Journal
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
Volume 98, Issue -, Pages 201-206Publisher
ELSEVIER
DOI: 10.1016/j.jaap.2012.07.004
Keywords
MALDI-MS; Catalytic; Pyrolysis; Metal oxide; Lipids; Bacteria; Algae
Funding
- U.S. Department of Energy, Office of Vehicle Technologies, Fuels and Lubricants Technologies Program through the National Renewable Energy Laboratory [KXEA-3-33607-40]
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A procedure for lipid analysis using catalytic pyrolysis metal oxide laser ionization mass spectrometry (CP-MOLI MS) is described. When surface activated CaO is mixed with a lipid sample and analyzed using CP-MOLI MS, cleavage of lipids occurs by a reaction that resembles thermal hydrolysis methylation. CP-MOLI MS of monoacylglycerides (MAG), diacylglycerides (DAG), triacylglycerides (TAG), varied fatty acids on DAGs and TAGs, phospholipids, algae, and bacteria produced Ca adducts of fatty acid constituents from the respective molecular species without matrix background interference. CP-MOLI MS offers increased speed and a streamlined analysis in which intact lipids as well as their representative fatty acid constituents can be profiled on the same instrument. (c) 2012 Elsevier B.V. All rights reserved.
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