Exchange interference for a range of partially deuterated hydrocarbons using a GC-EI-MSD.

Industrial catalyst processes, such as the Fischer-Tropsch (FT) process, produce a vast array of products from syngas (H /CO), such as jet fuel, gasoline, diesel, synthetic rubbers, monomers for plastics industries, and other oil/wax materials for specific purposes such as cosmetics. Multitudes of publications since the discovery of the FT process in 1925 have been composed, attempting to elucidate the mechanism. Many of these publications attempt to investigate the mechanism of FT by the utilization of specific deuterium experimentation through the switching of the syngas from H /CO to D /CO.

Development and validation of an LC-MS method for quantitation of ergot alkaloids in lateral saphenous vein tissue.

A liquid chromatography-mass spectrometry (LC-MS) method for simultaneous quantitation of seven ergot alkaloids (lysergic acid, ergonovine, ergovaline, ergocornine, ergotamine, ergocryptine, and ergocristine) in vascular tissue was developed and validated. Reverse-phase chromatography, coupled to an electrospray ionization source, was used to separate and ionize alkaloids. Singly protonated molecular ions for each alkaloid and methysergide (internal standard), were detected by single-ion monitoring (SIM).