JP2861336B2 - Applied flow path of gas chromatograph - Google Patents
Applied flow path of gas chromatographInfo
- Publication number
- JP2861336B2 JP2861336B2 JP23134690A JP23134690A JP2861336B2 JP 2861336 B2 JP2861336 B2 JP 2861336B2 JP 23134690 A JP23134690 A JP 23134690A JP 23134690 A JP23134690 A JP 23134690A JP 2861336 B2 JP2861336 B2 JP 2861336B2
- Authority
- JP
- Japan
- Prior art keywords
- flow path
- column
- sample
- gas chromatograph
- electromagnetic valve
- 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.)
- Expired - Lifetime
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、分析機器の一種であるガスクロマトグラ
フの応用流路に関する。Description: TECHNICAL FIELD The present invention relates to an application channel of a gas chromatograph, which is a kind of an analytical instrument.
〔従来の技術〕 ガスクロマトグラフを使用して試料を分析する場合、
試料にはカラム固定相により分離出来ない成分を含んで
いるものがある。そのような試料の溶出成分は分離が不
十分となり重なったピークで現れる。このように一種の
カラムで分離出来ない成分がある場合、重なって溶出す
るピーク部分を選択して特性の異なるカラムへ部分的に
送り込み分離を行うマルチディメンショナルガスクロマ
トグラフィ（MDGC）が一般的である。[Prior art] When analyzing a sample using a gas chromatograph,
Some samples contain components that cannot be separated by the column stationary phase. The eluted components of such samples appear as overlapping peaks due to poor separation. When there are components that cannot be separated by a single column, multi-dimensional gas chromatography (MDGC), in which peaks that elute and overlap are partially sent to columns with different characteristics and separated, is generally used. .
MDGCは特性の異なるカラムを複数本恒温室に配置し、
切換バルブを用いて分析する試料により切り換え、その
都度カラム温度を変えて分析しなければならない。従っ
て装置の流路構成が複雑であるだけでなく操作も複雑且
つ面倒となる。この発明は流路構成を単純にし上記する
課題を解決するためになされたものである。MDGC arranges multiple columns with different characteristics in a constant temperature room,
It is necessary to switch using a switching valve according to the sample to be analyzed, and to perform analysis by changing the column temperature each time. Therefore, not only the flow path configuration of the device is complicated, but also the operation is complicated and troublesome. The present invention has been made to solve the above-described problems by simplifying the flow path configuration.
即ち、この発明にかかるガスクロマトグラフの応用流
路が、試料注入部とキャリヤガス流入管を接続した試料
気化室と、三方コックに螺合させカラムを貫通可能とし
たナットを有する流路切換アダプタと、二つの開閉口を
有しカラムオーブンの外へ設置される電磁バルブとを備
えると共に、前記試料気化室と前記流路切換アダプタと
の間に一本若しくは二本のカラムを接続し、更に前記流
路切換アダプタと前記電磁バルブとの間には二本のキャ
ピラリチューブを接続したことを特徴とする 〔作用〕 この発明にかかるガスクロマトグラフの応用流路を上
記手段とすれば、一つのカラムで分離出来ない試料成分
がある場合、電磁バルブの開閉口を切り換えることによ
って試料気化室から流路切換アダプタ内への溶出成分の
カラムでの流れを変え、もう一方のカラムで分離させる
ことが出来る。また、試料気化室に一本のカラムのみを
接続した場合、アダプタの他端にキャピラリチューブを
接続しパージガスを供給することによりカラムから溶出
する成分中必要な成分のみを分離して検出することが出
来る。特に分析に不要な溶媒等を系外に追い出す目的に
も使用することが出来る。That is, an application flow path of the gas chromatograph according to the present invention is a flow path switching adapter having a sample vaporization chamber in which a sample injection section and a carrier gas inflow pipe are connected, and a nut screwed into a three-way cock and capable of penetrating the column. An electromagnetic valve having two opening / closing ports and installed outside the column oven, and connecting one or two columns between the sample vaporization chamber and the flow path switching adapter, further comprising the Two capillary tubes are connected between the flow path switching adapter and the electromagnetic valve. [Operation] If the above-described means is used as the application flow path of the gas chromatograph according to the present invention, one column can be used. When there is a sample component that cannot be separated, the flow of the eluting component from the sample vaporization chamber into the flow path switching adapter in the column is changed by switching the opening and closing port of the electromagnetic valve. It can be separated on the other column. When only one column is connected to the sample vaporization chamber, a capillary tube is connected to the other end of the adapter and a purge gas is supplied to separate and detect only necessary components from the components eluted from the column. I can do it. In particular, it can be used for the purpose of driving a solvent or the like unnecessary for analysis out of the system.
以下、この発明の具体的実施例について図面を参照し
て説明する。Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
第１図はこの発明であるガスクロマトグラフの応用流
路の構成配置図である。試料気化室１には試料注入部２
とキャリヤガス流入管３が接続されている。４は流路切
換アダプタであって、前記試料気化室１との間にカラム
５とカラム６との二本のカラム（キャピラリカラム）が
並列に連結されている。また７は電磁バルブであって前
記流路切換バルブ４との間にキャピラリチューブ８とキ
ャピラリチューブ９との二本のキャピラリチューブが並
列に連結されている。該電磁バルブ７には二つの開閉口
ａと開閉口ｂを備えている。尚、該電磁バルブ７はカラ
ムオーブンの外へ設置する。FIG. 1 is a diagram showing the configuration and arrangement of an application channel of a gas chromatograph according to the present invention. A sample injection section 2 is provided in the sample vaporizing chamber 1.
And the carrier gas inflow pipe 3 are connected. Reference numeral 4 denotes a channel switching adapter, and two columns (capillary columns) of a column 5 and a column 6 are connected in parallel with the sample vaporizing chamber 1. Reference numeral 7 denotes an electromagnetic valve, and two capillary tubes, a capillary tube 8 and a capillary tube 9, are connected in parallel with the flow path switching valve 4. The electromagnetic valve 7 has two opening / closing ports a and b. The electromagnetic valve 7 is installed outside the column oven.
前記流路切換アダプタ４は三方の出入口を有する構造
となっているが、次にその構造の詳細について説明す
る。Although the flow path switching adapter 4 has a structure having three sides of the entrance and exit, details of the structure will be described below.
第２図は前記流路切換アダプタ４の縦断面図である。
即ち、この流路切換アダプタ４はネジ部を設けた三方コ
ック41と、ナット42と43及び44とより成る。そして前記
三方コック41のうち流入口41aには前記キャピラリカラ
ム５とキャピラリチューブ８の端部をフェルール11を通
してナット42で連結し、同じく流入口41bに前記キャピ
ラリカラム６とキャピラリチューブ９の端部をフェルー
ル12を通してナット43で連結する。また、該三方コック
41の流出口41cにはキャピラリチューブ10の端部をフェ
ルール13を通してナット44で締付け連結する。そして該
キャピラリチューブ10は検出器（図示せず）へ連結す
る。FIG. 2 is a longitudinal sectional view of the flow path switching adapter 4.
That is, the flow path switching adapter 4 includes a three-way cock 41 provided with a thread portion, and nuts 42, 43 and 44. The end of the capillary column 5 and the end of the capillary tube 8 are connected to the inflow port 41a of the three-way cock 41 by a nut 42 through the ferrule 11, and the end of the capillary column 6 and the end of the capillary tube 9 are connected to the inflow port 41b. The nuts 43 are connected through the ferrules 12. Also, the three-way cock
The end of the capillary tube 10 is connected to the outlet 41c of the 41 by tightening a nut 44 through the ferrule 13. Then, the capillary tube 10 is connected to a detector (not shown).
この発明にかかるガスクロマトグラフの応用流路は以
上のような構成からなるが、次にその操作について説明
する。The application channel of the gas chromatograph according to the present invention has the above-described configuration. Next, the operation thereof will be described.
第３図は前記電磁バルブ７の二つの開閉口ａとｂとの
「開」、「閉」と時間差と前記カラム５と６で分析され
る試料のクロマトグラムの関係を示す図である。FIG. 3 is a diagram showing the relationship between the "open" and "close" times of the two opening / closing ports a and b of the electromagnetic valve 7 and the time difference, and the chromatogram of the sample analyzed in the columns 5 and 6.
成分がＡ、Ｂ、Ｃ、Ｄ、Ｅからなる試料を考える。
今、カラム５では成分Ｂ、Ｃが分離不十分であり、カラ
ム６では成分Ｂ、Ｃは分離出来るが、成分Ｄ、Ｅが重な
り分離出来ないものとする。このような試料の場合は次
のようにして分析する。Consider a sample whose components are A, B, C, D, and E.
Now, it is assumed that components B and C are insufficiently separated in column 5, and components B and C can be separated in column 6, but components D and E overlap and cannot be separated. Such a sample is analyzed as follows.
先ず、電磁バルブ７の開閉口ｂを「開」として試料を
注入口２より注入する。First, the sample is injected from the injection port 2 with the opening / closing port b of the electromagnetic valve 7 opened.
この状態ではカラム５から成分Ａが溶出して前記流路
切換アダプタ４内を左から右へ流れ、検出器へ導入され
る。In this state, the component A is eluted from the column 5 and flows from left to right in the flow path switching adapter 4 and is introduced into the detector.
成分Ａが検出された後T1時間経過後電磁バルブ７の開
閉口ｂを「閉」とし、開閉口ａを「開」とする。The closure b of time T 1 elapses after the electromagnetic valve 7 after the component A is detected as a "closed", the off opening a to "open".
成分Ｂ、Ｃがカラム６から溶出して流路切換アダプタ
４内を右から左へ流れ、検出器へ導入される。Components B and C elute from the column 6 and flow from right to left in the flow path switching adapter 4 and are introduced into the detector.
次に、成分Ｃがカラム６から溶出した後T2時間後再び
電磁バルブ７の開閉口ａを「閉」とし、開閉口ｂを
「開」とする。Next, two hours after the component C elutes from the column 6, the opening a of the electromagnetic valve 7 is again closed and the opening b of the electromagnetic valve 7 is opened.
成分Ｄ、Ｅがカラム５から溶出して流路切換アダプタ
４内を左から右へ流れ、検出器へ導入される。Components D and E elute from the column 5 and flow from left to right in the flow path switching adapter 4 and are introduced into the detector.
尚、前記電磁バルブ７の切換はタイムプログラムなど
でコントロールする。The switching of the electromagnetic valve 7 is controlled by a time program or the like.
この発明にかかるガスクロマトグラフの応用流路の一
実施例は以上のようであるが、更に変形例として、気化
室１には一本のカラムのみを接続し、流路切換アダプタ
４の他端には試料気化室から独立してガスを供給出来る
キャピラリチューブを接続すればカラムから溶出する成
分中必要な成分のみを分離、検出することが出来る。ま
た、特に分析に不要な溶媒等を系外に追い出す目的にも
使用することが出来る。尚、この発明にかかるガスクロ
マトグラフの応用流路はキャピラリカラムのみでなく、
パックドカラムを使用しても同様な原理で流路を構成す
ることが出来る。One embodiment of the applied flow channel of the gas chromatograph according to the present invention is as described above. As a further modified example, only one column is connected to the vaporization chamber 1 and the other end of the flow channel switching adapter 4 is connected to the other end. By connecting a capillary tube that can supply gas independently from the sample vaporization chamber, only the necessary components out of the components eluted from the column can be separated and detected. In addition, it can be used particularly for the purpose of driving a solvent or the like unnecessary for analysis out of the system. In addition, the application channel of the gas chromatograph according to the present invention is not limited to the capillary column,
Even if a packed column is used, the flow path can be formed on the same principle.
この発明にかかるガスクロマトグラフの応用流路は以
上詳述したような構成としたので、従来のMDGCの如く複
雑でなく単純な構成で二種のカラムに導入された成分を
任意に選択して分離、検出することが出来る。また、カ
ラムを一種だけにした場合は目的成分ピークだけを検出
することができる。更に、検出器にとって好ましくない
溶媒を検出器に導入しないようにすることも可能である
等種々の特有の効果がある。Since the application channel of the gas chromatograph according to the present invention has a configuration as described in detail above, the components introduced into the two types of columns can be arbitrarily selected and separated by a simple and simple configuration as in the conventional MDGC. , Can be detected. When only one column is used, only the peak of the target component can be detected. Furthermore, there are various specific effects such as the fact that it is possible to prevent the introduction of a solvent that is not desirable for the detector into the detector.
第１図はこの発明であるガスクロマトグラフの応用流路
の構成配置図、第２図は第１図の流路切換アダプタの縦
断面図、第３図は電磁バルブの二つの開閉口に「開」、
「閉」と時間差と種類の異なるカラムで分析される試料
のクロマトグラムの関係を示す図である。 １……試料気化室、２……試料注入部 ３……キャリヤガス導入管、４……流路切換バルブ ５、６……キャピラリカラム、７……電磁バルブ ８、９、10……キャピラリチューブ 11、12、13……フェルール 41……三方コック、42、43、44……ナットFIG. 1 is a diagram showing the configuration and arrangement of an applied flow channel of a gas chromatograph according to the present invention, FIG. 2 is a longitudinal sectional view of a flow channel switching adapter shown in FIG. 1, and FIG. "
It is a figure which shows the relationship of the chromatogram of the sample analyzed by a column with different "closed", a time difference, and a kind. DESCRIPTION OF SYMBOLS 1 ... Sample vaporization chamber, 2 ... Sample injection part 3 ... Carrier gas introduction pipe 4, ... Flow path switching valve 5, 6 ... Capillary column, 7 ... Electromagnetic valve 8, 9, 10 ... Capillary tube 11, 12, 13 ... Ferrule 41 ... Three-way cock, 42, 43, 44 ... Nut
Claims (1)
た試料気化室と、三方コックに螺合させカラムを貫通可
能としたナットを有する流路切換アダプタと、二つの開
閉口を有しカラムオーブンの外へ設置される電磁バルブ
とを備えると共に、前記試料気化室と前記流路切換アダ
プタとの間に一本若しくは二本のカラムを接続し、更に
前記流路切換アダプタと前記電磁バルブとの間には二本
のキャピラリチューブを接続したことを特徴とするガス
クロマトグラフの応用流路。1. A sample vaporization chamber in which a sample injection part and a carrier gas inflow tube are connected, a flow path switching adapter having a nut screwed into a three-way cock and capable of penetrating the column, and a column having two opening / closing ports. With an electromagnetic valve installed outside the oven, one or two columns are connected between the sample vaporization chamber and the flow path switching adapter, and further, the flow path switching adapter and the electromagnetic valve An application flow path for a gas chromatograph, wherein two capillary tubes are connected between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23134690A JP2861336B2 (en) | 1990-08-31 | 1990-08-31 | Applied flow path of gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23134690A JP2861336B2 (en) | 1990-08-31 | 1990-08-31 | Applied flow path of gas chromatograph |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04110765A JPH04110765A (en) | 1992-04-13 |
| JP2861336B2 true JP2861336B2 (en) | 1999-02-24 |
Family
ID=16922190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23134690A Expired - Lifetime JP2861336B2 (en) | 1990-08-31 | 1990-08-31 | Applied flow path of gas chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2861336B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6272937B1 (en) * | 1998-10-26 | 2001-08-14 | Eai Corporation | Gas sampling system |
-
1990
- 1990-08-31 JP JP23134690A patent/JP2861336B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04110765A (en) | 1992-04-13 |
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