Title:
化合物の回収率が向上し、マトリックス管理が強化されたガスクロマトグラフィのサンプル導入のための加熱脱離装置
Document Type and Number:
Japanese Patent JP6924275
Kind Code:
B2
Abstract:
A system to thermally desorb a sample into a multi-column GC or GCMS system that can use both the desorption system and GC system for optimizing injection rates, matrix management (e.g., water elimination), optimizing recovery of a specific range of chemicals, and system cleanup is described. Reversing the flow through a first column inside the GC can facilitate the elimination of excess, condensed water as well as heavy chemicals that could otherwise affect the operation and background of the GC. The elimination of flow through both the thermal desorber and a first column in the GC during sample preheat can accommodate the pre-expansion of the sample that could otherwise result in pre-release to the active carrier gas flow in other systems. Transfer lines and rotary valves can be avoided, improving system performance and longevity, with simple maintenance achieved by replacing a desorption liner and the first GC column.
Inventors:
Cardan, Daniel Bee.
Application Number:
JP2019555679A
Publication Date:
August 25, 2021
Filing Date:
April 16, 2018
Export Citation:
Assignee:
Entec Instruments, Inc.
International Classes:
G01N30/06; G01N30/26; G01N30/46; G01N30/54
Domestic Patent References:
| JP2001194354A | ||||
| JP2009864U | ||||
| JP4254756A |
Foreign References:
| US20010027722 | ||||
| US3807217 |
Attorney, Agent or Firm:
Yasunori Otsuka
Yasuhiro Otsuka
Shiro Takayanagi
Shuji Kimura
Osamu Shimoyama
Yasuhiro Otsuka
Shiro Takayanagi
Shuji Kimura
Osamu Shimoyama