JP5522219B2 - Gas chromatograph - Google Patents

Description

  The present invention relates to a gas chromatograph apparatus, and more particularly to a gas chromatograph apparatus using a plurality of transfers.

  Environmental pollutants in the air, for example, various volatile organic compounds (VOC) are urgently required to establish a measurement technique as a causative substance of the sick house problem. In recent years, it is said that there are more than 100 kinds of organic compounds that can be a source of environmental pollution, including SVOC (Semi-volatile organic compounds), which is a group of organic compounds having a higher boiling point than VOC. A gas chromatograph apparatus is frequently used as an analysis apparatus for separating and qualitatively quantifying these various substances. For example, a gas chromatograph apparatus including a plurality of column modules such as a first column module and a second column module is known (see, for example, Patent Document 1).

  Fig.7 (a) is a schematic block diagram of an example of the conventional gas chromatograph apparatus. Moreover, FIG.7 (b) and FIG.7 (c) are schematic block diagrams of an example of a column module. The gas chromatograph apparatus 301 includes an oven main body, a sample introduction unit 10 into which a sample is introduced and vaporized, a flame ionization detector (FID) 21, a first column module 31, a second column module 32, and a transfer 70. With.

The oven body is a cube surrounded by an upper wall 380a, a lower wall 380b, a rear wall 380c, a front door 380d as a front wall, a left side wall (not shown), and a right side wall (not shown). A housing 380 having a shape is provided, and an oven heater 380e for controlling the temperature of the internal space (for example, a heat convection method in which heat generated by resistance heating is sent by a fan) is disposed inside the housing 380. Has been.
The front door is formed to be openable and closable with the left end as an axis, and the interior space of the housing 380 is opened by an analyzer or manufacturer (designer) opening the front door.
Two openings to which the sample introduction part 10 and the FID 21 are respectively attached are formed in the upper surface wall.

  In the first column module 31, a temperature sensor 31b, a column 31c, and a column heater 31d are combined and wound in a coil shape, and the periphery is covered with a conductive foil 31a.

  A liquid phase is applied to the inside of the column 31c, and when the sample gas passes through the inside of the column 31c, each compound moves at a speed corresponding to the distribution coefficient or solubility of each compound. Are sequentially discharged from the outlet end.

  The transfer 70 is, for example, a fused silica capillary tube having an outer diameter of 0.35 mm and an inner diameter of 0.25 mm. The liquid phase or the like is not applied to the inside of the transfer 70. For example, the inlet end of the transfer 70 is connected to the sample introduction unit 10 by a nut, a ferrule or the like, and the outlet end of the transfer 70 is connected to the inlet end of the column 31c of the first column module 31 using the union 71 or the like. As a result, the sample gas can flow from the sample introduction unit 10 to the inlet end of the column 31 c of the first column module 31 through the transfer 70.

Here, an assembly process for assembling the gas chromatograph apparatus 301 including the first column module 31 and the second column module 32 will be described.
First, the manufacturer (designer) attaches the sample introduction unit 10 and the FID 21 to the opening of the upper surface wall 380a. Next, the manufacturer (designer) arranges the first column module 31 and the second column module 32 on the front door 380 d of the housing 380.

Next, when the manufacturer (designer) connects the transfer 70 between the sample introduction unit 10 and the first column module 31, the inlet end of the transfer 70 and the sample introduction unit 10 are connected with a nut, a ferrule, or the like. Connect with. Thereafter, the outlet end of the transfer 70 and the inlet end of the column 31c of the first column module 31 are connected using a union 71 or the like.
Next, when the manufacturer (designer) connects the transfer 70 between the FID 21 and the second column module 32, the outlet end of the transfer 70 and the FID 21 are connected by a nut, a ferrule, or the like. Thereafter, the inlet end of the transfer 70 and the outlet end of the column of the second column module 32 are connected using a union 71 or the like.
Next, when the manufacturer (designer) connects the transfer 70 between the first column module 31 and the second column module 32, the inlet end of the transfer 70 and the first column module 31 are connected to the union 71. Connect using etc. Thereafter, the outlet end of the transfer 70 and the column inlet end of the second column module 32 are connected using a union 71 or the like.

US Pat. No. 6,530,260

  However, in the gas chromatograph apparatus 301 as described above, the oven heater 380e disposed inside the housing 380 is used to adjust the temperature of the transfer 70 during analysis. The entire space is heated, and as a result, there is a problem that power consumption becomes very large.

  Further, in the gas chromatograph apparatus 301 as described above, in the assembly process, between the sample introduction unit 10 and the first column module 31, between the first column module 31 and the second column module 32, or the second column module. 32 and FID 21 are connected by transfer 70, but because there are many connection points, the manufacturer (designer) makes a mistake in connection points, or transfer 70 interferes with each other during connection work and breaks. Sometimes happened.

  In order to solve the above-mentioned problems, the present inventors have examined a connection method between the sample introduction unit and the column module (column unit). Therefore, it has been found that a guide having a function of guiding a transfer connection point or protecting the transfer is used. Further, it has been found that by using such a guide, a heater for heating the guide without using an oven is used.

That is, the gas chromatograph apparatus of the present invention includes at least one sample introduction unit, at least one detector, and at least one column unit, between the sample introduction unit and the column unit, and A gas chromatograph apparatus comprising a transfer unit for connecting between a column unit and the detector, each of which is attached between the sample introduction unit and the column unit, and has a tubular shape through which the transfer is passed . A guide, a tubular second guide attached between the column unit and the detector and through which the transfer is passed, and at least one attached around the first guide and the second guide The heater is provided.

  As described above, according to the gas chromatograph apparatus of the present invention, since the heater is compactly arranged around the first guide and the second guide, power consumption is reduced when adjusting the temperature of the transfer during analysis. be able to. In addition, since the guide for guiding and protecting the transfer connection part is used, the connection part is not mistaken during the assembly process, and the transfer parts are not damaged by interference during the connection work. .

(Means and effects for solving other problems)
Further, in a gas chromatograph of the present invention, at least two or more of the column unit, a gas chromatograph and a transfer connecting between the column unit and the column unit, wherein said column unit column At least one heater attached to the periphery of the first guide, the second guide, and the third guide, and having a tubular third guide that is attached to the unit and through which the transfer is passed. May be provided.
Furthermore, in the gas chromatograph apparatus of the present invention , it is provided with a flow path changing connection mechanism that can be switched so as to either flow toward the column unit or flow toward the detector, A gas chromatograph apparatus comprising a transfer connected between the flow path changing connection mechanism and the column unit, and between the flow path changing connection mechanism and the detector, wherein the column unit and the column unit mounted between the flow diversion connection mechanism, and a fourth guide tube in which the transfer is passed through the inside, it mounted between the detector and the flow path changing connection mechanism, wherein the transfer internal and a fifth guide tube to be threaded through the first guide, the second guide, the third guide, said fourth guide, and the fifth guide It may be provided with at least one heater attached around.

The schematic block diagram of an example of the gas chromatograph apparatus which concerns on 1st embodiment. The schematic block diagram of an example of a column unit. The schematic block diagram of an example of the gas chromatograph apparatus which concerns on 2nd embodiment. The schematic block diagram of an example of the gas chromatograph apparatus which concerns on 3rd embodiment. The schematic block diagram of other examples of the gas chromatograph apparatus which concerns on 3rd embodiment. The schematic block diagram of other examples of the gas chromatograph apparatus which concerns on 3rd embodiment. The schematic block diagram of an example of the connection mechanism for flow-path change. The schematic block diagram of the gas chromatograph apparatus which concerns on a reference example. The schematic block diagram of an example of the conventional gas chromatograph apparatus. An example of a chromatogram.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments described below, and it is needless to say that various aspects are included without departing from the gist of the present invention.

<First embodiment>
FIG. 1 is a schematic configuration diagram of an example of a gas chromatograph apparatus according to the first embodiment. FIG. 2 is a schematic configuration diagram of an example of a column unit. In addition, the same code | symbol is attached | subjected about the thing similar to the gas chromatograph apparatus 301 mentioned above.
The gas chromatograph apparatus 1 includes a housing body, a sample introduction unit 10 where a sample is introduced and vaporized, a flame ionization detector (FID) 21, a first column unit 31, a transfer 70, and a first guide 61. And second guides 62-1 and 62-2, a third guide 63, and a transfer heater 50 that controls the temperature of the transfer 70.
The second guide 62-2 and the third guide 63 are used when the second column unit is connected. By incorporating the second guide 62-2 and the third guide 63 into the transfer heater 50 in advance, either the first column unit 31 is used alone, or both the first column unit 31 and the second column unit are used. Can be easily selected.

The housing body is surrounded by an upper wall 80a, a lower wall 80b, a left wall 80c, a right wall 80d, a rear wall (not shown), and a front door (not shown) serving as a front wall. A cubic housing 80 is provided.
The front door is formed to be openable and closable with the left end as an axis, and the interior space of the housing 80 is opened by the analyzer or manufacturer (designer) opening the front door.
Two openings for attaching the sample introduction part 10 and the FID 21 are formed in the upper surface wall.
The first column unit 31 includes a housing 31a having a rectangular parallelepiped wall in which an internal space is formed, and two inactivated capillary tubes 31e. 31c, a column heater 31d for controlling the temperature of the column 31c, and a heat insulating material 31b formed around the column 31c and the column heater 31d are arranged.
A liquid phase is applied to the inside of the column 31c, and when the sample gas passes through the inside of the column 31c, each compound moves at a speed corresponding to the distribution coefficient or solubility of each compound. Are sequentially discharged from the outlet end.
The casing 31a is formed with an opening through which the two inactivated capillary tubes 31e are passed. As a result, one inactivated capillary tube 31e is connected to the inlet end of the column 31c inside the housing 31a using a heat-resistant adhesive or the like, and another one inactivated The capillary tube 31e is connected to the outlet end of the column 31c inside the housing 31a using a heat resistant adhesive or the like. Such a first column unit 31 is manufactured by a MEMS technique. For example, a groove having a width of 200 μm and a depth of 100 μm is formed on a silicon substrate and is anodically bonded to Pyrex (registered trademark) glass.
The second column unit has the same structure as the first column unit 31, and the first column unit 31 is the type of liquid phase applied to the inside of the column 31c, the film thickness of the liquid phase, and The length is different.

  The first guide 61 is a stainless steel tube having an outer diameter of 1/16 inch and an inner diameter of 1 mm. The first guide 61 is linear so that the proximity portion of the sample introduction portion 10 and the proximity portion of the first column unit 31 can be connected to each other. The first column unit 31 is attached between the adjacent portions. When such a first guide 61 is produced, in the assembly process of the gas chromatograph apparatus 1, so as to be accurately attached between the proximity part of the sample introduction unit 10 and the proximity part of the first column unit 31. A mark indicating that the first guide 61 is attached to the sample introduction unit 10 side is formed by laser marking or the like, and the other end of the first guide 61 is provided on the first column unit 31 side. A mark indicating attachment is formed by laser marking or the like.

The second guide 62-1 is a stainless steel tube having an outer diameter of 1/16 inch and an inner diameter of 1 mm. The second guide 62-1 is bent so that the proximity portion of the FID 21 and the proximity portion of the first column unit 31 can be connected, and the proximity portion of the FID 21 and the proximity of the first column unit 31. It can be attached between the parts. When the second guide 62-1 is manufactured, the first step is performed so that the second guide 62-1 is accurately attached between the proximity portion of the FID 21 and the proximity portion of the first column unit 31 in the assembly process of the gas chromatograph apparatus 1. A mark indicating that the two guides 62-1 are attached to the FID 21 side is formed by laser marking or the like, and the other end of the second guide 62-1 is provided on the first column unit 31 side. A mark indicating attachment is formed by laser marking or the like.
The second guide 62-2 is a stainless steel tube having an outer diameter of 1/16 inch and an inner diameter of 1 mm. And the 2nd guide 62-2 is bent so that between the proximity part of the planned attachment position of the 2nd column unit and the proximity part of FID21 can be connected, and the installation position of the 2nd column unit is planned. It is attached between the proximity part and the proximity part of the FID 21. When such a second guide 62-2 is prepared, it is accurately attached between the proximity portion of the second column unit to be attached and the proximity portion of the FID 21 in the assembly process of the gas chromatograph apparatus 1. In addition, at one end of the second guide 62-2, a mark indicating that the second column unit is to be attached to the attachment position of the second column unit is formed by laser marking or the like, and the other end of the second guide 62-2 is provided. A mark indicating that it is attached to the FID 21 side is formed by laser marking or the like.

  The third guide 63 is a stainless steel tube having an outer diameter of 1/16 inch and an inner diameter of 1 mm. The third guide 63 is bent so as to be able to connect the proximity portion of the first column unit 31 and the proximity portion of the planned position of the second column unit. It attaches between a part and the proximity | contact part of the attachment scheduled position of a 2nd column unit. When such a third guide 63 is produced, it is accurately attached between the proximity part of the first column unit 31 and the proximity part of the planned installation position of the second column unit in the assembly process of the gas chromatograph apparatus 1. As shown, a mark indicating that the third guide 63 is attached to the first column unit 31 is formed by laser marking or the like, and the other end of the third guide 63 has a second mark. A mark indicating that the column unit is to be attached to the attachment position side is formed by laser marking or the like.

  The transfer heater 50 is, for example, a ribbon heater (sheet heater) in which glass fibers and heater wires are woven into a cylindrical shape, and can be expanded and contracted. The first guide 61 and the second guides 62-1 and 62-62. -2 and the third guide 63.

Next, when the manufacturer (designer) connects the transfer 70 between the sample introduction unit 10 and the first column unit 31, the inlet end of the transfer 70 and the sample introduction unit 10 are connected with a nut, a ferrule, or the like. Connect with. Thereafter, the transfer 70 is passed through the first guide 61, and the outlet end of the transfer 70 and the inlet end of the inactivated capillary tube 31e of the first column unit 31 are connected using a union 71 or the like. At this time, since the transfer 70 is guided by the first guide 61, the connection location is not mistaken.
Next, when the manufacturer (designer) connects the transfer 70 between the FID 21 and the first column unit 31, the outlet end of the transfer 70 and the FID 21 are connected by a nut, a ferrule, or the like. Thereafter, the transfer 70 is passed through the second guide 62-1, and the inlet end of the transfer 70 and the outlet end of the deactivated capillary tube 31e of the first column unit 31 are connected using the union 71 or the like. . At this time, since the transfer 70 is guided by the second guide 62-1, the connection location is not mistaken.

<Second embodiment>
FIG. 3 is a schematic configuration diagram of an example of a gas chromatograph apparatus according to the second embodiment. The gas chromatograph apparatus 1 includes a housing body, a sample introduction unit 10 through which a sample is introduced and vaporized, a flame ionization detector (FID) 21, a first column unit 31, a second column unit 32, a transfer 70, a first guide 61, second guides 62-1 and 62-2, a third guide 63, and a transfer heater 50 that controls the temperature of the transfer 70.

Next, when the manufacturer (designer) connects the transfer 70 between the first column unit 31 and the second column unit 32, the inlet end of the transfer 70 and the first column unit 31 are connected to the union 71. Connect using etc. Thereafter, the transfer 70 is passed through the inside of the third guide 63, and the outlet end of the transfer 70 and the inlet end of the inactivated capillary tube 31e of the second column unit 32 are connected using a union 71 or the like. At this time, since the transfer 70 is guided by the third guide 63, the connection location is not mistaken.
Next, the manufacturer (designer) attaches one transfer heater 50 around the first guide 61, the second guides 62-1 and 62-2, and the third guide 63. At this time, the transfer heater 50 is attached so that the union 71 and the like can also be heated. As a result, the union 71 is also heated together with the transfer 70 during the analysis, and as a result, the problem of condensation and adsorption of the sample components due to the cold spot does not occur.

Here, an assembly process for assembling the gas chromatograph apparatus 1 including the first column unit 31 and the second column unit 32 will be described.
First, the manufacturer (designer) attaches the sample introduction unit 10 and the FID 21 to the opening of the upper surface wall 80a. Next, the manufacturer (designer) arranges the first column unit 31 and the second column unit 32 inside the housing 80. Next, the manufacturer (designer) attaches the first guide 61 between the proximity part of the sample introduction part 10 and the proximity part of the first column unit 31, and the proximity of the FID 21 and the second column unit 32. The second guide 62-2 is attached between the first column unit 31 and the third guide 63 between the adjacent portion of the first column unit 31 and the adjacent portion of the second column unit 32. At this time, since the marks are formed at the end portions of the respective guides 61 to 63, the connection locations are not mistaken.

  As described above, according to the gas chromatograph apparatus 1 of the present invention, one transfer heater 50 is arranged around the first guide 61, the second guides 62-1, 62-2, and the third guide 63. Therefore, power consumption can be reduced when adjusting the temperature of the transfer 70 during analysis. In addition, since guides 61 to 63 for guiding and protecting the connection location of the transfer 70 are used, the connection location is wrong during the assembly process, or the transfer 70 is damaged due to interference between the connection operations. It will not be.

  In the assembly process as described above, when the first guide 61 to the third guide 63 are attached, the second guide 62-1 is also attached between the proximity portion of the first column unit 31 and the proximity portion of the FID 21. Thereafter, when the transfer 70 is arranged inside the first guide 61 to the third guide 63, the transfer 70 is also arranged inside the second guide 62-2.

<Third embodiment>
FIG. 4A is a schematic configuration diagram of an example of a gas chromatograph apparatus according to the third embodiment. In addition, the same code | symbol is attached | subjected about the thing similar to the gas chromatograph apparatus 1 mentioned above.
The gas chromatograph apparatus 101 includes a housing body, a sample introduction unit 10 through which a sample is introduced and vaporized, a first hydrogen flame ionization detector (first FID) 21, and a second hydrogen flame ionization detector (second FID). ) 22, first column unit 31, third column unit 33, flow path changing connection mechanism 90, transfer 70, first guide 161, second guides 162-1, 162-2, 169 The third guide 163, the fourth guides 165-1, 165-2, 165-3, the fifth guide 166, and the transfer heater 50 for controlling the temperature of the transfer 70 are provided.

The housing body is surrounded by an upper wall 180a, a lower wall 180b, a left wall 180c, a right wall 180d, a rear wall (not shown), and a front door (not shown) serving as a front wall. A cubic housing 180 is provided.
The front door is formed to be openable and closable with the left end as an axis, and the interior space of the housing 180 is opened by an analyzer or manufacturer (designer) opening the front door.
Three openings to which the sample introduction part 10, the first FID 21, and the second FID 22 are respectively attached are formed in the upper surface wall 180a. In addition, one opening to which the flow path changing connection mechanism 90 is attached is formed in the lower wall 180b.

FIG. 5 is a schematic configuration diagram of an example of a flow path changing connection mechanism.
The flow path changing connection mechanism 90 includes a switching element (connector) 91, a pressure control device (APC) 92 that supplies a carrier gas (He gas) at a set pressure P, a three-way solenoid valve (flow path switching valve) 93, Is provided.
The switching element 91 includes a first column introduction portion 91a that is a space in which the transfer 70 from the outlet end of the first column unit 31 is inserted from the left side, and a transfer 70 from the inlet end of the third column unit 33 is inserted from the right side. A third column introducing portion 91b that is a space to be connected, and a connecting flow path 91c that connects the first column introducing portion 91a and the third column introducing portion 91b at the center.
Further, a flow path connected to the first FID 21 is formed on the right side of the first column introduction portion 91a, and a He gas pressure ΔP1 is lowered at the central portion of the first column introduction portion 91a. A flow path connected to the APC 92 through the one resistance tube 91d is formed. As a result, the pressure in the first column introducing portion 91a is always a constant pressure P−ΔP1.

  Further, the central part of the third column introduction part 91b is connected to the APC 92 via the second resistance pipe 91e for lowering the pressure ΔP2 (> ΔP1) of the He gas (see FIG. 5B), or A flow path that can be switched by the three-way solenoid valve 93 is formed so as to be connected to the APC 92 without passing through the second resistance tube 91e (see FIG. 5A). Thereby, when connected with APC92 via the 2nd resistance pipe | tube 91e, the pressure of the 3rd column introducing | transducing part 91b becomes P- (DELTA) P2, As a result, the 1st column introducing | transducing part 91a is P- (DELTA) P1. Therefore, the outlet end of the first column introduction part 31 and the inlet end of the third column unit 33 are circulated. On the other hand, when connected to the APC 92 without passing through the second resistance tube 91e, the pressure of the third column introducing portion 91b becomes P, and as a result, the pressure of the first column introducing portion 91a is P-ΔP1. Then, the outlet end of the first column introduction part 31 and the first FID 21 come to circulate.

  The first guide 161 to the fifth guide 166 are stainless steel tubes each having an outer diameter of 1/16 inch and an inner diameter of 1 mm. And each guide 161-166 is attached in the shape which can connect between the proximity | contact part of a corresponding member, and the proximity | contact part of a member, respectively.

Here, an assembly process for assembling the gas chromatograph apparatus 101 will be described.
First, the manufacturer (designer) attaches the sample introduction unit 10, the first FID 21, and the second FID 22 to the opening of the top wall 180a. The manufacturer (designer) attaches the flow path changing connection mechanism 90 to the opening of the lower wall 180b. At this time, the switching element 91 is disposed inside the housing 180, and the APC 92 and the three-way electromagnetic valve 93 are disposed outside the housing 180.
Next, the manufacturer (designer) arranges the first column unit 31 and the third column unit 33 inside the housing 180. Next, the manufacturer (designer) attaches the first guide 161 to the fifth guide 166 so as to connect the adjacent portions of the corresponding members and the adjacent portions of the members.

  Next, the manufacturer (designer) connects the transfer 70 so as to connect the corresponding members to each other. Next, the manufacturer (designer) attaches one transfer heater 50 around the first guide 161 to the fifth guide 166. At this time, the transfer heater 50 is attached so that the union 71 and the like can also be heated.

  As described above, according to the gas chromatograph apparatus 101 of the present invention, since one transfer heater 50 is disposed around the first guide 161 to the fifth guide 166, the temperature of the transfer 70 is adjusted during analysis. In this case, power consumption can be reduced. Further, since guides 161 to 166 for guiding and protecting the connection portion of the transfer 70 are used, the connection portion is mistaken during the assembly process, or the transfer 70 is damaged due to interference between the connection operations. It will not be.

  FIG. 4 b is a schematic configuration diagram of another example of the gas chromatograph apparatus according to the third embodiment. The transfer 70 may be passed through the third guide 163 and the fourth guide 165-2 through the gas chromatograph apparatus shown in the third embodiment, and the second column unit 32 may be connected.

  FIG. 4 c is a schematic configuration diagram of another example of the gas chromatograph apparatus according to the third embodiment. When the flow path changing connection mechanism 90 and the third column unit 33 are removed from the main body 180, they can be handled as a gas chromatograph apparatus that can use one column unit.

  EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.

FIG. 6 is a schematic configuration diagram of an example of a gas chromatograph apparatus according to a reference example. In addition, the same code | symbol is attached | subjected about the thing similar to the gas chromatograph apparatus 1 mentioned above.
The gas chromatograph apparatus 201 includes an oven body 280, a sample introduction unit 10 into which a sample is introduced and vaporized, a hydrogen ionization detector (FID) 21, a column 31c, a transfer 70, a second guide 261, and a transfer 70. And a transfer heater 50 for controlling the temperature of the heater.
Using such a gas chromatograph apparatus 201, the performance of the transfer 70 disposed inside the second guide 261 (whether it affects the separation peak) was confirmed.

FIG. 8 is an example of a chromatogram obtained using the gas chromatograph apparatus 201. 8A shows the oven heater of the oven body 280 set to 325 ° C. and the transfer heater 50 set to 325 ° C. FIG. 8B shows the oven heater of the oven body 280 set to 325 ° C. The transfer heater 50 is set at 300 ° C., and FIG. 8C shows the oven heater 280 at 325 ° C. and the transfer heater 50 at 275 ° C. In addition, the vertical axis | shaft in the chromatogram shown in FIG. 8 shows the ionic strength I, and a horizontal axis shows time t.
In FIG. 8A and FIG. 8B, there is a peak indicating n-tetratetracontane (C44) at the position of time t = 8.8 minutes. On the other hand, in FIG. 8C, the reading is seen such that the peak indicating C44 disappears at the position of time t = 8.8 minutes and the peak indicating C44 exists at the position of time t = 9.0 minutes. Therefore, it has been found that there is no problem if the transfer heater 50 is controlled so that the temperature of the transfer 70 becomes 300 ° C. or higher, even if it is not controlled by the oven heater of the oven body 280.

  The present invention can be used in a gas chromatograph apparatus using a plurality of transfers.

DESCRIPTION OF SYMBOLS 1 Gas chromatograph apparatus 10 Sample introduction part 21 Hydrogen flame ionization detector (FID)
31 First column unit 32 Second column unit 50 Transfer heater 61 First guide 62 Second guide 63 Third guide 70 Transfer 80 Instrument wall (housing body)

Claims (3)

At least one sample inlet, at least one detector, and at least one column unit;
A gas chromatograph apparatus comprising a transfer connecting between the sample introduction unit and the column unit, and between the column unit and the detector,
A tubular first guide attached between the sample introduction unit and the column unit and through which the transfer is passed ;
A tubular second guide mounted between the column unit and the detector and through which the transfer is passed ;
A gas chromatograph device comprising: at least one heater attached around the first guide and the second guide. At least two or more of the column units;
A gas chromatograph apparatus comprising a transfer unit connected between the column unit and the column unit,
A tubular third guide attached between the column unit and the column unit , through which the transfer is passed ,
The gas chromatograph according to claim 1, further comprising at least one heater attached around the first guide, the second guide, and the third guide. It comprises a flow path changing connection mechanism that can be switched so as to either circulate toward the column unit or circulate toward the detector,
A gas chromatograph apparatus comprising a transfer connected between the flow path changing connection mechanism and the column unit, and between the flow path changing connection mechanism and the detector,
A tubular fourth guide that is attached between the column unit and the flow path changing connection mechanism and through which the transfer is passed ;
A tubular fifth guide attached between the flow path changing connection mechanism and the detector, and through which the transfer is passed ,
Said first guide, the second guide, the third guide, said fourth guide, and, according to claim 2, characterized in that it comprises at least one heater attached around the fifth guide Gas chromatograph device.