JPH0330103B2 - - Google Patents
Info
- Publication number
- JPH0330103B2 JPH0330103B2 JP59068858A JP6885884A JPH0330103B2 JP H0330103 B2 JPH0330103 B2 JP H0330103B2 JP 59068858 A JP59068858 A JP 59068858A JP 6885884 A JP6885884 A JP 6885884A JP H0330103 B2 JPH0330103 B2 JP H0330103B2
- Authority
- JP
- Japan
- Prior art keywords
- hydrogen flame
- hydrogen
- cover
- gas
- organic components
- 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
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 35
- 239000001257 hydrogen Substances 0.000 claims description 31
- 229910052739 hydrogen Inorganic materials 0.000 claims description 31
- 239000007789 gas Substances 0.000 claims description 17
- 238000005259 measurement Methods 0.000 claims description 12
- 230000005684 electric field Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 229910001882 dioxygen Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/626—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using heat to ionise a gas
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Description
【発明の詳細な説明】
この発明は、有機成分を含む測定ガスを電場中
の水素炎によつてイオン化し、このイオン化によ
つて発生したイオン電流を測定することにより、
測定ガス中の有機成分を測定するようにした水素
炎イオン化検出器に関する。DETAILED DESCRIPTION OF THE INVENTION This invention ionizes a measurement gas containing organic components using a hydrogen flame in an electric field, and measures the ionic current generated by this ionization.
The present invention relates to a hydrogen flame ionization detector that measures organic components in a measurement gas.
従来、上述したような水素炎イオン化検出器
は、水素炎が風によつてゆらぐとイオン電流値が
変化し、また、外部の電気ノイズの影響を受ける
とイオン電流値が変化するため、水素炎の周囲
を、金属板を折り曲げることにより製作され燃焼
ガス排気孔が形成された有底円筒状カバーで囲ん
でいる。しかしながら、水素炎をこのような通気
性のないカバーで囲むと、カバー内が酸素欠乏状
態になつて水素炎が消えてしまうため、このカバ
ー内に助燃用の空気あるいは酸素ガスを供給しな
ければならず、この結果、構造が複雑かつ装置全
体が大型になるという問題点がある。 Conventionally, hydrogen flame ionization detectors such as those described above change the ion current value when the hydrogen flame fluctuates due to the wind, and also change when the ion current value is affected by external electrical noise. It is surrounded by a bottomed cylindrical cover that is made by bending a metal plate and has a combustion gas exhaust hole. However, if a hydrogen flame is surrounded by such an impermeable cover, the inside of the cover will become deficient in oxygen and the hydrogen flame will disappear, so air or oxygen gas must be supplied into the cover for auxiliary combustion. However, as a result, there are problems in that the structure is complicated and the entire device becomes large.
この発明は、前述の問題点に着目してなされた
もので、小型でかつ構造簡単な水素炎イオン化検
出器を提供することを目的としている。 The present invention was made in view of the above-mentioned problems, and an object of the present invention is to provide a hydrogen flame ionization detector that is small in size and has a simple structure.
このような目的は、有機成分を含む測定ガスを
電場中の水素炎によつてイオン化し、このイオン
化によつて発生したイオン電流を測定することに
より、測定ガス中の有機成分を測定するようにし
た水素炎イオン化検出器において、前記水素炎の
周囲を導電性を有する多孔性カバーで囲むことに
より、達成することができる。 This purpose is to ionize the sample gas containing organic components using a hydrogen flame in an electric field and measure the ion current generated by this ionization, thereby measuring the organic components in the sample gas. This can be achieved by surrounding the hydrogen flame with a conductive porous cover in the hydrogen flame ionization detector.
以下、この発明の一実施例を図面に基づいて説
明する。 Hereinafter, one embodiment of the present invention will be described based on the drawings.
図面において、１は円柱状の基台であり、この
基台１内には通路２が形成されている。３は図示
していない水素ボンベに接続された水素管であ
り、この水素管３は基台１にねじ込まれることに
より前記通路２に接続されている。４は測定ガス
管であり、この測定ガス管４は図示していない分
離カラムに接続され、この分離カラムから微量の
有機成分が含まれたキヤリア空気（21％の酸素を
含む）が送られてくる。測定ガス管４は前記基台
１にねじ込まれ、これにより、測定ガス管４は通
路２に接続される。この結果、水素管３および測
定ガス管４を通じて供給された水素ガスおよび測
定ガスは通路２内で合流する。５は基台１の上面
に取り付けられた金属製のノズルであり、このノ
ズル５は通路２に接続され、先端から噴出したガ
スは燃焼することにより水素炎６となる。また、
基台１の上面にはコレクタ電極７が取り付けら
れ、このコレクタ電極７の先端部は水素炎６の直
上に位置している。８は印加電源であり、この印
加電源８はリード線９を通じて対電極となるノズ
ル５とコレクタ電極７の双方に接続されている。
これにより、ノズル５とコレクタ電極７との間の
水素炎６には電場が与えられる。なお、１０はリ
ード線９の途中に設けられたイオン電流測定用の
メータである。１１は有底円筒状のカバーであ
り、このカバー１１の開口部が前記基台１の上端
部に嵌合固定されることにより、カバー１１は水
素炎６の周囲を囲むよう配置されている。このカ
バー１１は、例えば焼結金属からなり、この結
果、カバー１１は導電性を有しかつ多孔性であ
る。このカバー１１は、目の細かい金網を複数層
重ねたものあるいは内面に蒸着等により金属導電
膜が付着された多孔性セラミツクスでもよい。 In the drawings, reference numeral 1 denotes a cylindrical base, within which a passage 2 is formed. Reference numeral 3 denotes a hydrogen pipe connected to a hydrogen cylinder (not shown), and this hydrogen pipe 3 is connected to the passage 2 by being screwed into the base 1. Reference numeral 4 denotes a measuring gas pipe, and this measuring gas pipe 4 is connected to a separation column (not shown), from which carrier air (containing 21% oxygen) containing trace amounts of organic components is sent. come. The measuring gas pipe 4 is screwed into the base 1, so that the measuring gas pipe 4 is connected to the passage 2. As a result, the hydrogen gas and the measurement gas supplied through the hydrogen pipe 3 and the measurement gas pipe 4 merge in the passage 2. Reference numeral 5 denotes a metal nozzle attached to the upper surface of the base 1. This nozzle 5 is connected to the passage 2, and the gas ejected from the tip becomes a hydrogen flame 6 by combustion. Also,
A collector electrode 7 is attached to the upper surface of the base 1, and the tip of the collector electrode 7 is located directly above the hydrogen flame 6. Reference numeral 8 denotes an applied power source, and this applied power source 8 is connected through a lead wire 9 to both the nozzle 5 and the collector electrode 7, which serve as a counter electrode.
As a result, an electric field is applied to the hydrogen flame 6 between the nozzle 5 and the collector electrode 7. Note that 10 is a meter provided in the middle of the lead wire 9 for measuring ion current. Reference numeral 11 denotes a cylindrical cover with a bottom, and the opening of the cover 11 is fitted and fixed to the upper end of the base 1, so that the cover 11 is arranged to surround the hydrogen flame 6. This cover 11 is made of, for example, sintered metal, and as a result, the cover 11 is electrically conductive and porous. The cover 11 may be made of a plurality of layers of fine wire mesh or porous ceramics with a metal conductive film adhered to the inner surface by vapor deposition or the like.
次に、この発明の一実施例の作用について説明
する。 Next, the operation of one embodiment of the present invention will be explained.
今、水素管３および測定ガス管４から供給され
た水素ガスおよび測定ガスが通路２内で合流した
後、ノズル５の先端から噴出して燃焼し水素炎６
となつている。このとき、対電極であるノズル５
とコレクタ電極７との間には印加電源８によつて
電場が与えられている。このため、水素炎６によ
つて測定ガス中の有機成分がイオン化して帯電し
た原子あるいは分子と自由電子とが生成し、これ
により、ノズル５とコレクタ電極７との間にイオ
ン電流が流れる。このイオン電流の大きさはメー
タ１０によつて測定され、有機成分、例えば炭化
水素類の量が測定される。この測定中において
は、水素ガスは測定ガス中の酸素ガスを消費する
が、水素管３から供給される水素ガスを全量燃焼
させるにはキヤリア空気中の酸素ガス量では不足
である。このため、水素炎６が消えるとも考えら
れるが、この発明においては、カバー１１が多孔
性であるため、助燃用空気が供給されなくても、
このカバー１１を透過して外部の空気（酸素ガ
ス）がカバー１１内に流れ込み酸素を補給する。
一方、水素ガスの燃焼によつて発生した燃焼ガス
はカバー１１を透過して外部に排出される。これ
により、水素炎６が消えるようなことはない。し
かも、このカバー１１の孔の径は極めて小さいの
で、風を通すことができず、この結果、水素炎６
がゆらいで測定結果に誤差が発生するようなこと
はない。また、カバー１１が導電性を有してお
り、しかも、このカバー１１はアースあるいは一
方の電極に接続されているので、外部ノイズがイ
オン電流に影響を与えるようなことはない。 Now, after the hydrogen gas and measurement gas supplied from the hydrogen pipe 3 and the measurement gas pipe 4 meet in the passage 2, they are ejected from the tip of the nozzle 5 and burned, resulting in a hydrogen flame 6.
It is becoming. At this time, the nozzle 5 which is the counter electrode
An electric field is applied between the collector electrode 7 and the collector electrode 7 by an applied power source 8. Therefore, the organic components in the measurement gas are ionized by the hydrogen flame 6 to generate charged atoms or molecules and free electrons, thereby causing an ionic current to flow between the nozzle 5 and the collector electrode 7. The magnitude of this ionic current is measured by a meter 10, and the amount of organic components, such as hydrocarbons, is measured. During this measurement, the hydrogen gas consumes the oxygen gas in the measurement gas, but the amount of oxygen gas in the carrier air is insufficient to burn all the hydrogen gas supplied from the hydrogen pipe 3. For this reason, it is thought that the hydrogen flame 6 disappears, but in this invention, since the cover 11 is porous, even if auxiliary combustion air is not supplied,
External air (oxygen gas) passes through this cover 11 and flows into the cover 11 to replenish oxygen.
On the other hand, combustion gas generated by combustion of hydrogen gas passes through the cover 11 and is discharged to the outside. As a result, the hydrogen flame 6 will not go out. Moreover, since the diameter of the hole in this cover 11 is extremely small, wind cannot pass through, and as a result, the hydrogen flame 6
Fluctuations will not cause errors in measurement results. Further, since the cover 11 is conductive and is connected to the ground or one of the electrodes, external noise does not affect the ion current.
以上説明したように、この発明によれば、水素
炎イオン化検出器を小型でかつ構造簡単にするこ
とができる。 As explained above, according to the present invention, a hydrogen flame ionization detector can be made small and simple in structure.
図面はこの発明の一実施例を示す一部破断正面
図である。
５……ノズル、６……水素炎、７……コレクタ
電極、８……印加電源、１１……カバー。
The drawing is a partially cutaway front view showing an embodiment of the present invention. 5... Nozzle, 6... Hydrogen flame, 7... Collector electrode, 8... Applied power source, 11... Cover.
Claims (1)
よつてイオン化し、このイオン化によつて発生し
たイオン電流を測定することにより、測定ガス中
の有機成分を測定するようにした水素炎イオン化
検出器において、前記水素炎の周囲を導電性を有
する多孔性カバーで囲んだことを特徴とする水素
炎イオン化検出器。1 Hydrogen flame ionization detection that measures organic components in the measurement gas by ionizing the measurement gas containing organic components with a hydrogen flame in an electric field and measuring the ion current generated by this ionization. 1. A hydrogen flame ionization detector, characterized in that the hydrogen flame is surrounded by a porous cover having conductivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59068858A JPS60211356A (en) | 1984-04-06 | 1984-04-06 | Hydrogen flame ionization detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59068858A JPS60211356A (en) | 1984-04-06 | 1984-04-06 | Hydrogen flame ionization detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60211356A JPS60211356A (en) | 1985-10-23 |
| JPH0330103B2 true JPH0330103B2 (en) | 1991-04-26 |
Family
ID=13385785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59068858A Granted JPS60211356A (en) | 1984-04-06 | 1984-04-06 | Hydrogen flame ionization detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60211356A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101418135B1 (en) * | 2008-03-20 | 2014-07-09 | 사빅 이노베이티브 플라스틱스 아이피 비.브이. | Polycarbonate compositions, methods of manufacture thereof and articles comprising the same |
-
1984
- 1984-04-06 JP JP59068858A patent/JPS60211356A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101418135B1 (en) * | 2008-03-20 | 2014-07-09 | 사빅 이노베이티브 플라스틱스 아이피 비.브이. | Polycarbonate compositions, methods of manufacture thereof and articles comprising the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60211356A (en) | 1985-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5684300A (en) | Corona discharge ionization source | |
| US7832254B2 (en) | Particulate sensor and method for operating a particulate sensor | |
| US9337626B2 (en) | Corona discharge assembly, ion mobility spectrometer, computer program and computer readable storage medium | |
| US5105123A (en) | Hollow electrode plasma excitation source | |
| JPH0618480A (en) | Method and device for detecting nox | |
| GB2090050A (en) | Hydrogen sensor | |
| US4266196A (en) | Gas detecting means utilizing electric discharge | |
| US6457347B1 (en) | Glow discharge detector | |
| US3176135A (en) | Apparatus for detecting and analysing low gaseous concentrations | |
| US3087113A (en) | Detector for gas chromatography | |
| JPS61144564A (en) | Ionization detector for gas chromatography and method of analyzing effusion from gas chromatographic column | |
| US5576626A (en) | Compact and low fuel consumption flame ionization detector with flame tip on diffuser | |
| CA2001237A1 (en) | Hollow electrode plasma excitation source | |
| CN106066321A (en) | Element detection device and detection method based on nano-array ionization discharge effect | |
| US3439261A (en) | Combustible gas detector using a corona discharge | |
| US6842008B2 (en) | Gas detector with modular detection and discharge source calibration | |
| CN116699247A (en) | A steady-state X-ray radiation-induced conductivity tester for dielectric materials | |
| JPH0330103B2 (en) | ||
| Crompton et al. | Precision measurements of ionization coefficients in uniform static fields | |
| US3110809A (en) | Apparatus for detecting and analyzing low gaseous concentrations | |
| US8188442B2 (en) | Non-radioactive electron capture detector for GC | |
| US2874304A (en) | Ionization chamber | |
| US6606899B1 (en) | Total impurity monitor for gases | |
| US6736000B2 (en) | Stable glow discharge detector | |
| JP2002014171A (en) | HIGH-PERFORMANCE He-3 COUNTER FOR NEUTRON |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |