JPS63204147A - Parcelling trap apparatus for gas chromatograph - Google Patents

Abstract

PURPOSE:To achieve an easier and quicker trapping operation, by switching a trap tube simply by rotation or parallel movement of a trap cartridge. CONSTITUTION:A gas chromatograph 1 is loaded with a trap cartridge 50 and outflow components from the gas chromatograph 1 are trapped repeatedly to four with a switching by turning a mounting knob 10 timed for the outflow of components. Upon the end of a trapping operation, the cartridge 50 is mounted on an analyzer 20 to position specified trap tubes 6-1-6-4 at a sample introduction port 25, the trap tubes mounted at the introduction port 25 are heated and separation components trapped sent out to the analyzer 20 by a purging gas from an inlet 23. As analysis of one component ends, other trap tubes are positioned at the sample introduction port 25 by turning the mounting knob 10. In this manner, the introduction of samples is repeated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a preparative trapping device that repeatedly traps components separated by a gas chromatograph and uses them as analysis samples for other analytical devices.

(Prior Art) The outflow gas from a gas chromatograph is directly guided to another analysis device (for example, an infrared spectrophotometer), and components separated by the gas chromatograph are analyzed online. However, the amount of effluent components separated by the gas chromatograph is small and may not reach the amount of sample required for other analytical devices.

If the amount of separated components obtained in one gas chromatograph operation is small, the separated components can be trapped multiple times and introduced into other analyzers as shown in Figures 4 and 5. is being carried out.

In FIG. 4, 30 is a gas chromatograph, and 34 is a trap attached to the outlet of the gas chromatograph. 32
is another analytical device such as an infrared spectrophotometer, and a trap 34 that traps a specific outflow component from the gas chromatograph 30 is attached to the sample inlet of another analytical device 32, heated by a heater 36, and then The trapped components are expelled and introduced as a sample into the analyzer 32.

FIG. 5 shows an example of trapping three times of outflow components from the gas chromatograph 30. Ingredient a.

It is assumed that components b and c are to be trapped. In the first gas chromatograph analysis, as shown in FIG. 5(1)L, the first trap 34 is attached to the gas chromatograph 30 for the time period during which component a flows out from the gas chromatograph 30, and then the component b flows out. The second trap 34 is attached to the gas chromatograph 30 for a period of time to
A third trap 34 is attached to the gas chromatograph 30 only during the period R where the gas flows out. By repeating this operation for the second gas chromatography analysis and the third gas chromatography 1-graph analysis, only component a is trapped in the first trap three times, and all components are trapped in the second 1-lap. Only component C was trapped three times, and only component C was trapped three times in the third trap.

be done. By attaching each trap 34 to another analyzer 32 and heating it with a heater 36, it is possible to introduce each concentrated component as a sample.

(Problems to be Solved by the Invention) In the conventional trap operation, it is necessary to replace one trap for each separated component flowing out from the gas chromatograph, and there is a problem that the operation is troublesome. Furthermore, although some peaks of components flowing out of the gas chromatograph end in about one second, such short-term peaks may not be enough to replace the trap in time.

Furthermore, expelling the trapped components requires rapid heating of the trap tube.

SUMMARY OF THE INVENTION An object of the present invention is to provide a preparative trapping device that facilitates the trapping operation of components flowing out of a gas chromatograph and also allows easy introduction of trapped samples to other analytical devices.

(Means for Solving the Problems) In the preparative trap device of the present invention, a plurality of trap tubes are assembled into a cartridge and can be attached to a gas chromatograph, making it easy to switch traps for each preparative component. The trap device can also be attached to other analytical devices. Further, the trap is provided with a heater, so that when the trap is attached to another analyzer, a power supply terminal is provided in the analyzer so that the trap attached to the sample introduction port can be heated.

That is, in the present invention, a plurality of trap tubes each filled with an adsorbent and equipped with a heater are provided, and one end of the trap tube is attached to a gas chromatograph or other analysis device, and one end of the trap tube is connected to the outlet of the gas chromatograph or the other analysis device. a trap cartridge that is attached to the sample inlet of the analyzer and equipped with a mechanism that can switch the trap tube; and a trap cartridge that is attached to the other end of the trap tube that is attached to the sample inlet of the other analyzer. A connection part having a means for supplying gas and a terminal for supplying power to the heater of the attached trap tube is provided.

(Example) Figure 1 is a partially cutaway front view showing the preparative trap device of one example installed in a gas chromatograph, Figure 2 is a right side view of Figure 1, and Figure 3 is the same implementation. FIG. 7 is a partially cutaway front view showing the example attached to another analyzer.

5o is a trap cartridge. As shown in FIG. 2, the L-wrap holder 5 of the trap cartridge 50 is provided with four trap pipes 6-1 to 6-4 at 90 degree positions on the circumference. All trap pipes 6
-1 to 6-4 have the same structure. Trap pipe 6-1
To explain this, an adsorbent 7 is filled inside a cylindrical tube, and a heater 8 is wound around the outside of the tube. A heater connection terminal 9 of a heater 8 is provided on the outer circumferential surface of the trap holder 5 .

The trap holder 5 can be attached to the gas chromatograph 1 by means of a knob 10, as shown in FIG. In the installed state, the trap tube (e.g. 6
-1) one end can be aligned with the outlet 2 of the gas chroma 1-graph 1; Note that 3 is a heat insulation block and 4 is a heat insulating material.

By rotating the attachment knob 10, the trap pipe aligned with the outlet 2 can be switched between the trap pipes 6-1 to 6-4.

In FIG. 3, a trap cartridge 50 is attached to an analytical device 20, such as an infrared spectrophotometer. At this time, one end of the trap tube (for example, 6-1) is aligned with the sample introduction port 25 of the analyzer 20.

The analyzer 20 is provided with a connection part 24, and the connection part 24 is provided with an expelled gas inlet 23, and the gas supply port is connected to a trap tube (for example, 6
-1) It is positioned so as to be located at the other end. The connecting portion 24 is also provided with a contact brush 21 as a terminal connected to the heater power source 22, which contacts the heater connecting terminal 9 of the trap tube 6-1 attached to the sample introduction port 25 to supply power to the heater 8. become able to.

Even when the trap cartridge 50 is attached to the analyzer 20, installation is done by rotating the knob 10 to move the trap tube aligned with the sample inlet 25 between the trap tubes 6-1 to 6-4. Can be switched.

The trap holder 5 of the trap cartridge 50 is provided with recesses 52 at four positions spaced apart by 90 degrees, while the gas chromatograph 1 and the analyzer 20 are provided with clips 54.

Attachment is done by rotating the knob 10 and aligning one of the recesses 52 with the clip 54, thereby attaching the trap to a predetermined trap pipe 6-.
1 to 6-4 can be aligned with the outlet 2 of the gas chromatograph 1 or the sample inlet 25 of the analyzer 20.

Next, the operation of this embodiment will be explained.

First, as shown in FIG. 1, the trap cartridge 50 is attached to the gas chromatograph 1, and the outflow from the gas chromatograph 1 is trapped at the timing of component outflow. By rotating the knob 10 in accordance with the timing of outflow of each component, up to four components can be switched and trapped repeatedly. As a result, each trap 6-1 to G
-4, each component is concentrated.

After the trap operation is completed, the trap cartridge 50
is attached to the analyzer 20 as shown in FIG.

Predetermined trap tubes 6-1 to 6-4 are aligned with the sample introduction port 25, and expelled gas is supplied from one end. Then, depending on the sample introduction time, the heater 8 is turned on to heat the trap tube attached to the sample introduction port 25, and the trapped separated components are expelled and sent to the analyzer 20 as gas.

- When the component analysis is completed, the installation rotates the knob 10 to align the other trap tube with the sample introduction port 25, and repeats sample introduction in the same manner.

In the embodiment, the trap cartridge 50 is of a rotary type, and a mechanism is shown in which a predetermined trap tube is aligned with the outlet of a gas chromatograph or the sample inlet of an analyzer by rotation operation. It is also possible to use a mechanism in which a predetermined trap tube is aligned with an outlet of a gas chromatograph or a sample inlet of an analyzer by moving a trap cartridge equipped with a trap tube in parallel.

Further, although the embodiment shows a mechanism in which the trap tubes are manually switched, the rotation or parallel movement of the trap cartridge 50 can be automated in the trap operation using an output signal from a gas chromatograph or a timer. Such automation can be easily accomplished.

(Effects of the Invention) One peak of some of the components flowing out from the gas chromatograph ends in about a few seconds, and it may be necessary to quickly switch the trap tube.

If the trap pipe was replaced each time as in the past, the operation would be troublesome and time consuming.

However, according to the present invention, the trap tubes can be switched simply by rotating or translating the trap cartridge, making the trap operation easier and faster.

In addition, a heater is installed in the trap pipe and the trap is removed.

When the cartridge is attached to another analyzer, the heater connection terminal and the power supply terminal are automatically connected, eliminating the need to attach a heater each time a sample is introduced, and The installation operation will also be easier.

Furthermore, since the trap tube is equipped with a heater, the trap can be rapidly heated and the trapped components can be quickly expelled.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing an embodiment installed in a gas chromatograph, Fig. 2 is a right side view of Fig. 1,
Fig. 3 is a partially cutaway front view showing the same embodiment installed in another analyzer, Fig. 4 is a schematic diagram showing conventional trap operation, and Fig. 5 is a gas chromatogram showing conventional trap operation. It is. DESCRIPTION OF SYMBOLS 1... Gas chromatograph, 2... Outlet, 5... I-shaped holder, 6-1 to 6-4... Trap pipe, 7...・・・
Adsorbent, 8... Heater, 9... Heater connection terminal, 20... Other analyzer, 21... Contact brush, 22... Heater power supply, 23... Exile gas inlet, 24... Connection section, 25... Sample introduction port, 50... Trap cartridge, 52...
... recess, 54 ... clip.

Claims (1)

[Claims] (1) A plurality of trap tubes each filled with adsorbent and equipped with a heater are provided, and one end of the trap tube is attached to a gas chromatograph or other analytical device, and one end of the trap tube is connected to the outlet of the gas chromatograph or the sample is introduced into the other analytical device. Attach it to your mouth,
and a trap cartridge equipped with a mechanism capable of switching the trap tube, a means for supplying expelled gas to the other end of the trap tube installed in the sample inlet and installed in the other analyzer, and the attachment. a connection part having a terminal for supplying power to a heater in a trapped trap tube.