公开(公告)号：CA2824525A1

公开(公告)日：2012-07-19

申请号：CA2824525

申请日：2012-01-11

Applicant: 1ST DETECT CORP

Inventor： RAFFERTY DAVID ,  WYLDE JAMES ,  SPENCER MICHAEL ,  OJEDA PEDRO ,  BOWDEN THOMAS

IPC: H01J49/04 ,  G01N1/40

Abstract: In one general aspect, a sample is transferred into a mass spectrometer (150) by capturing a sample on a collector (125), inserting the collector (125) into a sample chamber (110) coupled to the mass spectrometer (150) and a vacuum pump (342, 344), evacuating the sample chamber (110) using the vacuum pump (342, 344) to reduce an internal pressure of the sample chamber (110) to a level less than atmospheric pressure, heating the collector (125) to release the sample from the collector, and introducing the sample into the mass spectrometer (150) from the evacuated sample chamber (110).

公开(公告)号：CA2826873C

公开(公告)日：2019-04-02

申请号：CA2826873

申请日：2012-02-07

Applicant: 1ST DETECT CORP

Inventor： RAFFERTY DAVID ,  SPENCER MICHAEL ,  WYLDE JAMES ,  OJEDA PEDRO ,  BOWDEN THOMAS

IPC: G01N1/40

Abstract: A chemical preconcentrator (100) includes a conduit (200) defining a flow path (106) between two ends (108A, 108B) and having a heating element (102) disposed within the conduit, such that the heating element has at least one sorbent material (115) deposited directly on at least a portion of a conductive surface of the heating element. Some such heating elements (102) are in the form of electrically conductive strips defining both a plurality of apertures (112, 710) through the strip and a series of undulations (114) spaced along the flow path (106).

公开(公告)号：CA2826873A1

公开(公告)日：2012-08-16

申请号：CA2826873

申请日：2012-02-07

Applicant: 1ST DETECT CORP

Inventor： RAFFERTY DAVID ,  SPENCER MICHAEL ,  WYLDE JAMES ,  OJEDA PEDRO ,  BOWDEN THOMAS

IPC: G01N1/40

Abstract: A chemical preconcentrator (100) includes a conduit (200) defining a flow path (106) between two ends (108A, 108B) and having a heating element (102) disposed within the conduit, such that the heating element has at least one sorbent material (115) deposited directly on at least a portion of a conductive surface of the heating element. Some such heating elements (102) are in the form of electrically conductive strips defining both a plurality of apertures (112, 710) through the strip and a series of undulations (114) spaced along the flow path (106).