JPS6352058A - Detection of concentration of organic gas - Google Patents
Detection of concentration of organic gasInfo
- Publication number
- JPS6352058A JPS6352058A JP61196930A JP19693086A JPS6352058A JP S6352058 A JPS6352058 A JP S6352058A JP 61196930 A JP61196930 A JP 61196930A JP 19693086 A JP19693086 A JP 19693086A JP S6352058 A JPS6352058 A JP S6352058A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- oxygen sensor
- oxygen
- organic gas
- catalyst
- 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
- 238000001514 detection method Methods 0.000 title claims description 12
- 239000007789 gas Substances 0.000 claims abstract description 31
- 239000001301 oxygen Substances 0.000 claims abstract description 30
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 30
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 9
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 8
- 230000007613 environmental effect Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052697 platinum Inorganic materials 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 abstract 1
- 229910001928 zirconium oxide Inorganic materials 0.000 abstract 1
- 235000013305 food Nutrition 0.000 description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は有機ガス濃度の測定に関するもので、食品貯蔵
、または化学工業等のあらゆる産業分野における有機ガ
ス取り扱い分野に属するｂのである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to the measurement of organic gas concentration, and belongs to the field of organic gas handling in all industrial fields such as food storage and chemical industry.
（従来の技術）
従来有機ガス濃度測定方法としては、通常ＦＩＤガスク
ロマトグラフｈ法方法られており、かつ使用されている
が、この方法は水素炎の中に有機ガスが入るときに、水
素炎の電気伝導度が増大する特質があることを利用し、
この水素炎の電気伝導１．１の変化により有機ガスの濃
度を検出するものである。しかしながらこの検出方法に
は、窒素ガスおよび水素ガスが必要であり、更に検出の
実施には変換器および減真器等の使用に伴う複雑な電気
回路が必要である。従って筒中に持ち運びができると共
に、ガスの濃度測定が簡便な機器および方法は現在のと
ころ１聞案されていない。(Prior art) As a conventional method for measuring the concentration of organic gas, the FID gas chromatography method is usually used. Taking advantage of the property of increasing electrical conductivity,
The concentration of organic gas is detected by the change in electrical conductivity 1.1 of this hydrogen flame. However, this detection method requires nitrogen gas and hydrogen gas, and further requires complex electrical circuitry associated with the use of converters, vacuum reducers, etc. to carry out the detection. Therefore, no equipment or method has been proposed so far that is portable in a cylinder and that allows easy measurement of gas concentration.
（発明により解決すべき問題点〉
従来安価で持ら運びが便利なｔ］別ガス測定機器および
方法がなかったために、例えば食品貯蔵に際しては確実
な貯蔵管理ができない事により、１１品質のものを得る
ことが困難であり、信頼度を１ａめろこともむつかしか
った。そこで高品質管理をするためには、高価で複雑な
従来知られている検出器と、持ち運びに不便なボンベ類
を必要とするなどの問題点があった。(Problems to be solved by the invention) Due to the lack of separate gas measuring equipment and methods that were conventionally inexpensive and convenient to carry, for example, when storing food, it was not possible to ensure storage management. Therefore, in order to achieve high quality control, expensive and complicated detectors and cylinders that were inconvenient to carry were required. There were problems such as.
（問題点を解決する為の手段）
しかるに本発明は、従来の欠点である高価で複雑な測定
器と持ち運びにくいボンベガスを必要とするがスクロマ
トグラフ方法に代る安価で１）も運び簡便な有機ガス検
出方法を開発した。(Means for Solving the Problems) However, the present invention eliminates the disadvantages of the conventional method, which is that it requires expensive and complicated measuring instruments and gas cylinders that are difficult to carry. A gas detection method was developed.
即ち本発明の測定方法は、測定しようとするガスの流動
路に設置した触媒の前掛に酸素センサーを人々設置し、
前記酸系センサーの検出素子の環境温度を常温から７０
０℃、望ましくは２００℃〜３００℃に設定し、前記前
段のｌ’＋？索センサーの出力と、後段の酸素センサー
の出力を測定し、その出力の差から有機ガス濃度を測定
する方法である。この現やは酸素センサーの表面に電極
として使用されている白金が触媒として作用し、機部の
ＯＲガスを酸化することにより、レファレンス側に移動
する酸素分子が減少する。このために出力が減少する。That is, the measurement method of the present invention involves installing an oxygen sensor on the apron of a catalyst installed in the flow path of the gas to be measured;
The ambient temperature of the detection element of the acid-based sensor is set to 70°C from room temperature.
0°C, preferably 200°C to 300°C, and l'+? This method measures the output of the oxygen sensor and the output of the downstream oxygen sensor, and measures the organic gas concentration from the difference between the outputs. In this case, the platinum used as an electrode on the surface of the oxygen sensor acts as a catalyst and oxidizes the OR gas in the device, thereby reducing the number of oxygen molecules moving to the reference side. This reduces the output.
この現℃をとらえて、後段の酸素センサーで、触媒通過
により残存有機ガスを完全に除去したあとの配糸濃度出
力を検出し、前段の酸素センサー出力との差で有機ガス
濃度を検出するものである。By capturing this current temperature, the downstream oxygen sensor detects the yarn distribution concentration output after the residual organic gas has been completely removed by passing through the catalyst, and the organic gas concentration is detected by the difference between the output and the previous stage oxygen sensor output. It is.
本発明に使用する酸素センサーとしては、産業用として
大量生産されている安価°Ｃ信頼性の＾い酸化ジルコニ
ア、または酸化チタン等の検出器ｆを用いる。As the oxygen sensor used in the present invention, a detector f made of zirconia oxide or titanium oxide, which is mass-produced for industrial use and is inexpensive and reliable, is used.
（発明の作用）
酸化ジルコニアあるいは酸化ブタン製の検出素子は、原
理的に正確で安定性が高く、粘度が良い。(Operation of the invention) A detection element made of zirconia oxide or butane oxide is accurate in principle, highly stable, and has good viscosity.
本発明の測定方法により有償ガスを測定した場合には、
微Ｂ濃度を検出することが可能なために、青果物等の食
品貯蔵に対して、特に微早のエチレンガスの濃度：１測
が可能となる。When measuring paid gas using the measuring method of the present invention,
Since it is possible to detect the minute B concentration, it becomes possible to measure the very early concentration of ethylene gas, especially when storing foods such as fruits and vegetables.
（実施例１）
酸素センサーとして酸化ジルコニア製Ｍｆｆｉセンサー
を用い、センサー内部にセラミックヒータ−を内蔵され
ているものを使用した。この酸素センサー２１［！ｉｔ
の間にヒーター伺触ｔＲ層をシリーズに配列し、エリ定
ガスとして■エチレン５ｐｐｍ／エアーバランス、■エ
チレン５註０
％バランスをそれぞれ０．５１／分つづ流量計を通じ測
定回路に流した。前記酸素センサーのヒーターへ１３．
５ボルトの直流を通じたところ、測定０１の検出ゐ子の
環境温度は２５０℃であった。(Example 1) A Mffi sensor made of zirconia oxide was used as an oxygen sensor, and the sensor had a built-in ceramic heater. This oxygen sensor 21 [! it
During heating, the tR layers were arranged in a series, and constant gases (1) ethylene 5 ppm/air balance, and (2) ethylene 5 0% balance were flowed through the measuring circuit at a rate of 0.51/min each through a flowmeter. 13. To the heater of the oxygen sensor.
When 5 volts of direct current was applied, the ambient temperature of the detection element in measurement 01 was 250°C.
この時の酸素センυ−の出ツノは下記の通りであった。At this time, the output of oxygen υ− was as follows.
（発明の効果）
即も本発明は、触媒の前後二筒湧で酸素センサーの出力
を測定し、その出力差で有機ガス濃度を測定するので、
簡単な機器および方法により、微量の有機ガス温度でも
正確に測定し得る効果がある。また本発明の有機ガス測
定方法に用いる機器は、小型で安価で簡便なため、小型
橢から大型機まで広範囲に応用でき、経済的に優れてい
る。更に食品貯蔵等に際し、安価に信頼麿の高い管理が
可能となり、生鮮食品の保存について、品質管理上画期
的役割を！ｌｆ２″ｊことができる。(Effects of the Invention) The present invention measures the output of the oxygen sensor in two cylinders before and after the catalyst, and measures the organic gas concentration based on the output difference.
With simple equipment and methods, even trace amounts of organic gas temperature can be accurately measured. Furthermore, the equipment used in the organic gas measuring method of the present invention is small, inexpensive, and simple, so it can be widely applied from small scales to large machines, and is economically superior. Furthermore, when storing food, etc., it becomes possible to manage it at low cost and with high reliability, and it plays an epoch-making role in terms of quality control for preserving fresh food! lf2″j can be done.
図は本発明の方法におけるｎ冨の配置を示づブロック図
である。
１・・・前段の酸素センサー
２・・・触媒層 ３・・・後段の酸素センサ
ー特；１出願人 カルト株式会社
同 日研フード株式会社The figure is a block diagram showing the arrangement of n-values in the method of the present invention. 1... Front-stage oxygen sensor 2... Catalyst layer 3... Back-stage oxygen sensor Special: 1 Applicant: Cult Co., Ltd. Nikken Food Co., Ltd.
Claims (1)
で酸素センサーの出力を測定し、前記前後の酸素センサ
ーの出力差により有機ガス濃度を検出することを特徴と
した有機ガス濃度検出方法 ２ 酸素センサーは検知素子として酸化ジルコニアまた
は酸化チタンを使用した特許請求の範囲第１項記載の有
機ガス濃度検出方法 ３ 酸素センサーの検出素子の環境温度は、常温から７
００℃に設定するものとした特許請求の範囲第１項記載
の有機ガス濃度検出方法[Claims] 1. The method is characterized in that the output of an oxygen sensor is measured before and after a catalyst provided in a flow path of the gas to be measured, and the organic gas concentration is detected based on the difference in the output of the oxygen sensors before and after the catalyst. Organic gas concentration detection method 2 Organic gas concentration detection method 3 according to claim 1, in which the oxygen sensor uses zirconia oxide or titanium oxide as a detection element The environmental temperature of the detection element of the oxygen sensor is from room temperature to 7
The organic gas concentration detection method according to claim 1, wherein the organic gas concentration is set at 00°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61196930A JPS6352058A (en) | 1986-08-22 | 1986-08-22 | Detection of concentration of organic gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61196930A JPS6352058A (en) | 1986-08-22 | 1986-08-22 | Detection of concentration of organic gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6352058A true JPS6352058A (en) | 1988-03-05 |
Family
ID=16366025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61196930A Pending JPS6352058A (en) | 1986-08-22 | 1986-08-22 | Detection of concentration of organic gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6352058A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002512679A (en) * | 1996-10-22 | 2002-04-23 | オルビスフェーア ラボラトリーズ ヌーシャテル ソシエテ アノニム | Flammability monitor and monitoring method |
| JP2007093409A (en) * | 2005-09-29 | 2007-04-12 | Shimadzu Corp | Tvoc meter |
| JP2007093295A (en) * | 2005-09-27 | 2007-04-12 | Toray Eng Co Ltd | Oxygen concentration measuring apparatus |
-
1986
- 1986-08-22 JP JP61196930A patent/JPS6352058A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002512679A (en) * | 1996-10-22 | 2002-04-23 | オルビスフェーア ラボラトリーズ ヌーシャテル ソシエテ アノニム | Flammability monitor and monitoring method |
| JP2007093295A (en) * | 2005-09-27 | 2007-04-12 | Toray Eng Co Ltd | Oxygen concentration measuring apparatus |
| JP2007093409A (en) * | 2005-09-29 | 2007-04-12 | Shimadzu Corp | Tvoc meter |
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