发明名称 |
GAS CHROMATOGRAPHIC METHOD |
摘要 |
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.
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申请公布号 |
CA2110343(C) |
申请公布日期 |
1999.08.24 |
申请号 |
CA19932110343 |
申请日期 |
1993.11.30 |
申请人 |
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发明人 |
CHEH, CHRISTOPHER HUK-SHI;CHANG, SHINN-DER;WENG, CHENGWEN;TANG, YUANMING;HOLZHUETER, INGO BERND;HAWTHORNE, SAMUEL HUGH |
分类号 |
B01D59/26;G01N30/02;G01N30/12;G01N30/16;G01N30/30;G01N30/46;G01N30/54;G01N30/80;(IPC1-7):B01D15/08 |
主分类号 |
B01D59/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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