Journal
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
Volume 60, Issue 11, Pages 1482-1485Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.sab.2005.09.002
Keywords
Laser Induced Breakdown Spectroscopy (LIBS); LIBS in liquids; wear metals in engine oils
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A comparison between single- and double-pulse LIBS for the quantitative elemental analysis of used engine oils has been performed. Paper substrates have been Utilised for the analysis and are shown to provide better limits of detection (LODs), no splashing and easier sample handling compared to the previously reported experiments using laminar liquid jets and static liquid surfaces. Single-pulse LIBS analysis of oil on paper substrates has had on average 2x better LODs than was obtained using flowing liquid jets, while double-pulse LIBS showed 4x improvement. Single-pulse LIBS has been found preferable for the analysis, as the use of an additional laser in double-pulse LIBS yielded only a minor improvement while adding substantially to the complexity and cost of the system. (c) 2005 Elsevier B.V. All rights reserved.
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