IMPROVED GAS CHROMATOGRAPHY SAMPLE INJECTOR AND APPARATUS USING SAME

摘要

The present invention relates to an improved sample injector (4) for use in gas chromatography. The invention also includes a method of injecting a sample onto a chromatographic column (2), and a method of analyzing a sample using column chromatography and/or mass spectrometry. The improved sample injector (4) features an arrangement to allow a pyrolytic probe (26) to be more easily inserted into the vaporization cavity (6) while permitting the sample to be volatilized in such a way that the sample is more efficiently introduced onto the column. Another feature of the invention is the use of means (28) to reduce the volume of the pyrolysis/vaporization cavity (6) so as to provide efficient throughput of pure sample. Also part of the present invention is a gas chromatograph and gas chromatograph-mass spectrometer which uses the sample injector of the present invention.