公开(公告)号：US3859209A

公开(公告)日：1975-01-07

申请号：US34123573

申请日：1973-08-14

Applicant: CALIFORNIA INST OF TECHN

Inventor： JAHNSEN VILHELM J ,  BLOOM WILLIAM G ,  CAMPEN JR CHARLES F

IPC: G01N30/12 ,  G01N30/40 ,  B01D15/06

CPC classification number: G01N30/40 ,  G01N30/12

Abstract: A system for separating organic chemical compounds in an extract consisting of a relatively large volume of solvent in which the compounds are dissolved, comprises a heatable column, packed with an appropriate packing material. The extract is injected into the column after the latter''s temperature is above the vaporization temperature of the solvent. The solvent coming in contact with the heated packing material vaporizes, and the solvent vapors are flushed out of the column, while the compounds are deposited on the packing material and thereby prevented from exiting the column together with the solvent vapors. After complete removal of all solvent vapors, the temperature of the column is raised to above the vaporization temperature of all of the compounds to vaporize the compounds and thereby separate them from the packing material. An appropriate flushing gas transfers the vaporized compounds from the column for direct injection into an analytical instrument, such as a gas chromatograph.