| US 7,572,319 B2 | ||
| Analyte pre-concentrator for gas chromatography | ||
| Andrew Tipler, Trumbull, Conn. (US); Gary Campbell, New Milford, Conn. (US); and Mark Collins, Huntington, Conn. (US) | ||
| Assigned to PerkinElmer LAS, Inc., Boston, Mass. (US) | ||
| Filed on Dec. 24, 2007, as Appl. No. 11/963,938. | ||
| Application 11/963938 is a continuation of application No. 11/233162, filed on Sep. 22, 2005, granted, now 7,311,757. | ||
| Application 11/233162 is a continuation of application No. 10/954784, filed on Sep. 30, 2004, granted, now 6,974,495. | ||
| Application 10/954784 is a continuation of application No. 10/625259, filed on Jul. 22, 2003, granted, now 6,814,785. | ||
| Application 10/625259 is a continuation of application No. 10/202147, filed on Jul. 24, 2002, granted, now 6,652,625. | ||
| Prior Publication US 2008/0098887 A1, May 01, 2008 | ||
| Int. Cl. B01D 53/22 (2006.01) | ||
| U.S. Cl. 95—82 [95/87; 95/89; 96/104; 96/105; 96/132; 96/133; 96/143; 96/146; 96/153; 73/23.35; 73/23.41] | 20 Claims |
| 1. A system for pre-concentrating analytes for use with a chromatographic column coupled thereto, comprising:
a headspace sampler for obtaining headspace vapor containing analytes;
a transfer line connected to said headspace sampler for transfering the headspace vapor;
a chromatographic injector connected to said transfer line to receive the headspace vapor obtained by said headspace sampler,
said injector having a vent through which moisture is vented from said injector;
a tube disposed in said injector;
an adsorbent disposed in said tube for adsorbing the analytes when the headspace vapor passes through said tube; and
a column isolating accessory coupled to said injector, with which accessory a chromatographic column coupled to said accessory
is isolated from substances flowing through said injector.
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