Method and apparatus for the introduction of a vaporizable sample into an analytical test apparatus
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United States of America Patent
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Mar 22, 1988
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N/A
app pub date -
Mar 12, 1987
filing date -
Feb 8, 1985
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Expired
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Abstract
This invention is concerned with an apparatus and a method for the introduction of vaporizable samples into an apparatus for the analysis of such samples, such as a gas chromatograph, and especially a capillary gas chromatograph and ion mobility spectrometer. A sample is vaporized or desorbed from a sample tube by heating the sample tube and then transferred by a carrier gas to the analytical apparatus by being withdrawn from the sample tube along and condensed on the inner surface of a heat conductive metal walled needle of a hypodermic syringe from which it is then vaporized and introduced into the analytical apparatus. Suitable samples may also be introduced into an ion mobility spectrometer directly by placing a sample-charged sample tube into a sample-introduction port thereto.
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