| 摘要 |
PROBLEM TO BE SOLVED: To enable two-dimensional GC-MS/smelling analysis, two-dimensional GC-fractionating and the like only by performing a switching operation without changing a device configuration.SOLUTION: A sample gas flow dividing device comprises: GC columns 56 and 56' respectively connected to sample inlets 51 and 51'; a three-way connector Tconnected to the GC columns 56 and 56'; a three-way connector Tconnected to the three-way connector T; three-way connectors T, Tconnected to the three-way connector T; a three-way connector Tconnected to the three-way connector T; a passage switching valve Vwhich is connected to the three-way connectors T, T, and switches between passages to the three-way connector Tand to the three-way connector T; a three-way connector Tconnected to the passage switching valve V; a first pressure control device 52 connected to the three-way connector T; a passage open/close valve Vconnected between the three-way connectors Tand Tnot via the passage switching valve V; a first sample gas discharge port connected to the three-way connector T; and a second sample gas discharge port connected to the three-way connector T.SELECTED DRAWING: Figure 11 |
