Method of and apparatus for searching for unknown specimen, and recording medium with recorded program for searching for unknown specimen
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United States of America Patent
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Sep 3, 2002
Grant Date -
N/A
app pub date -
Jul 16, 1999
filing date -
Jul 16, 1998
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Abstract
An unknown polymer is pyrolyzed by a pyrolizer and a produced mixture of pyrolytic products is separated into the pyrolytic products by a separating column. The separated pyrolytic products are detected by a mass spectrometer to generate a chromatogram. Ion intensities contained in all total ion intensities making up peaks in the chromatogram are added, for each ion of the same mass, to plot a combined mass spectrum of the unknown polymer. Combined mass spectra of a plurality of known polymers are generated in the same manner as with the combined mass spectrum of the unknown polymer, and stored as a library. The library is searched for the combined mass spectrum of one of the known polymers which agrees with a high probability percentage with the combined mass spectrum of the unknown polymer.
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