Abstract
Organic compounds are coated in thin layers (1–1000 molecules) on the surface of a ferromagnetic conductor. This conductor is warmed up to the Curie temperature of the ferromagnetic material in about 20–30 mseconds by high frequency induction heating. The fragments are continuously fed into a gas chromatograph and the effluent to a fast scanning mass spectrometer (Hitachi Perkin-Elmer RMU-6D) by means of an inert carrier gas (helium). Most of the helium is removed in a separator mounted between the gas chromatograph and mass spectrometer. A complete mass spectrum of each pyrolysis fragment is obtained in less than 3 seconds. The thermal fragmentation of the naturally occurring amino acids has been studied. The possibilities of the technique in the analysis of amino acids in amino acid mixtures (protein hydrolyzates) and peptides in the microgram range are discussed.
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