Method	Calibration Range (ppm)	Notes
Ag	3.1000 (Stated)	328.0680	N/A	Univariate Calibration	1.0000-100.0000	Liquid jets LOD is lower than for static surface by factor ~4.
Al	15.0000 (Stated)	309.2700	N/A	Univariate Calibration	1.0000-100.0000	Detection limit is lower than in static liquid by factor of ~2.
Ba	1.4000 (Stated)	455.5440	N/A	Univariate Calibration	1.0000-100.0000	Liquid jets LOD is lower than for static surface by factor ~4.
Ca	0.4000 (Stated)	393.3670	N/A	Univariate Calibration	1.0000-100.0000	Detection limit is lower than in static liquid by factor of 15.
Cd	10.0000 (Stated)	226.5020	N/A	Univariate Calibration	1.0000-100.0000	Liquid jets LOD is lower than for static surface by factor ~2.
Cr	43.0000 (Stated)	425.4340	N/A	Univariate Calibration	1.0000-100.0000	Only detected in liquid jet, not in static surface
Cu	2.4000 (Stated)	324.7540	N/A	Univariate Calibration	1.0000-100.0000	Liquid jets LOD is lower than for static surface by factor ~2.
Fe	20.0000 (Stated)	259.9360	N/A	Univariate Calibration	1.0000-100.0000	Only detected in jet, not in static surface
Mg	0.4000 (Stated)	279.5530	N/A	Univariate Calibration	1.0000-100.0000	Detection limit is lower than in static liquid by factor of ~4.
Mn	6.0000 (Stated)	257.6100	N/A	Univariate Calibration	1.0000-100.0000	Liquid jets LOD is lower than for static surface by factor ~3.

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