Abstract
Trace levels of impurities in styrene monomer are collected at the exit end of a semi-preparative gas chromatographic column by passing the effluent gas into a tube containing the porous polymer Tenax. The major component, styrene, is not permitted to enter the adsorbent. The concentrated impurities are then thermally desorbed and analyzed by capillary gas chromatography and mass spectrometry. Of the more than 100 peaks present, 60 have been identified.
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