JPH03194438A - Standard gas dilution device - Google Patents
Standard gas dilution deviceInfo
- Publication number
- JPH03194438A JPH03194438A JP33314189A JP33314189A JPH03194438A JP H03194438 A JPH03194438 A JP H03194438A JP 33314189 A JP33314189 A JP 33314189A JP 33314189 A JP33314189 A JP 33314189A JP H03194438 A JPH03194438 A JP H03194438A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- container
- dilution
- standard
- standard gas
- 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
- 238000010790 dilution Methods 0.000 title claims abstract description 26
- 239000012895 dilution Substances 0.000 title claims abstract description 26
- 239000003085 diluting agent Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000005070 sampling Methods 0.000 abstract description 9
- 238000011109 contamination Methods 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 230000000274 adsorptive effect Effects 0.000 abstract 1
- 238000004458 analytical method Methods 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011550 stock solution Substances 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010206 sensitivity analysis Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はガスクロマトグラフ等のガス分析用の標準ガス
の希釈装置に間するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a standard gas dilution device for gas analysis such as a gas chromatograph.
大気中のガス成分の分析には、ガスクロマトグラフが広
く用いられている。ガスクロマトグラフにより未知試料
中の分析成分の濃度を定量する場合、分析成分の既知の
濃度を含む標準ガスが必要である。このような分析を行
う作業場では、有機溶剤蒸気などで汚染されている場合
が多い、従来の作業は次のように行われていた。すなわ
ち、第２図に示すように負圧にした真空捕集びん２１内
にセプタム２２を通して注射器により標準原ガスを入れ
る。または、真空捕集びん２１内に蒸気圧の高い標準原
液を入れこれをガス化する。試薬びん２４にボンベなど
（図示せず）から給気管２５、ガラス管２６を用いて希
釈ガスを流し続けて満たし、試薬びん２４の開口部に真
空捕集びん２１のガス採取口２３を挿入して、希釈ガス
を吸引することにより行っていた。Gas chromatographs are widely used to analyze gas components in the atmosphere. When quantifying the concentration of an analytical component in an unknown sample using a gas chromatograph, a standard gas containing a known concentration of the analytical component is required. Workplaces where such analyzes are performed are often contaminated with organic solvent vapor, and conventional work was performed as follows. That is, as shown in FIG. 2, a standard source gas is introduced into a vacuum collection bottle 21 under negative pressure using a syringe through a septum 22. Alternatively, a standard stock solution with a high vapor pressure is placed in the vacuum collection bottle 21 and gasified. The reagent bottle 24 is continuously filled with diluent gas from a cylinder or the like (not shown) using the air supply pipe 25 and the glass tube 26, and the gas sampling port 23 of the vacuum collection bottle 21 is inserted into the opening of the reagent bottle 24. This was done by suctioning dilution gas.
しかしながら、このようにして作成された標準ガスには
、有機溶剤蒸気で汚れた作業場雰囲気が入り込んで汚染
され、高感度分析ではバックグランドの増加や混入した
成分との分離が不十分であったり、分析を困難にしてい
た。さらに、希釈ガスを吸引する際、希釈ガスの吸引量
が少なかったり、または、標準ガスが気散する恐れがあ
り、精度良く標準ガスの希釈ができないなどの課題を有
している。However, the standard gas prepared in this way is contaminated by the presence of a dirty workplace atmosphere with organic solvent vapor, resulting in increased background and insufficient separation of mixed components in high-sensitivity analysis. This made analysis difficult. Further, when drawing the dilution gas, there is a possibility that the amount of the dilution gas sucked is small, or the standard gas may be diffused, so that there is a problem that the standard gas cannot be diluted with high precision.
本発明の目的はこのような課題を解決するために創案さ
れたもので、作業場雰囲気による汚染を防止し、精度の
良い標準ガス希釈装置を提供することにある。The purpose of the present invention was devised to solve such problems, and it is an object of the present invention to provide a highly accurate standard gas dilution device that prevents contamination from the workplace atmosphere.
前記目的を達成するため、本発明に係る標準ガス希釈装
置においては、着脱可能なゴム栓を備えた密閉性フィル
ムからなる希釈標準ガス容器と、着脱可能なゴム栓を備
えた密閉性硬質材からなる採取容器と、
該採取容器を加温するヒーターとを有し、前記希釈標準
ガス容器と該採取容器とを三方バルブを介して接続する
とともに、該三方バルブに採収容器内と希釈標準ガス容
器内を吸引する吸引ポンプを接続し、さらに前記採取容
器に希釈ガスを導入する配管系に希釈ガス量を連続計量
する積算流量計を介装したものである。In order to achieve the above object, the standard gas diluter according to the present invention includes a diluted standard gas container made of an airtight film with a removable rubber stopper, and an airtight hard material with a removable rubber stopper. and a heater for heating the collection container, the diluted standard gas container and the collection container are connected via a three-way valve, and the three-way valve is connected to the inside of the collection container and the diluted standard gas. A suction pump that sucks the inside of the container is connected, and an integrating flowmeter that continuously measures the amount of diluent gas is interposed in the piping system that introduces diluent gas into the collection container.
本発明では、希釈ガスが導入管中に設けた積算流量計を
通過することにより、導入された希釈ガス量か計量され
、採取容器を加温することにより、吸着性物質の採取容
器内壁への吸着を抑え希釈標準ガス容器方向に送入され
る。また、採取容器と希釈標準ガス容器との間に三方バ
ルブが介装され、一方に吸引ポンプを設けることにより
、この吸引ポンプにより採取容器と希釈標準ガス容器内
を負圧にすることができ、これら容器内の残留ガスのガ
ス抜きや連続的な清浄化を迅速に行い得るようにしたも
のである。In the present invention, the amount of diluent gas introduced is measured by passing through an integrating flow meter installed in the introduction pipe, and by heating the collection container, the adsorbent material is transferred to the inner wall of the collection container. It suppresses adsorption and is sent toward the diluted standard gas container. In addition, a three-way valve is interposed between the collection container and the diluted standard gas container, and by providing a suction pump on one side, the suction pump can create a negative pressure inside the collection container and the diluted standard gas container. This allows for rapid removal of residual gas from these containers and continuous cleaning.
以下、図面を参照して本発明の実施例を詳細に説明する
。Embodiments of the present invention will be described in detail below with reference to the drawings.
第１図は本発明を実施した標準ガス希釈装置の一例を示
す構成図である。FIG. 1 is a block diagram showing an example of a standard gas dilution device embodying the present invention.
図において、希釈標準ガス容器ｌは密閉性フィルムで形
成され、所望の位置に注射針を通す着脱可能なゴム栓６
が設けられ、管状の流通口部は開閉バルブ９を備えてお
り、開閉バルブ９は三方バルブ４にジヨイント１７によ
り接続されている。採取容器２は密閉性硬質材で形成さ
れ、側面に注射針を通す着脱可能なゴム線５が設けられ
、両端の管状流通口部は開閉バルブ１０および１１を備
えており、その一方の開閉バルブ１１は三方バルブ４に
接続されている。採取容器２の他＠側の開閉バルブ１０
は、希釈ガスボンベ１４に接続された圧力調整器１２に
流量計１３及び希釈ガスを導入する導入管７を介して接
続されている。この導入管７の流量計１３のガス出口側
に、希釈ガス量を連続計量する積算流量計３が介装され
ている。さらに、三方バルブ４には採取容器２内と希釈
標準ガス容器１内を吸引する吸引ポンプ８が接続されて
いる。採取容器２にはヒーター１５が巻回されており、
このヒーター１５の温度を制御する温度コントローラー
１６が備えられている。In the figure, the dilution standard gas container l is formed of an airtight film and has a removable rubber stopper 6 through which the syringe needle is inserted into the desired position.
The tubular flow port portion is provided with an on-off valve 9, and the on-off valve 9 is connected to the three-way valve 4 by a joint 17. The collection container 2 is made of an airtight hard material, has a removable rubber wire 5 on its side for passing the injection needle through, and the tubular flow openings at both ends are equipped with on-off valves 10 and 11, one of which is an on-off valve. 11 is connected to the three-way valve 4. Opening/closing valve 10 on the other @ side of the collection container 2
is connected to a pressure regulator 12 connected to a dilution gas cylinder 14 via a flow meter 13 and an inlet pipe 7 for introducing dilution gas. On the gas outlet side of the flowmeter 13 of the introduction pipe 7, an integrating flowmeter 3 for continuously measuring the amount of dilution gas is installed. Furthermore, a suction pump 8 is connected to the three-way valve 4 for sucking the inside of the collection container 2 and the inside of the diluted standard gas container 1. A heater 15 is wound around the collection container 2,
A temperature controller 16 for controlling the temperature of this heater 15 is provided.
実施例において、標準原ガスを用いた場合、温度コント
ローラー１６を作動させ、採取容器２をヒーター１５に
より加温する。希釈標準ガス容器１を取り外した状態で
、三方バルブ４を採取容器２とジヨイント１７方向に流
通するように設定し、開閉バルブ１０および１１を開け
て採取容器２内に希釈ガスを十分通気した後、開閉バル
ブ１０および１１を閉じる。希釈標準ガス容器１を三方
バルブ４にジヨイント１７を用いて接続する。三方バル
ブ４を希釈標準ガス容器１に流通するように設定し、開
閉バルブ９を開けて希釈標準ガス容器１内の残留ガスを
吸引ポンプ８を用いて吸引する。三方バルブ４を希釈標
準ガス容器１と採取容器２が流通するように設定した後
、標準原ガスの一定量を注射器などによりゴム栓５から
採取容器２内に注入する。In the example, when a standard raw gas is used, the temperature controller 16 is activated and the collection container 2 is heated by the heater 15. With the diluted standard gas container 1 removed, the three-way valve 4 is set to flow in the direction of the sampling container 2 and the joint 17, and the on-off valves 10 and 11 are opened to sufficiently ventilate the diluent gas into the sampling container 2. , close the on-off valves 10 and 11. The diluted standard gas container 1 is connected to the three-way valve 4 using a joint 17. The three-way valve 4 is set to flow into the diluted standard gas container 1, the on-off valve 9 is opened, and the residual gas in the diluted standard gas container 1 is sucked out using the suction pump 8. After the three-way valve 4 is set so that the diluted standard gas container 1 and the collection container 2 are in communication, a certain amount of the standard source gas is injected into the collection container 2 through the rubber stopper 5 using a syringe or the like.
開閉バルブ９．１０および１１を開けて希釈標準ガス容
器１内に希釈ガスを導入し、開閉バルブ９，１０および
１１を閉じる。The on-off valves 9, 10 and 11 are opened to introduce diluent gas into the diluted standard gas container 1, and the on-off valves 9, 10 and 11 are closed.
次に、蒸気圧の高い標準原液を用いた場合、温度コント
ローラー１６を作動させ、採取容器２をヒーター１５に
より加温する。開閉バルブ１０を閉じた状態で、開閉バ
ルブ９および１１を開け、吸引ポンプ８により希釈標準
ガス容器１内の残留ガスを吸引し、採取容器２内を十分
に負圧とする。開閉バルブ９および１１を閉じて、三方
バルブ４を希釈標準ガス容器１と採取容器２が流通する
ように設定し、標準原液を注射器によりゴム栓５から採
取容器２内に注入しガス化させる。開閉バルブ１０を開
けて採取容器２内に希釈ガスを導入した後、開閉バルブ
９および１１を開けて希釈標準ガス容器１内に希釈ガス
を導入し、開閉バルブ９１０および１１を閉じる。Next, when a standard stock solution with a high vapor pressure is used, the temperature controller 16 is activated and the collection container 2 is heated by the heater 15. With the on-off valve 10 closed, on-off valves 9 and 11 are opened, and the residual gas in the diluted standard gas container 1 is sucked in by the suction pump 8, thereby creating a sufficiently negative pressure in the collection container 2. The on-off valves 9 and 11 are closed, the three-way valve 4 is set so that the diluted standard gas container 1 and the collection container 2 are in communication, and the standard stock solution is injected into the collection container 2 through the rubber stopper 5 with a syringe and gasified. After opening the on-off valve 10 to introduce the diluent gas into the sampling container 2, the on-off valves 9 and 11 are opened to introduce the diluent gas into the diluted standard gas container 1, and the on-off valves 910 and 11 are closed.
採取容器２内に注入された標準原ガスは希釈ガスと共に
希釈標準ガス容器１内に導入され希釈される。希釈標準
ガス量は希釈標準ガス容器１内に希釈ガスを導入する前
後の積算流Ｉ計３の目盛を読みとり算出する。この希釈
標準ガスをガスクロマトグラフ分析に用いる場合、希釈
標準ガス容器１のゴム栓６から注射器を用いて採取し、
ガスクロマトグラフに導入する。The standard source gas injected into the collection container 2 is introduced into the diluted standard gas container 1 together with the diluent gas and is diluted. The dilution standard gas amount is calculated by reading the scale of the integrated flow meter 3 before and after introducing the dilution gas into the dilution standard gas container 1. When using this diluted standard gas for gas chromatography analysis, collect it from the rubber stopper 6 of the diluted standard gas container 1 using a syringe,
Introduce into gas chromatograph.
以上詳述したように、本発明の標準ガス希釈装置を用い
ると、採取容器を加温することにより、吸着性物質の吸
着を抑えることができ、正確な希釈量を知ることができ
、しかも密閉された状態で希釈ガスを導入することがで
きるため、作業場雰囲気による汚染がなく、分析を精度
良く行えると共に、吸引ポンプを備えているなめ、ガス
の流路や容器の清浄化を容易に行なうことできる。As detailed above, by using the standard gas diluter of the present invention, it is possible to suppress the adsorption of adsorbent substances by heating the collection container, to know the exact amount of dilution, and to keep the container tightly closed. Since the diluent gas can be introduced in a state where the gas is in the same state, there is no contamination from the workplace atmosphere and analysis can be carried out with high precision.In addition, since it is equipped with a suction pump, it is easy to clean the gas flow path and container. can.
第１図は本発明の一実施例を示す構成図、第２図は従来
例を示す構成図である。
１・・・希釈標準ガス容器 ２・・・採取容器３・・・
積算流量計 ４・・・三方バルブ５．６・・・ゴ
ム栓 ７・・・導入管８・・・吸引ポンプ
９、１０．１１・・・開閉バルブ
１２・・・圧力調整器 １３・・・流量計１４・
・・希釈ガスボンベ １５・・・ヒーター１６・・・
温度コントローラー
１７・・・ジヨイント
２２・・・セプタム
２４・・・試薬びん
２６・・・ガラス管
２１・・・真空採気びん
２３・・・ガス採取口
２５・・・希釈ガス給気管FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional example. 1... Dilution standard gas container 2... Collection container 3...
Integrating flow meter 4...Three-way valve 5.6...Rubber plug 7...Introduction pipe 8...Suction pump 9, 10.11...Opening/closing valve 12...Pressure regulator 13... Flowmeter 14・
... Dilution gas cylinder 15 ... Heater 16 ...
Temperature controller 17... Joint 22... Septum 24... Reagent bottle 26... Glass tube 21... Vacuum sampling bottle 23... Gas sampling port 25... Dilution gas supply pipe
Claims (1)
る希釈標準ガス容器と、 着脱可能なゴム栓を備えた密閉性硬質材からなる採取容
器と、 該採取容器を加温するヒーターとを有し、 前記希釈標準ガス容器と該採取容器とを三方バルブを介
して接続するとともに、該三方バルブに採取容器内と希
釈標準ガス容器内を吸引する吸引ポンプを接続し、さら
に前記採取容器に希釈ガスを導入する配管系に希釈ガス
量を連続計量する積算流量計を介装したことを特徴とす
る標準ガス希釈装置。(1) A dilution standard gas container made of an airtight film with a removable rubber stopper, a collection container made of an airtight hard material with a removable rubber stopper, and a heater for heating the collection container. The diluted standard gas container and the collection container are connected via a three-way valve, and a suction pump for suctioning the inside of the collection container and the diluted standard gas container is connected to the three-way valve, and the collection container is further connected to the collection container. A standard gas diluter characterized in that a piping system for introducing diluent gas is equipped with an integrating flow meter that continuously measures the amount of diluent gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33314189A JPH03194438A (en) | 1989-12-22 | 1989-12-22 | Standard gas dilution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33314189A JPH03194438A (en) | 1989-12-22 | 1989-12-22 | Standard gas dilution device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03194438A true JPH03194438A (en) | 1991-08-26 |
Family
ID=18262752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33314189A Pending JPH03194438A (en) | 1989-12-22 | 1989-12-22 | Standard gas dilution device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03194438A (en) |
-
1989
- 1989-12-22 JP JP33314189A patent/JPH03194438A/en active Pending
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