JPS6273163A - Gas chromatograph apparatus - Google Patents
Gas chromatograph apparatusInfo
- Publication number
- JPS6273163A JPS6273163A JP21434285A JP21434285A JPS6273163A JP S6273163 A JPS6273163 A JP S6273163A JP 21434285 A JP21434285 A JP 21434285A JP 21434285 A JP21434285 A JP 21434285A JP S6273163 A JPS6273163 A JP S6273163A
- Authority
- JP
- Japan
- Prior art keywords
- capillary column
- carrier gas
- resistance
- branch pipe
- capillary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N30/10—Preparation using a splitter
Landscapes
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
Description
【発明の詳細な説明】
イ、産業上の利用分野
本発明は、ギヤピラリカラムを使用したガスクロマトグ
ラフ装置、より詳しくはスプリット比を調整する技術に
関する。DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a gas chromatograph apparatus using a gear pillar column, and more particularly to a technique for adjusting a split ratio.
口、従来技術
例えば、成分検出手段に質量分析計を使用する、いわゆ
るガスクロマトグラフ・質量分析装置にあっては、高い
法度のサンプルが質量分析計に流入するのを防1トする
ため、試料注入口に接続するカラムの流入側を分岐させ
て流路抵抗を接続し、この流路抵抗を操作することによ
ってスプリット比を調整することが行なわれている。1. Prior Art For example, in a so-called gas chromatograph/mass spectrometer that uses a mass spectrometer as a component detection means, sample injection is necessary to prevent highly sensitive samples from flowing into the mass spectrometer. The inflow side of the column connected to the inlet is branched to connect a flow path resistance, and the split ratio is adjusted by manipulating this flow path resistance.
ところで、試料を分離するカラムにキャピラリカラムを
使用した場合には、多数のキャピラリチューブを用意し
、これをスプリット比に合せてキャピラリチューブの長
さを調整することにより流路抵抗を設定することが行な
われていた。このため、多数のキャピラリチューブや接
続機構を必要とするばかりでなく、スプリット比を離散
的にしか設定することができないという問題があった。By the way, when a capillary column is used to separate the sample, it is possible to set the flow path resistance by preparing a large number of capillary tubes and adjusting the length of the capillary tubes according to the split ratio. It was being done. For this reason, there is a problem in that not only a large number of capillary tubes and connection mechanisms are required, but also the split ratio can only be set discretely.
ハ1発明の目的
本発明はこのような問題に鑑み、抵抗管としてのキャピ
ラリチューブを不要とするとともに、スプリット比を連
続的に変化させることができるキャピラリカラム型ガス
クロマトグラフ装置を提供することを目的とする。C1 Purpose of the Invention In view of the above-mentioned problems, an object of the present invention is to provide a capillary column type gas chromatograph device that does not require a capillary tube as a resistance tube and can continuously change the split ratio. shall be.
二9発明の構成
すなわち、本発明が特徴とするところは、キャピラリカ
ラムの流入側に調圧弁を介してキャリアガスを供給して
見かけ上の流路抵抗を変化させるようにした点にある。The configuration of the twenty-nine invention, that is, the feature of the present invention is that carrier gas is supplied to the inflow side of the capillary column via a pressure regulating valve to change the apparent flow resistance.
ホ、実施例
そこで、以下に本発明の詳細を図示した実施例に基づい
て説明する。第1図は、本発明の一実施例を示すもので
あって、図中符号1は、キャピラリカラムで、一端が分
岐管2を介して試料注入口3に、また他端が検出部を構
成する質量分析計10に接続されている6分端管2の他
端には、さらに分岐管4により分路され、一方の流路は
流路抵抗5を介して大気側に開放され、また他方の流路
は四方バルブ6に接続されている。この四方バルブ6に
は、圧力調整器7を介してキャリアガス源12に接続す
る流路と、溶媒8を収容した密封容器9を介して圧力調
整器7に接続する波路が連通していて、これら波路の一
方を選択可能とされている。E. Embodiments The details of the present invention will be explained below based on illustrated embodiments. FIG. 1 shows an embodiment of the present invention, in which reference numeral 1 denotes a capillary column, one end of which connects to a sample injection port 3 via a branch pipe 2, and the other end of which constitutes a detection section. The other end of the 6-minute end tube 2 connected to the mass spectrometer 10 is further shunted by a branch tube 4, one flow path is open to the atmosphere via a flow path resistance 5, and the other The flow path is connected to a four-way valve 6. This four-way valve 6 is connected to a flow path connected to a carrier gas source 12 via a pressure regulator 7 and a wave path connected to the pressure regulator 7 via a sealed container 9 containing a solvent 8. It is possible to select one of these wave paths.
なお1図中筒号11は、スプリットされた試料を収容す
る受器を示す。Note that cylinder number 11 in Figure 1 indicates a receiver that accommodates the split sample.
この実施例において、四方バルブ6をキャピラリカラム
1側に切換えた状態で(図中実線で示す流路)、試料注
入口3と圧力調整器7にキャリアガスを供給する。In this embodiment, carrier gas is supplied to the sample injection port 3 and the pressure regulator 7 with the four-way valve 6 switched to the capillary column 1 side (flow path indicated by a solid line in the figure).
このような準備を終えた段階で、試料注入口3から試料
を注入すると、この試料はキャリアガスに運ばれて分岐
管2に到達する。When such preparations are completed, a sample is injected from the sample injection port 3, and the sample is carried by the carrier gas and reaches the branch pipe 2.
試料注入口3からの試料を含むキャリアガスは、この分
岐管2においてキャピラリカラム1の管路抵抗と圧力調
整器7を介して供給されるキャリアガスの圧力を受け、
両者の比で定まる分流比によりキャピラリカラム1側と
分岐¥−4と流路抵抗5からなる大気開放流路に分流さ
れる。The carrier gas containing the sample from the sample injection port 3 is subjected to the pipe resistance of the capillary column 1 and the pressure of the carrier gas supplied via the pressure regulator 7 in this branch pipe 2.
The flow is divided into the capillary column 1 side, the branch ¥-4, and the air-opening flow path consisting of the flow path resistance 5 according to the split flow ratio determined by the ratio of the two.
すなわち、圧力調整器7から供給するキャリアガスの圧
力を低くしていくと、大気開放側に分流される試料の量
が徐々に多くなり、また反対に高くしていくとキャピラ
リカラム1側に分流される試料が徐々に多くなる。In other words, as the pressure of the carrier gas supplied from the pressure regulator 7 is lowered, the amount of sample diverted to the atmosphere open side gradually increases, and conversely, as the pressure is increased, the amount of sample is diverted to the capillary column 1 side. The number of samples to be analyzed gradually increases.
このようにして、圧力調整器7の操作により所定濃度に
スプリットされた試料は、キャピラリカラムlにより成
分毎に分離されて質量分析計10により分析される。他
方、大気側に排出された試料は、受器11やこれに至る
管路で凝縮する。試料の注入が終了した時点で四方切換
えバルブ6を他方側に切換えて(図中、点線で示す流路
)、キャリアガスにより密封容器9の溶媒8を分岐管4
から受器11に至る管路に流すと、管路内に凝縮してい
る試料が溶解されて受器11に流出し、試料が無駄なく
回収される。In this way, the sample is split to a predetermined concentration by operating the pressure regulator 7, and the components are separated by the capillary column 1 and analyzed by the mass spectrometer 10. On the other hand, the sample discharged to the atmosphere is condensed in the receiver 11 and the conduit leading thereto. When the injection of the sample is completed, the four-way switching valve 6 is switched to the other side (the flow path indicated by the dotted line in the figure), and the solvent 8 in the sealed container 9 is transferred to the branch pipe 4 using the carrier gas.
When the sample is poured into the pipe from the pipe to the receiver 11, the sample condensed in the pipe is dissolved and flows into the receiver 11, and the sample is recovered without waste.
また、受器11に予め溶媒等の液体を収容して排出端1
3に対する液面を調整することにより、管路抵抗つまり
スズリフト比を微調整することが可能となる。In addition, a liquid such as a solvent is stored in the receiver 11 in advance, and the discharge end 1
By adjusting the liquid level relative to No. 3, it becomes possible to finely adjust the pipe resistance, that is, the tin lift ratio.
なお、この実施例においては、質量分析計を検出手段に
用いた場合を例に採って説明したが、他の検出器を用い
た場合にも同様な作用を奏することは云うまでもない。Although this embodiment has been described using a mass spectrometer as the detection means, it goes without saying that the same effect can be achieved when other detectors are used.
へ、効果
以上、説明したように本発明によれば、試料注入口とキ
ャピラリカラムに至る管路の途中に圧力調整器を介して
キャリアガスを供給するようにしての〒、圧力MA整器
を操作するこkによりキャピラリカラムに流入させる試
料着を連続的に調整することができるばかりでなく、抵
抗管を形成するための多数のキャピラリカラムチューブ
を不要としてコストの低減と装置の小型化を図ることが
可能となる。Effects As described above, according to the present invention, carrier gas is supplied via a pressure regulator in the middle of the pipe line leading from the sample injection port to the capillary column, and the pressure MA regulator is used. Not only is it possible to continuously adjust the amount of sample flowing into the capillary column through operation, but it also eliminates the need for a large number of capillary column tubes to form a resistance tube, reducing costs and downsizing the device. becomes possible.
図は本発明の一実施例を示す装置の構成図である。
■・・・・キャピラリカラム 2.4・・・・分岐管
3・・・・試料注入口 7・・・・圧力調整器
11・・・・受器
■?・・・・キャリアガス源The figure is a configuration diagram of an apparatus showing an embodiment of the present invention. ■... Capillary column 2.4... Branch tube 3... Sample injection port 7... Pressure regulator 11... Receiver ■? ...Carrier gas source
Claims (1)
放流路に接続するとともに、前記分岐管に圧力調整機構
を介したキャリアガス供給流路を並列に接続してなるガ
スクロマトグラフ装置。A gas chromatograph apparatus in which a sample injection port and a capillary column are connected to a flow path open to the atmosphere via a branch pipe, and a carrier gas supply flow path via a pressure adjustment mechanism is connected in parallel to the branch pipe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21434285A JPS6273163A (en) | 1985-09-27 | 1985-09-27 | Gas chromatograph apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21434285A JPS6273163A (en) | 1985-09-27 | 1985-09-27 | Gas chromatograph apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6273163A true JPS6273163A (en) | 1987-04-03 |
Family
ID=16654175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21434285A Pending JPS6273163A (en) | 1985-09-27 | 1985-09-27 | Gas chromatograph apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6273163A (en) |
-
1985
- 1985-09-27 JP JP21434285A patent/JPS6273163A/en active Pending
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