JPS63148149A - Method for measuring oxygen concentration - Google Patents
Method for measuring oxygen concentrationInfo
- Publication number
- JPS63148149A JPS63148149A JP29552786A JP29552786A JPS63148149A JP S63148149 A JPS63148149 A JP S63148149A JP 29552786 A JP29552786 A JP 29552786A JP 29552786 A JP29552786 A JP 29552786A JP S63148149 A JPS63148149 A JP S63148149A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- oxygen
- vessel
- concn
- exothermic
- 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 239000001301 oxygen Substances 0.000 title claims abstract description 15
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 12
- 239000007789 gas Substances 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 230000002427 irreversible effect Effects 0.000 claims description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 4
- 229910001882 dioxygen Inorganic materials 0.000 claims description 4
- 239000012476 oxidizable substance Substances 0.000 claims 1
- 239000003708 ampul Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 5
- 239000000843 powder Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000011521 glass Substances 0.000 abstract description 3
- 239000011780 sodium chloride Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000000975 dye Substances 0.000 description 10
- 238000005259 measurement Methods 0.000 description 6
- 238000002845 discoloration Methods 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 241001465754 Metazoa Species 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 235000002639 sodium chloride Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical class C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical group N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- MQTOSJVFKKJCRP-BICOPXKESA-N azithromycin Chemical group O([C@@H]1[C@@H](C)C(=O)O[C@@H]([C@@]([C@H](O)[C@@H](C)N(C)C[C@H](C)C[C@@](C)(O)[C@H](O[C@H]2[C@@H]([C@H](C[C@@H](C)O2)N(C)C)O)[C@H]1C)(C)O)CC)[C@H]1C[C@@](C)(OC)[C@@H](O)[C@H](C)O1 MQTOSJVFKKJCRP-BICOPXKESA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010291 electrical method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- FWQHNLCNFPYBCA-UHFFFAOYSA-N fluoran Chemical class C12=CC=CC=C2OC2=CC=CC=C2C11OC(=O)C2=CC=CC=C21 FWQHNLCNFPYBCA-UHFFFAOYSA-N 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Description
【発明の詳細な説明】
〔概要〕
電気的な方法によらず、簡便に酸素ガス濃度を測定する
方法として、酸素ガスと発熱反応を起こす材料を、不可
逆性感温色素を外側に貼着した容器内に保持しておき、
必要に応じて容器を開けて容器内に酸素濃度を測定する
ガスを導入して酸化反応を行わしめ、感温色素の変色か
ら酸素濃度を検知する方法。[Detailed Description of the Invention] [Summary] As a method for easily measuring oxygen gas concentration without using electrical methods, a container is provided with a material that causes an exothermic reaction with oxygen gas and an irreversible temperature-sensitive dye pasted on the outside. keep it inside,
A method in which the container is opened as necessary and the gas used to measure the oxygen concentration is introduced into the container to cause an oxidation reaction, and the oxygen concentration is detected from the discoloration of the temperature-sensitive dye.
本発明は簡便に酸素濃度を測定する方法に関する。 The present invention relates to a method for easily measuring oxygen concentration.
酸素は動植物の生存に欠かせない元素であって、微生物
の増殖や動植物の飼育などの分野において不可欠のもの
であり、環境条件をコントロールする必要性から酸素ガ
ス（０□）濃度を測定する場合が多く、簡便な測定法が
要望されている。Oxygen is an essential element for the survival of animals and plants, and is essential in fields such as the growth of microorganisms and the breeding of animals and plants.When measuring oxygen gas (0□) concentration due to the need to control environmental conditions. There is a need for a simple measurement method.
〔従来の技術］
雰囲気中の０２ガス濃度を測定する方法としてクラーク
形酸素電極がある。[Prior Art] A Clark type oxygen electrode is used as a method for measuring the concentration of O2 gas in the atmosphere.
この方法は電圧が印加されている白金（Ｐ ｔ）電極に
０２ガスが触れると酸化還元反応が生じ、酸素が解離す
ることにより生ずる電流量から０２ガスＰｆ度を測定す
る方法である。In this method, when O2 gas comes into contact with a platinum (Pt) electrode to which a voltage is applied, an oxidation-reduction reaction occurs, and the degree of Pf of O2 gas is measured from the amount of current generated as oxygen dissociates.
この方法によれば、高い精度で０□ガス濃度を測定する
ことができる。According to this method, the 0□ gas concentration can be measured with high accuracy.
然し、この方法は電極内部の溶液が平衡状態になり、出
力が安定するまでに時間を要し、すなわち測定に長時間
を必要とし、また電源がない場所では測定できないと云
う問題がある。However, this method has the problem that it takes time for the solution inside the electrode to reach an equilibrium state and for the output to become stable, that is, it requires a long time for measurement, and that measurement cannot be performed in a place without a power source.
一方、精度はそれほど高くなくとも雰囲気中の０□ガス
濃度を短時間で、また簡便に測定したいと云う要求があ
る。On the other hand, there is a demand for measuring the 0□ gas concentration in the atmosphere in a short time and easily, even if the accuracy is not so high.
か−る要求は宇宙分野などにおいて特に顕著であって、
この実現が要望されていた。Such requirements are particularly prominent in the space field, etc.
This realization was requested.
以上記したように０□ガス濃度を精度よく測定する方法
はあるもの一１測定に時間を要し、また測定系も簡便で
はない。As described above, although there are methods for measuring the 0□ gas concentration with high accuracy, the measurement takes time and the measurement system is not simple.
そこで、簡便な方法で迅速に測定可能な方法を開発する
ことが課題である。Therefore, the challenge is to develop a method that is simple and capable of rapid measurement.
上記の問題は０□ガスの存在により発熱反応を起こす被
酸化物と触媒との混合物を不可逆性感温色素を外側に貼
着した容器内に０□を遮断して保持しておき、必要に応
じて遮断状態を解き、該容器内にｏｚ？Ｍ度を測定する
ガスを導入して酸化反応を行わしめ、発熱温度に応じて
感温色素を変色せしめ、前記被酸化物の発熱温度より検
知する０□濃度の測定方法により解決することができる
。The above problem can be solved by keeping the mixture of the oxidized substance and catalyst, which undergoes an exothermic reaction in the presence of 0□ gas, in a container with an irreversible temperature-sensitive dye pasted on the outside while blocking 0□. oz. This can be solved by a method of measuring the 0□ concentration, which involves introducing a gas for measuring the M degree, causing an oxidation reaction, causing the temperature-sensitive dye to change color according to the exothermic temperature, and detecting the exothermic temperature of the oxidized substance. .
本発明は０□ガスにより酸化反応が急速に起こって発熱
する鉄（Ｆｅ）の粉末のような被酸化物と、か＼る酸化
反応において、触媒として働く材料例えば食塩（ＮａＣ
ｌ ）水とを０２を透過しない容器例えばガラス製アン
プルなどに封じ込めておき、一方容器の表面には感温色
素を塗布した感温ラベルを貼付しておくものである。The present invention utilizes a material to be oxidized, such as iron (Fe) powder, which rapidly undergoes an oxidation reaction with gas and generates heat, and a material that acts as a catalyst in the oxidation reaction, such as common salt (NaC).
l) Water is sealed in a container such as a glass ampoule that does not allow 02 to pass through, and a temperature-sensitive label coated with a temperature-sensitive dye is affixed to the surface of the container.
そして、０□濃度を測定したい雰囲気中で容器を開封し
て容器内に０２を含むガスを導入し、発熱反応を起こさ
せるもので、この際の温度上昇値から０□の含を濃度を
検出するものである。Then, the container is opened in the atmosphere where the 0□ concentration is to be measured, and a gas containing 02 is introduced into the container to cause an exothermic reaction.The concentration of 0□ is detected from the temperature rise value at this time. It is something to do.
なお、この場合は０□濃度と不可逆性感温色素を用いて
測定した温度上昇値との関係を予め求めておくことが当
然必要である。In this case, it is of course necessary to determine in advance the relationship between the 0□ density and the temperature rise value measured using the irreversible temperature-sensitive dye.
ここで、不可逆性感温色素を塗布した感温ラベルについ
て説明するとフルオラン化合物のように常温においては
有色な感熱色素にハロゲンを導入して置換することによ
り無色とした染料と、ビスフェノールへのようなフェノ
ール類とをポリビニルアルコール（ＰＶ＾）のようなバ
インダ中に分散した状態で基紙上に塗布して形成されて
いる。Here, we will explain temperature-sensitive labels coated with irreversible temperature-sensitive dyes. Dyes such as fluoran compounds, which are colored at room temperature, are made colorless by introducing halogens to replace them, and phenols, such as bisphenols. It is formed by coating a base paper on a base paper while dispersing the same in a binder such as polyvinyl alcohol (PV^).
そして、この状態では無色であるが、加熱されると、そ
の部分が溶融して色素とフェノール類とがン昆ざりあっ
て発色するものであり。In this state, it is colorless, but when heated, that part melts and the pigment and phenols mix together, creating a color.
ここで感温色素と置換基との組み合わせから変色温度が
５０°Ｃ程度から１９０“Ｃまで約５℃置きの飛び飛び
の各温度について、±２°Ｃの変色精度で変色する多種
類の感熱ラヘルが市販されている。Here, due to the combination of temperature-sensitive dyes and substituents, we have produced many types of heat-sensitive lamellae that change color with a color change accuracy of ±2°C at each temperature from about 50°C to 190"C, with a discoloration accuracy of ±2°C. is commercially available.
本発明は酸素濃度と最高発熱温度との関係を予め求めて
おき、容器には変色温度を異にする複数の感温ラヘルを
塗布しておくもので、感温ラベルから最高発熱温度を知
り、これから酸素濃度を検出するものである。In the present invention, the relationship between the oxygen concentration and the maximum exothermic temperature is determined in advance, and a plurality of temperature-sensitive labels with different discoloration temperatures are applied to the container, and the maximum exothermic temperature is known from the temperature-sensitive label. This is used to detect the oxygen concentration.
内部を窒素（Ｎ２）ガスで置換してあり、容量が１０ｍ
１のガラスアンプルの中にＦｅ粉を５ｇと濃度１０％の
ＮａＣｌ水溶液１ ｍ（ｌを加え、０□を全く含まない
状態にしてアンプルを封管した。The inside is replaced with nitrogen (N2) gas, and the capacity is 10 m.
5 g of Fe powder and 1 m (l) of a 10% NaCl aqueous solution were added to a glass ampoule (No. 1), and the ampoule was sealed so that it did not contain any 0□.
そして、アンプルの外壁面に不可逆性感温色素が塗布さ
れている感温ラベル（変温域、５０〜１００℃、５℃お
き９８油技研製）を貼着した。Then, a temperature-sensitive label (variable temperature range, 50 to 100°C, manufactured by 98 Yugiken Co., Ltd.) coated with an irreversible temperature-sensitive dye was attached to the outer wall of the ampoule at every 5°C.
か＼るアンプルを０□濃度を測定する雰囲気中におき、
アンプルの頭部を切断して放置時間に対するＦｅの温度
上昇を感温ラベルと熱電対の両方を用いて測定したが、
両者の値は一致していた。Place the ampoule in the atmosphere where the concentration is to be measured,
The head of the ampoule was cut off and the temperature rise of Fe was measured with respect to the standing time using both a temperature-sensitive label and a thermocouple.
Both values were consistent.
第１図は放置時間に対する温度変化を示すもので、急速
に温度上昇して３０分経過後にピークに達し、その後徐
々に温度低下がおこる。FIG. 1 shows the temperature change with respect to the standing time. The temperature rises rapidly, reaches a peak after 30 minutes, and then gradually decreases.
一方、第２図はＦｅ粉とＮａＣＩ！水溶液からなる反応
系について、０□濃度が１０〜４０％の雰囲気中で測定
した０□濃度と発熱最高温度との関係である。On the other hand, Figure 2 shows Fe powder and NaCI! This is the relationship between the 0□ concentration and the maximum exothermic temperature measured in an atmosphere where the 0□ concentration is 10 to 40% for a reaction system consisting of an aqueous solution.
これから、最高温度が６７℃の本実施例の場合、０２濃
度は２７％であることが判る。From this, it can be seen that in the case of this example where the maximum temperature is 67° C., the 02 concentration is 27%.
本発明によれば測定用の電源や複雑な測定器を必要とせ
ず、任意の場所で簡便に０２濃度を測定することができ
る。According to the present invention, the 02 concentration can be easily measured at any location without requiring a power source for measurement or a complicated measuring device.
第１図は本発明の実施例の発熱特性図、第２図は温度−
０２濃度対称特性図、
である。
時開（１）
秦各日月 グらジ２．ジψ午邑イダ・Ｉａ２Ｍイ々？（
９ぜトを主図隼 １ 図
温崖−０・、儂度対釘特往図
宅２ 図Fig. 1 is a heat generation characteristic diagram of an embodiment of the present invention, and Fig. 2 is a temperature -
02 concentration symmetry characteristic diagram. Time opening (1) Hata each day moon gurage 2. Ji ψ Gomura Ida Ia2M Ii? (
9 Zeto is the main figure Hayabusa 1 Figure On Cliff-0・, Natsu vs Kugi Tokou Zutaku 2 Figure
Claims (1)
との混合物を、不可逆性感温色素を塗布したラベルを外
側に貼着した容器内に酸素を遮断した状態で保持してお
き、必要に応じて遮断状態を解き、該容器内に酸素濃度
を測定するガスを導入して酸化反応を行わしめ、発熱温
度に応じて感温色素が変色するのを利用し、該被酸化物
の発熱温度より検出することを特徴とする酸素濃度の測
定方法。A mixture of an oxidizable substance and a catalyst, which undergoes an exothermic reaction in the presence of oxygen gas, is kept in a container with a label coated with an irreversible temperature-sensitive dye affixed to the outside in an oxygen-blocked state. Then, the gas for measuring the oxygen concentration is introduced into the container to cause an oxidation reaction, and by utilizing the fact that the temperature-sensitive dye changes color according to the exothermic temperature, the temperature is lower than the exothermic temperature of the object. A method for measuring oxygen concentration characterized by detecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29552786A JPS63148149A (en) | 1986-12-10 | 1986-12-10 | Method for measuring oxygen concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29552786A JPS63148149A (en) | 1986-12-10 | 1986-12-10 | Method for measuring oxygen concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63148149A true JPS63148149A (en) | 1988-06-21 |
Family
ID=17821777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29552786A Pending JPS63148149A (en) | 1986-12-10 | 1986-12-10 | Method for measuring oxygen concentration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63148149A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0278935A (en) * | 1988-07-30 | 1990-03-19 | Boehringer Mannheim Gmbh | Carrier matrix separably impregnated with reagent, manufacture thereof, carrier for separably impregnated reagent and testing device and method measuring sample content |
| JP2003254922A (en) * | 2002-02-28 | 2003-09-10 | Shimizu Pharmaceutical Co Ltd | Oxygen detector and its packing body |
-
1986
- 1986-12-10 JP JP29552786A patent/JPS63148149A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0278935A (en) * | 1988-07-30 | 1990-03-19 | Boehringer Mannheim Gmbh | Carrier matrix separably impregnated with reagent, manufacture thereof, carrier for separably impregnated reagent and testing device and method measuring sample content |
| JP2003254922A (en) * | 2002-02-28 | 2003-09-10 | Shimizu Pharmaceutical Co Ltd | Oxygen detector and its packing body |
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