JPH11211665A - Method and material for detection of no2 gas - Google Patents
Method and material for detection of no2 gasInfo
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- JPH11211665A JPH11211665A JP1047798A JP1047798A JPH11211665A JP H11211665 A JPH11211665 A JP H11211665A JP 1047798 A JP1047798 A JP 1047798A JP 1047798 A JP1047798 A JP 1047798A JP H11211665 A JPH11211665 A JP H11211665A
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- gas
- porous body
- change
- fluorescence
- detecting
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、空気中の有害ガス
であるＮＯ2 ガスを吸着させて、濃度を測定するＮＯ2
ガス検出法およびＮＯ2 ガス検出材料に関するものであ
る。The present invention relates, in adsorbing the NO 2 gas is harmful gases in the air, NO 2 for measuring the concentration
The present invention relates to a gas detection method and a NO 2 gas detection material.
【０００２】[0002]
【従来の技術】現在、大気汚染物質による地球環境への
影響が問題とされている。大気汚染物質には、窒素酸化
物（ＮＯx ；ＮＯ，ＮＯ2 等）、硫黄酸化物、一酸化炭
素、浮遊粒子状物質、光化学オキシダント等がある。日
本ではこれらの汚染物質について環境基準を設定し、各
種排出規制を中心に各種政策を実施した結果、ＳＯ2 や
ＣＯなどは排出が改善され、それらの濃度が減少してい
る。しかし、ＮＯ2 濃度の年推移はほとんど変化がなく
改善されていない。特に大都市ではＮＯ2 濃度の環境基
準の達成状況が低い。このため、ＮＯ2 濃度の測定に関
しては、ガス濃度の分布調査や地球環境影響評価を制度
よく行うために、多地点での環境監視を行う必要があ
る。そのために、安価、小型、且つ使い方が簡便なガス
センサーの開発が望まれている。2. Description of the Related Art At present, the effect of air pollutants on the global environment is a problem. The air pollutants, nitrogen oxides (NOx; NO, NO 2, etc.), sulfur oxides, carbon monoxide, suspended particulate matter, there is a photochemical oxidants like. In Japan sets the environmental standards for these pollutants, various emission control result of the various policies mainly, such as SO 2 and CO is improved discharged, their concentration is reduced. However, the annual change of the NO 2 concentration has hardly changed and has not been improved. Especially in large cities low achievement of environmental standards NO 2 concentration. Therefore, regarding the measurement of the NO 2 concentration, it is necessary to monitor the environment at multiple points in order to systematically carry out the distribution survey of the gas concentration and the global environmental impact assessment. Therefore, development of a gas sensor that is inexpensive, small, and easy to use is desired.
【０００３】現在、大気環境のＮＯx 濃度を測定してい
る方法には、ザルツマン吸光光度法（文献；Ｂ．Ｅ．Ｓ
ａｌｔｚｍａｎ，Ａｎａｌ．Ｃｈｅｍ．，２６ １９４
９−１９５５（１９５４））と化学発光法がある（ザル
ツマン吸光光度法と化学発光法の２つはＪＩＳ Ｂ ７
９５３に規定）。これらの特徴は、大気中の数〜数１０
ｐｐｂレベルのＮＯx 濃度を測定でき、ＮＯx ガスだけ
を選択的に検出できる点である。しかし、問題点として
は装置が大型で価格が高い上にメンテナンスが必要なこ
となどがあげられる。このため現状のＮＯx 濃度測定装
置では多くの地点で測定することが困難である。[0003] At present, the method for measuring the NOx concentration in the atmospheric environment includes the Salzman absorption spectrophotometry (reference: BES).
altzman, Anal. Chem. , 26 194
9-1955 (1954)) and a chemiluminescence method (the two methods of the Salzman absorption method and the chemiluminescence method are JIS B7).
953). These features can be attributed to several to several tens of
The point is that the ppb level NOx concentration can be measured and only the NOx gas can be selectively detected. However, the problems are that the device is large, expensive, and requires maintenance. For this reason, it is difficult to measure at many points with the current NOx concentration measuring device.
【０００４】一方、実用化されているＮＯx センサ（文
献；佐竹和子、小林愛、中原毅、竹内隆、化学センサ研
究発表会（１９８９）、Ｐ９７−１００）はすべて排出
源用のもので、検出限界が大気環境中のＮＯx 濃度であ
る数１０ｐｐｂレベルに比べて１０ｐｐｍと悪く、大気
中のＮＯ2 濃度を測定することは困難である。また、研
究段階のＮＯx センサでは、酸化物半導体、有機半導体
や固体電解質等を用いて導電率や起電力等で検出する方
法が盛んに研究されている。これらのセンサは検出感度
の面での向上はみられるが、ガス選択性が悪い、あるい
は信頼性に欠けるなどの問題点があり、実用化に至って
いない。On the other hand, NOx sensors that have been put into practical use (literatures: Kazuko Satake, Ai Kobayashi, Takeshi Nakahara, Takashi Takeuchi, Chemical Sensor Research Conference (1989), P97-100) are all for emission sources, and are used for detection. limit is bad and 10ppm relative to the number 10ppb level is NOx concentration in the air environment, it is difficult to measure the concentration of NO 2 in the atmosphere. As for the NOx sensor in the research stage, a method of detecting with an electric conductivity, an electromotive force or the like using an oxide semiconductor, an organic semiconductor, a solid electrolyte, or the like has been actively studied. Although these sensors have improved detection sensitivity, they have problems such as poor gas selectivity and lack of reliability, and have not been put to practical use.
【０００５】以上のことから現在のＮＯx 濃度測定装置
やＮＯx センサでは、大気中のサブｐｐｍレベルのＮＯ
x 濃度を多くの地点で測定することが難しいのが現状で
ある。[0005] From the above, the current NOx concentration measuring device and NOx sensor have a sub-ppm level of NO in the atmosphere.
At present, it is difficult to measure x concentration at many points.
【０００６】[0006]
【発明が解決しようとする課題】本発明は上記の事情に
鑑みてなされたもので、小型で、高感度で、応答速度が
速く、繰り返し使用可能なＮＯ2 ガス検出法およびＮＯ
2 ガス検出材料を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has a small-size, high-sensitivity, high-speed response, and a reusable NO 2 gas detection method and NO.
2. To provide a gas detection material.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に本発明のＮＯ2 ガス検出法は、ＮＯ2 ガスと透明なマ
トリクス吸着剤である多孔体の孔中に吸着した検知材と
の相互作用による可逆的な蛍光強度の変化を測定するこ
とによりＮＯ2 ガスを検出することを特徴とする。Means for Solving the Problems To achieve the above object, the method of detecting NO 2 gas according to the present invention is a method of detecting the interaction between NO 2 gas and a sensing material adsorbed in the pores of a porous material which is a transparent matrix adsorbent. NO 2 gas is detected by measuring a reversible change in fluorescence intensity due to the action.
【０００８】また本発明は、上記ＮＯ2 ガス検出法にお
いて、多孔体として、平均孔径が２００オングストロー
ム以下の透明な多孔体を用いることを特徴とする。また
本発明は、上記ＮＯ2 ガス検出法において、検知材とし
て、可視ＵＶ波長領域に吸収、蛍光をもつ金属フタロシ
アニン系色素もしくはローダミン系色素を用いることを
特徴とする。Further, the present invention is characterized in that in the above-mentioned NO 2 gas detection method, a transparent porous body having an average pore diameter of 200 Å or less is used as the porous body. Further, the present invention is characterized in that in the NO 2 gas detection method, a metal phthalocyanine dye or a rhodamine dye having absorption and fluorescence in a visible UV wavelength region is used as a detection material.
【０００９】また本発明のＮＯ2 ガス検出材料は、透明
なマトリクスである多孔体の孔中にＮＯ2 ガスとの相互
作用による可逆的な蛍光強度の変化に伴い、２００〜２
０００ｎｍの可視ＵＶ波長領域で蛍光変化を示す検知材
が吸着されていることを特徴とするものである。Further, the NO 2 gas detecting material of the present invention has a structure in which the reversible change in fluorescence intensity due to the interaction with NO 2 gas is caused in the pores of the porous body which is a transparent matrix.
A detection material exhibiting a change in fluorescence in the visible UV wavelength region of 000 nm is adsorbed.
【００１０】また本発明は、上記ＮＯ2 ガス検出材料に
おいて、多孔体の平均孔径が２００オングストローム以
下の透明な多孔体であることを特徴とするものである。
また本発明は、上記ＮＯ2 ガス検出材料において、検知
材が２００〜２０００ｎｍの可視ＵＶ波長領域に吸収、
蛍光をもつ金属フタロシアニン系色素もしくはローダミ
ン系色素であることを特徴とするものである。The present invention is also characterized in that in the NO 2 gas detection material, the porous body is a transparent porous body having an average pore diameter of 200 Å or less.
Further, the present invention provides the NO 2 gas detection material, wherein the detection material absorbs in a visible UV wavelength region of 200 to 2000 nm,
It is a metal phthalocyanine dye or rhodamine dye having fluorescence.
【００１１】[0011]
【発明の実施の形態】以下図面を参照して本発明の実施
の形態例を詳細に説明する。本発明は、ＮＯ2 ガスと透
明なマトリクス吸着剤である多孔体の孔中に吸着した検
知材との物理的、化学的な相互作用によって生ずる可逆
変化に起因する蛍光強度の変化を測定することでＮＯ2
ガスを検出することを特徴とする。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. The present invention is to measure a change in fluorescence intensity caused by a reversible change caused by a physical or chemical interaction between a NO 2 gas and a sensing material adsorbed in pores of a porous body which is a transparent matrix adsorbent. And NO 2
It is characterized by detecting gas.
【００１２】多孔体の平均孔径と可視ＵＶ波長領域（２
００〜２０００ｎｍ）での透過スペクトルを測定した結
果、平均孔径２００オングストローム以下ではほとんど
スペクトル変化がなかったが、それ以上の孔径のもので
は可視領域（３５０〜８００ｎｍ）で急激な透過率の減
少が観察された。従って、本発明で用いる多孔体の平均
孔径は２００オングストローム以下で、２００〜２００
０ｎｍの可視ＵＶ波長領域で透明な多孔体を使用する。
多孔体の比表面積は１ｇ当たり１００ｍ2 以上である。
例えば、ガラス多孔体または有機高分子多孔体を用い
る。なお、この明細書における多孔体の形状としては、
薄膜、バルク、ファイバ（コア、及びクラッド）、光導
波路をはじめ透過で蛍光測定が可能な形状のものをすべ
てを含む。The average pore size of the porous body and the visible UV wavelength region (2
As a result of measuring a transmission spectrum at a wavelength of from 2000 to 2000 nm, there was almost no change in spectrum at an average pore diameter of 200 Å or less, but a sharp decrease in transmittance was observed in a visible region (350 to 800 nm) with an average pore diameter of 200 Å or more. Was done. Therefore, the average pore diameter of the porous material used in the present invention is 200 Å or less, and
A porous body transparent in the visible UV wavelength region of 0 nm is used.
The specific surface area of the porous body is 100 m 2 or more per gram.
For example, a glass porous body or an organic polymer porous body is used. In addition, as the shape of the porous body in this specification,
Including thin films, bulks, fibers (cores and claddings), optical waveguides, and all other shapes that allow fluorescence measurement through transmission.
【００１３】検知材として、金属フタロシアニン系色素
およびローダミン系色素を含む多孔体からなることを特
徴とする。検知材を多孔体の孔中で導入する方法とし
て、検知材を単独もしくは他の化合物と混合して溶液と
して多孔体に含浸させて孔中に導入する方法、検知材を
単独でもしくは他の化合物と混合して溶融して孔中に導
入する方法、および検知材を単独でもしくは他の化合物
と混合してゾル−ゲル法により多孔体に作製する際（ス
ピンコート、ディップコート等）に孔中に導入する方法
がある。[0013] The detection material is characterized by comprising a porous material containing a metal phthalocyanine dye and a rhodamine dye. As a method of introducing the detection material into the pores of the porous material, a method of impregnating the porous material as a solution by mixing the detection material alone or with another compound and introducing the detection material into the pores, the detection material alone or another compound And the method of mixing and melting into a hole and introducing the detecting material alone or mixed with another compound into a porous body by a sol-gel method (spin coating, dip coating, etc.). There is a method to introduce.
【００１４】本発明では吸着剤として多孔体を用いるこ
とにより、吸着面積を増大し、感度を増大させることが
できる。それに伴い、小型なＮＯ2 検出用試験片等での
サンプリングが可能となる。In the present invention, by using a porous material as the adsorbent, the adsorption area can be increased and the sensitivity can be increased. Accordingly, sampling with a small NO 2 detection test piece or the like becomes possible.
【００１５】本発明における金属フタロシアニン系色
素、ローダミン系色素を含む多孔体は、ＮＯ2 ガスの存
在により、可逆的に蛍光強度が変化する。したがって、
蛍光強度の変化を測定すれば、ＮＯ2 ガスを検知し、繰
り返しＮＯ2 濃度を測定することができる。The porous body containing the metal phthalocyanine dye and the rhodamine dye according to the present invention reversibly changes in fluorescence intensity due to the presence of NO 2 gas. Therefore,
If the change in the fluorescence intensity is measured, the NO 2 gas can be detected, and the NO 2 concentration can be repeatedly measured.
【００１６】[0016]
【実施例】以下、本発明の実施例について具体的に説明
する。 ［実施例１］平均孔径４０オングストローム、サイズ８
ｍｍ×８ｍｍ×１ｍｍｔの多孔質ガラスチップを亜鉛フ
タロシアニン（以下、ＺｎＰｃという）の１．５×１０
-5ｍｏｌ／ｌ ＴＨＦ溶液に１時間含浸し、窒素気流下
で乾燥させることにより試料を作製した。使用した多孔
質ガラスの可視・ＵＶ透過スペクトルを図１（スペクト
ル波長範囲：２００〜２０００ｎｍ）に示す。多孔質ガ
ラスの透過スペクトルは、１３５０ｎｍ付近と１９００
ｎｍ付近に水の吸収ピークがみられ、この吸収は湿度お
よび放置時間により変化した。また、３５０ｎｍ以下に
ガラス自体の吸収あり、このガラスの有効な測定波長範
囲は３５０〜１０００ｎｍと判断した。Embodiments of the present invention will be specifically described below. [Example 1] Average pore diameter 40 Å, size 8
mm × 8 mm × 1 mmt porous glass chips were coated with zinc phthalocyanine (hereinafter referred to as ZnPc) at 1.5 × 10
A sample was prepared by impregnating in a -5 mol / l THF solution for 1 hour and drying under a nitrogen stream. The visible / UV transmission spectrum of the used porous glass is shown in FIG. 1 (spectral wavelength range: 200 to 2000 nm). The transmission spectra of the porous glass were around 1350 nm and 1900 nm.
An absorption peak of water was observed around nm, and this absorption changed with humidity and standing time. In addition, the glass itself absorbs at 350 nm or less, and the effective measurement wavelength range of this glass was determined to be 350 to 1000 nm.
【００１７】多孔質ガラスにＺｎＰｃを導入した試料の
吸収スペクトルを図２に、蛍光スペクトルを図３に示
す。この測定により、試料の最大吸収波長は６８０ｎ
ｍ、極大蛍光波長は６８６ｎｍで、可視ＵＶ波長領域に
吸収、蛍光をもつことが分かった。FIG. 2 shows an absorption spectrum of a sample in which ZnPc is introduced into porous glass, and FIG. 3 shows a fluorescence spectrum. By this measurement, the maximum absorption wavelength of the sample was 680 n
m, the maximum fluorescence wavelength was 686 nm, indicating absorption and fluorescence in the visible UV wavelength region.
【００１８】この試料に１２．３ｐｐｍのＮＯ2 ガスを
暴露したときの蛍光強度の時間変化を図４に示す。１
２．３ｐｐｍ ＮＯ2 ガスを試料にさらすと、時間の経
過とともに蛍光強度が減少した。また、ＮＯ2 ガスをさ
らすのをやめ、Ｎ2 雰囲気中に放置すると蛍光強度が徐
々に増加し、ＮＯ2 ガスをさらす前の蛍光強度まで回復
した。このときの応答時間は１００秒、回復時間１５０
０秒であった。ＮＯ2 ガス暴露前と回復後のＺｎＰｃの
蛍光スペクトルを図５に示す。図中、１１はＮＯ2 ガス
暴露前のＺｎＰｃの蛍光スペクトル、１２はＮＯ2 ガス
暴露後回復させたＺｎＰｃの蛍光スペクトルである。図
５の結果から、ＮＯ2 ガスに暴露する前と暴露後回復さ
せた試料の蛍光スペクトルは変化がなく、繰り返し測定
が可能であることが明らかになった。FIG. 4 shows the time change of the fluorescence intensity when this sample was exposed to 12.3 ppm of NO 2 gas. 1
Exposure of the sample to 2.3 ppm NO 2 gas reduced the fluorescence intensity over time. When the exposure to the NO 2 gas was stopped and the substrate was left in an N 2 atmosphere, the fluorescence intensity gradually increased and recovered to the fluorescence intensity before the NO 2 gas was exposed. The response time at this time is 100 seconds, and the recovery time is 150
It was 0 seconds. FIG. 5 shows the fluorescence spectra of ZnPc before the NO 2 gas exposure and after the recovery. In the figure, 11 is the fluorescence spectrum of ZnPc before NO 2 gas exposure, and 12 is the fluorescence spectrum of ZnPc recovered after exposure to NO 2 gas. From the results in FIG. 5, it was clarified that the fluorescence spectra of the samples recovered before and after the exposure to the NO 2 gas did not change, and repeated measurement was possible.
【００１９】［実施例２］実施例１と同じ多孔質ガラス
チップにローダミン（Ｒｈｏｄａｍｉｎｅ）Ｂを導入し
た例を示す。試料は、ローダミンＢの１．５×１０-5ｍ
ｏｌ／ｌエタノール溶液に含浸して作製した。こうして
得られた試料の吸収スペクトルを図６に、蛍光スペクト
ルを図７に示す。試料の最大吸収波長は５６０ｎｍ、極
大蛍光波長は５８０ｎｍで、可視ＵＶ波長領域に吸収、
蛍光を持つことが分かった。[Example 2] An example in which Rhodamine B is introduced into the same porous glass chip as in Example 1 will be described. The sample was 1.5 × 10 −5 m of Rhodamine B.
ol / l ethanol solution. FIG. 6 shows the absorption spectrum of the sample thus obtained, and FIG. 7 shows the fluorescence spectrum thereof. The sample has a maximum absorption wavelength of 560 nm and a maximum fluorescence wavelength of 580 nm, and absorbs in the visible UV wavelength range.
It turned out to have fluorescence.
【００２０】この試料にＮＯ2 ガスを実施例１のように
暴露すると蛍光強度が減少した。このときの、蛍光強度
の変化量（Ｆ0 ／Ｆ）をＮＯ2 濃度に対してプロットし
た図を図８に示す。ここでＦ0 は暴露前の蛍光強度、Ｆ
は最も強度が減少した時の蛍光強度である。蛍光強度の
変化量とＮＯ2 濃度の関係は、線形性があり、サブｐｐ
ｍレベルのＮＯ2 濃度が検出可能であることがわかっ
た。When this sample was exposed to NO 2 gas as in Example 1, the fluorescence intensity decreased. FIG. 8 shows a plot of the change in the fluorescence intensity (F 0 / F) at this time with respect to the NO 2 concentration. Where F 0 is the fluorescence intensity before exposure, F
Is the fluorescence intensity when the intensity decreases most. The relationship between the change in the fluorescence intensity and the NO 2 concentration is linear,
It was found that m-level NO 2 concentration was detectable.
【００２１】[0021]
【発明の効果】以上、説明したように、本発明のＮＯ2
ガス検出材料は多孔体の孔中に安定な金属フタロシアニ
ン系色素、ローダミン系色素を導入していることから、
ＮＯ2ガスとの相互作用による可逆的な蛍光強度の変化
を利用して、簡単にガス検知を行うことができる。ま
た、この可逆的な蛍光強度の変化を利用して、ＮＯ2 ガ
スを定量的に検出することができる。As described above, as described above, the NO 2 of the present invention is used.
Since the gas detection material introduces a stable metal phthalocyanine dye and rhodamine dye into the pores of the porous body,
Gas detection can be easily performed using a reversible change in fluorescence intensity due to interaction with NO 2 gas. Further, the NO 2 gas can be quantitatively detected by utilizing the reversible change in the fluorescence intensity.
【００２２】本発明のＮＯ2 ガス検知材料は、光学感
度、安定性、応答速度に優れている。また、製作容易
で、コスト面でも有利であり、非常に広範な応用が可能
である。さらに、光を利用しているため、電気的、磁気
的妨害に対して抵抗性を有している。The NO 2 gas detecting material of the present invention is excellent in optical sensitivity, stability, and response speed. Further, it is easy to manufacture, is advantageous in terms of cost, and can be used in a very wide range of applications. Furthermore, since light is used, it has resistance to electric and magnetic interference.
【００２３】また、本発明において使用する金属フタロ
シアニン系色素は、６８０ｎｍ付近、ローダミン系色素
は５６０ｎｍ付近に吸収を有するため、本発明において
は光源として発光ダイオードを、受光素子としてフォト
ダイオードを利用することができる。したがって、上記
ガス検出材料を用いた本発明のガス検出法は、小型化、
低コスト化の点で有利なものである。Further, the metal phthalocyanine dye used in the present invention has an absorption near 680 nm and the rhodamine dye has an absorption near 560 nm. Can be. Therefore, the gas detection method of the present invention using the above gas detection material is downsized,
This is advantageous in terms of cost reduction.
【００２４】さらに、本発明のＮＯ2 ガス検出法は、ガ
ス種に選択的に反応する検知材の選択を組み合わせるこ
とによっても他のガス種への応用が可能なことは自明で
ある。Further, it is obvious that the NO 2 gas detection method of the present invention can be applied to other gas types by combining the selection of a detection material which selectively reacts with the gas type.
【図１】本発明に係る多孔質ガラスの透過スペクトルの
一例を示す特性図である。FIG. 1 is a characteristic diagram showing an example of a transmission spectrum of a porous glass according to the present invention.
【図２】本発明に係る多孔質ガラスにＺｎＰｃを導入し
た試料の吸収スペクトルの一例を示す特性図である。FIG. 2 is a characteristic diagram showing an example of an absorption spectrum of a sample in which ZnPc is introduced into the porous glass according to the present invention.
【図３】本発明に係る多孔質ガラスにＺｎＰｃを導入し
た試料の蛍光スペクトルの一例を示す特性図である。FIG. 3 is a characteristic diagram showing an example of a fluorescence spectrum of a sample in which ZnPc is introduced into the porous glass according to the present invention.
【図４】本発明に係る多孔質ガラスにＺｎＰｃを導入し
た試料に１２．３ｐｐｍ ＮＯ2 ガスをさらしたときの
蛍光強度の時間変化の一例を示す特性図である。FIG. 4 is a characteristic diagram showing an example of a temporal change in fluorescence intensity when a sample obtained by introducing ZnPc into a porous glass according to the present invention is exposed to 12.3 ppm NO 2 gas.
【図５】本発明に係る多孔質ガラスにＺｎＰｃを導入し
た試料に１２．３ｐｐｍ ＮＯ2 ガスをさらした前後の
蛍光スペクトルの一例を示す特性図である。FIG. 5 is a characteristic diagram showing an example of a fluorescence spectrum before and after exposing a sample obtained by introducing ZnPc to the porous glass according to the present invention to 12.3 ppm NO 2 gas.
【図６】本発明に係る多孔質ガラスにローダミン（Ｒｈ
ｏｄａｍｉｎｅ）Ｂを導入した試料の吸収スペクトルの
一例を示す特性図である。FIG. 6 shows that the porous glass according to the present invention has rhodamine (Rh).
FIG. 4 is a characteristic diagram showing an example of an absorption spectrum of a sample into which (damine) B is introduced.
【図７】本発明に係る多孔質ガラスにローダミン（Ｒｈ
ｏｄａｍｉｎｅ）Ｂを導入した試料の蛍光スペクトルの
一例を示す特性図である。FIG. 7 shows an example of a porous glass according to the present invention having rhodamine (Rh).
FIG. 4 is a characteristic diagram showing an example of a fluorescence spectrum of a sample into which (damine) B is introduced.
【図８】本発明に係る多孔質ガラスにローダミン（Ｒｈ
ｏｄａｍｉｎｅ）Ｂを導入した試料について、ＮＯ2 ガ
スを暴露したときの蛍光強度の変化量のＮＯ2 濃度依存
性の一例を示す特性図である。FIG. 8 shows a method of forming a porous glass according to the present invention on rhodamine (Rh).
FIG. 4 is a characteristic diagram showing an example of the dependence of the amount of change in the fluorescence intensity on the NO 2 concentration when a sample into which Odamine) B is introduced is exposed to NO 2 gas.
１１ ＮＯ2 ガス暴露前のＺｎＰｃの蛍光スペクトル １２ ＮＯ2 ガス暴露後回復させたＺｎＰｃの蛍光スペ
クトル11 Fluorescence spectrum of ZnPc before exposure to NO 2 gas 12 Fluorescence spectrum of ZnPc recovered after exposure to NO 2 gas
Claims (6)
ある多孔体の孔中に吸着した検知材との相互作用による
可逆的な蛍光強度の変化を測定することによりＮＯ2 ガ
スを検出することを特徴とするＮＯ2 ガス検出法。1. A detecting an NO 2 gas by measuring a change in the reversible fluorescence intensity due to interaction with the sensing material adsorbed in the pores of the porous body is NO 2 gas and a transparent matrix adsorbent NO 2 gas detection method characterized by the above-mentioned.
ストローム以下の透明な多孔体を用いることを特徴とす
る請求項１記載のＮＯ2 ガス検出法。 2. The method for detecting NO 2 gas according to claim 1, wherein a transparent porous body having an average pore diameter of 200 Å or less is used as the porous body.
収、蛍光をもつ金属フタロシアニン系色素もしくはロー
ダミン系色素を用いることを特徴とする請求項１記載の
ＮＯ2 ガス検出法。3. The NO 2 gas detection method according to claim 1, wherein a metal phthalocyanine dye or a rhodamine dye having absorption and fluorescence in a visible UV wavelength region is used as the detection material.
ＮＯ2 ガスとの相互作用による可逆的な蛍光強度の変化
に伴い、２００〜２０００ｎｍの可視ＵＶ波長領域で蛍
光変化を示す検知材が吸着されていることを特徴とする
ＮＯ2 ガス検出材料。4. A detecting material which exhibits fluorescence change in a visible UV wavelength region of 200 to 2000 nm in accordance with a reversible change in fluorescence intensity due to interaction with NO 2 gas in pores of a porous body which is a transparent matrix. A NO 2 gas detection material which is adsorbed.
ーム以下の透明な多孔体であることを特徴とする請求項
４記載のＮＯ2 ガス検出材料。5. The NO 2 gas detection material according to claim 4, wherein the porous body is a transparent porous body having an average pore diameter of 200 Å or less.
Ｖ波長領域に吸収、蛍光をもつ金属フタロシアニン系色
素もしくはローダミン系色素であることを特徴とする請
求項４記載のＮＯ2 ガス検出材料。6. The detection material has a visible U of 200 to 2000 nm.
Absorption in V wavelength region, NO 2 gas detection material according to claim 4, wherein is a metal phthalocyanine dye or rhodamine dye having a fluorescence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01047798A JP3482118B2 (en) | 1998-01-22 | 1998-01-22 | NO 2 gas detection method and NO 2 gas detection material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01047798A JP3482118B2 (en) | 1998-01-22 | 1998-01-22 | NO 2 gas detection method and NO 2 gas detection material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11211665A true JPH11211665A (en) | 1999-08-06 |
| JP3482118B2 JP3482118B2 (en) | 2003-12-22 |
Family
ID=11751244
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01047798A Expired - Fee Related JP3482118B2 (en) | 1998-01-22 | 1998-01-22 | NO 2 gas detection method and NO 2 gas detection material |
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| Country | Link |
|---|---|
| JP (1) | JP3482118B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010175268A (en) * | 2009-01-27 | 2010-08-12 | Nippon Telegr & Teleph Corp <Ntt> | Gas measuring instrument and gas measuring method |
| JP2010261811A (en) * | 2009-05-07 | 2010-11-18 | Nippon Telegr & Teleph Corp <Ntt> | Gas measuring apparatus and method for the same |
-
1998
- 1998-01-22 JP JP01047798A patent/JP3482118B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010175268A (en) * | 2009-01-27 | 2010-08-12 | Nippon Telegr & Teleph Corp <Ntt> | Gas measuring instrument and gas measuring method |
| JP2010261811A (en) * | 2009-05-07 | 2010-11-18 | Nippon Telegr & Teleph Corp <Ntt> | Gas measuring apparatus and method for the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3482118B2 (en) | 2003-12-22 |
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