B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 15/08 (2006.01) B01D 59/26 (2006.01) G01N 30/16 (2006.01) G01N 30/30 (2006.01) G01N 30/46 (2006.01) G01N 30/02 (2006.01) G01N 30/12 (2006.01)
Patent
CA 2110343
A gas chromatographic method utilizes columns having either ascending or descending temperature profiles to effect separation even under column overloading conditions. A fixed ascending temperature profile column allows for good separation of components of a mixture under conditions of column overloading. A mixture to be separated is chromatographed on at least one such column prior to chromatography on a column maintained with a descending temperature profile. This latter column has surprisingly been found to greatly reduce tailing of less volatile species. The invention also includes a variable temperature descending column chromatography to provide an initial ordering of a large quantity of components prior to chomatography on the fixed ascending temperature profile column, or on the serial fixed ascending and descending temperature profile pair of columns.
Chang Shinn-Der
Cheh Christopher Huk-Shi
Hawthorne Samuel Hugh
Holzhueter Ingo Bernd
Tang Yuanming
Chang Shinn-Der
Cheh Christopher Huk-Shi
Hawthorne Samuel Hugh
Holzhueter Ingo Bernd
Ridout & Maybee Llp
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