G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 35/10 (2006.01) G01N 1/22 (2006.01) G01N 1/28 (2006.01) G01N 33/00 (2006.01) G01N 33/36 (2006.01)
Patent
CA 2311692
Described is apparatus and a process for analyzing a volatile composition such as a perfume composition located on the surface and/or in the interstices of a planar pliable porous substrate such as a towel section. A planar surface of the substrate which contains the volatile composition is initially juxtaposed adjacent a solid wall (e.g., glass frit) porous to a nonreactive carrier gas such as air, nitrogen or carbon dioxide, and fully and tightly covers the porous section of the wall. The carrier gas is passed through the porous section of the wall and then through the pliable porous substrate section which is adjacent to the wall; after which the carrier gas contains molecules of each component of the volatile composition. The composition-carrier gas mixture is then passed through a trapping substance (e. g., TENAX R) which entraps the molecules of each component of the volatile composition. The volatile composition is then analyzed (e. g., using GLC and NMR techniques) after removing the trapping substance containing the entrapped molecules from the apparatus.
Gowling Lafleur Henderson Llp
International Flavors & Fragrances Inc.
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