JPH04313047A - Odor sensor - Google Patents

Odor sensor

Info

Publication number
JPH04313047A
JPH04313047A JP6296691A JP6296691A JPH04313047A JP H04313047 A JPH04313047 A JP H04313047A JP 6296691 A JP6296691 A JP 6296691A JP 6296691 A JP6296691 A JP 6296691A JP H04313047 A JPH04313047 A JP H04313047A
Authority
JP
Japan
Prior art keywords
cyclodextrin
derivative
odor
molecular film
odor sensor
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
Application number
JP6296691A
Other languages
Japanese (ja)
Inventor
Hiroyuki Yamaguchi
裕之 山口
Kimie Enmanji
円満字 公衛
Itsuo Nishiyama
逸雄 西山
Kenzo Takahashi
健造 高橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6296691A priority Critical patent/JPH04313047A/en
Publication of JPH04313047A publication Critical patent/JPH04313047A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To make it possible to obtain sufficient response at a low odor concentration by supporting at least one of a cyclodextrin derivative and a metalloporphyrin derivative in an organic molecular film. CONSTITUTION:An organic molecular film 2 is formed in a crystal oscillator 1, and odor concentration is measured. In this molecular film 2, at least one of the derivative of cyclodextrin 10 and a metalloporphyrin derivative is supported. When this sensor is put into odor material (e.g. beta-ionone), the partition coefficient in the molecular film 2 and air is increased, and the odor material is adsorbed in the derivative of cyclodextrin 10 or the metalloporphyrin derivative. Thus the decrease in oscillating frequency is strikingly increased. Therefore, the sensitivity for the odor material can be improved.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明は臭い物質の濃度測定用の
臭気センサ−に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an odor sensor for measuring the concentration of odorous substances.

【0002】0002

【従来の技術】図2は例えば刊行物(岡畑惠雄著、「セ
ンサ技術」Vol.9,No.2,p49(1989)
)に記載の臭気センサ−の断面図である。図において、
1は水晶発振子、2は脂質2分子膜である。3は周波数
カウンタ、4はレコ−ダ、5はビ−カ−である。
[Prior Art] Fig. 2 shows, for example, a publication (written by Keio Okahata, "Sensor Technology" Vol. 9, No. 2, p. 49 (1989)).
) is a sectional view of the odor sensor described in FIG. In the figure,
1 is a crystal oscillator, and 2 is a lipid bilayer membrane. 3 is a frequency counter, 4 is a recorder, and 5 is a beaker.

【0003】従来の臭気センサ−は上記のように構成さ
れ、例えば臭気物質(β−ヨノン5.1mg)をビ−カ
−5(50ml)の中に入れると、水晶発振子1の発振
数は低下を始め5分後には720Hz低くなって一定と
なる。この発振子では1mgの物質が吸着すると0.9
5Hz振動数が低下するので、約760mgのβ−ヨノ
ンが2分子膜中に入ったことになる。
A conventional odor sensor is constructed as described above. For example, when an odorous substance (5.1 mg of β-ionone) is placed in a beaker 5 (50 ml), the number of oscillations of the crystal oscillator 1 is After 5 minutes, the frequency starts to decrease and becomes constant at 720 Hz. In this oscillator, when 1 mg of substance is adsorbed, 0.9
Since the 5 Hz vibration frequency decreased, approximately 760 mg of β-ionone entered the bilayer membrane.

【0004】0004

【発明が解決しようとする課題】上記のような従来の臭
気センサ−では100ppm程度の感度しかもっていな
いので、空気清浄機のモニタとしての臭気濃度の測定に
は向いていないという問題点があった。
[Problems to be Solved by the Invention] Conventional odor sensors as described above have a sensitivity of only about 100 ppm, so there is a problem that they are not suitable for measuring odor concentration as a monitor for air purifiers. Ta.

【0005】この発明はかかる問題点を解決するために
なされたものであり、低い臭気濃度においても十分感応
する臭気センサを提供することを目的としている。
[0005] The present invention has been made to solve these problems, and an object of the present invention is to provide an odor sensor that is sufficiently sensitive even at low odor concentrations.

【0006】[0006]

【課題を解決するための手段】この発明に係わる臭気セ
ンサーは、有機分子膜中にシクロデキストリン誘導体お
よび金属ポルフィリン誘導体のうちの少なくとも一方を
担持したものである。
[Means for Solving the Problems] The odor sensor according to the present invention has at least one of a cyclodextrin derivative and a metal porphyrin derivative supported in an organic molecular film.

【0007】[0007]

【作用】上記のように構成された臭気センサ−を臭気物
質(たとえばβ−ヨノン)中に入れると膜と空気中との
分配係数が増してシクロデキストリン誘導体あるいは金
属ポルフィリン誘導体に臭気物質が吸着し、発振周波数
の低下が著しくなる。ゆえに臭気物資に対する感度が著
しく良くなるのである。
[Operation] When the odor sensor configured as described above is placed in an odorous substance (for example, β-ionone), the partition coefficient between the membrane and the air increases, and the odorous substance is adsorbed onto the cyclodextrin derivative or metal porphyrin derivative. , the oscillation frequency decreases significantly. Therefore, sensitivity to odorants is significantly improved.

【0008】[0008]

【実施例】実施例1.図1はこの発明の一実施例を示す
断面図であり、図中、1は水晶発振子、2はジアルキル
アンモニウム塩=ポリスチレンスルホン酸コンプレック
スによる2分子膜、10はジメチル−β−シクロデキス
トリンを示す。センサ−の作り方は10重量部のジアル
キルアンモニウム塩水溶液(10%)、10重量部のポ
リスチレンスルホン酸ナトリウム水溶液(10%)を混
合して生じた沈殿を乾燥する。このもの1重量部と0.
3重量部のジメチル−β−シクロデキストリンを10重
量部のクロロホルムに溶かし水晶発振子にコ−トし乾燥
する。
[Example] Example 1. FIG. 1 is a cross-sectional view showing one embodiment of the present invention, in which 1 is a crystal oscillator, 2 is a bilayer membrane made of a dialkyl ammonium salt=polystyrene sulfonic acid complex, and 10 is dimethyl-β-cyclodextrin. . The sensor is made by mixing 10 parts by weight of a dialkylammonium salt aqueous solution (10%) and 10 parts by weight of a sodium polystyrene sulfonate aqueous solution (10%) and drying the resulting precipitate. 1 part by weight of this and 0.
3 parts by weight of dimethyl-β-cyclodextrin is dissolved in 10 parts by weight of chloroform, coated on a crystal oscillator, and dried.

【0009】上記のように構成された臭気センサ−に於
いては、臭気物質はシクロデキストリン10に包接され
膜2中の濃度がシクロデキストリン10がない時と比べ
て増加する。故に発振周波数は臭気物質の濃度の増加に
つれて急激に減少する。この時100ppbのβ−ヨノ
ンに対して1.2Hzの発振周波数低下があった。
In the odor sensor constructed as described above, the odorous substances are included in the cyclodextrin 10, and the concentration in the membrane 2 increases compared to when the cyclodextrin 10 is not present. Therefore, the oscillation frequency decreases rapidly as the concentration of odorant increases. At this time, the oscillation frequency decreased by 1.2 Hz for 100 ppb of β-ionone.

【0010】なお、この発明に用いられる有機分子膜と
しては、ジアルキルアンモニウム=ポリスチレンスルホ
ン酸分子コンプレックス、レシチン、ヒトの嗅覚細胞抽
出液、牛血清アルブミン、ポリビニルアルコ−ル、アセ
チルセルロ−ス、ポリ塩化ビニル等を挙げることができ
る。
[0010] The organic molecular membrane used in the present invention includes dialkylammonium polystyrene sulfonic acid molecular complex, lecithin, human olfactory cell extract, bovine serum albumin, polyvinyl alcohol, acetyl cellulose, polychloride. Examples include vinyl.

【0011】また、この発明に用いられるシクロデキス
トリン誘導体としては、α、β、γ−シクロデキストリ
ン、ジメチル−β−シクロデキストリン、ハイドロキシ
プロピル−β−シオクロデキストリン、β−シクロデキ
ストリンポリマ−,ジエチル−β−シクロデキストリン
、アンフィリックシクロデキストリンを挙げることがで
きる。
Cyclodextrin derivatives used in the present invention include α, β, γ-cyclodextrin, dimethyl-β-cyclodextrin, hydroxypropyl-β-cyclodextrin, β-cyclodextrin polymer, and diethyl-cyclodextrin. Examples include β-cyclodextrin and amphilic cyclodextrin.

【0012】さらに、この発明に用いられる金属ポルフ
ィリン誘導体としては、銅クロロフィル、銅クロロフィ
リン、クロロフィルa,クロロフィルb,クロロフィラ
イドa,銅テトラフェニルポルフィリン、鉄テトラカル
ボキシフタロシアニン等を挙げることができる。
Further, the metal porphyrin derivatives used in the present invention include copper chlorophyll, copper chlorophyllin, chlorophyll a, chlorophyll b, chlorophyllide a, copper tetraphenylporphyrin, iron tetracarboxyphthalocyanine, and the like.

【0013】検知できる臭気成分としては、β−ヨノン
、d−リモネン、しょうのう、クマリン、シトラ−ル、
イソアミルアセテ−ト、メチルアセテ−ト、エ−テル、
アンモニア等を挙げることができる。
[0013] Detectable odor components include β-ionone, d-limonene, camphor, coumarin, citral,
Isoamyl acetate, methyl acetate, ether,
Examples include ammonia.

【0014】実施例2.上記実施例1では2分子膜2と
してジアルキルアンモニウム塩=ポリスチレンスルホン
酸分子コンプレックスを用いていたが、2分子膜2とし
てレシチンを用いた時100ppbのβ−ヨノンに対し
て0.8Hzの発振周波数低下があった。
Example 2. In Example 1 above, a dialkyl ammonium salt=polystyrene sulfonic acid molecular complex was used as the bilayer membrane 2, but when lecithin was used as the bilayer membrane 2, the oscillation frequency decreased by 0.8 Hz for 100 ppb of β-ionone. was there.

【0015】実施例3.上記実施例1においてジメチル
−β−シクロデキストリンを2分子膜に添加していたが
、替りに銅クロロフィリンを添加した場合100ppb
のアンモニアに対して0.6Hzの発振周波数低下があ
った。
Example 3. In Example 1 above, dimethyl-β-cyclodextrin was added to the bilayer membrane, but when copper chlorophyllin was added instead, 100 ppb
There was a decrease in oscillation frequency of 0.6 Hz with respect to ammonia.

【0016】参考例1.上記実施例1においてジメチル
−β−シクロデキストリンを添加しない場合、100p
pbのβ−ヨノンに対して周波数の低下はみられなかっ
た。
Reference example 1. When dimethyl-β-cyclodextrin is not added in Example 1 above, 100p
No decrease in frequency was observed for β-ionone of pb.

【0017】参考例2.上記実施例3において銅クロロ
フィリンを添加しない場合100ppbのアンモニアに
対して周波数の低下はなかった。
Reference example 2. In Example 3 above, when copper chlorophyllin was not added, there was no decrease in frequency with respect to 100 ppb of ammonia.

【0018】[0018]

【発明の効果】以上のように、この発明によれば、有機
分子膜中にシクロデキストリン誘導体および金属ポルフ
ィリン誘導体のうちの少なくとも一方を担持したので、
低い臭気濃度においても十分感応する効果がある。
As described above, according to the present invention, since at least one of a cyclodextrin derivative and a metal porphyrin derivative is supported in an organic molecular film,
It has a sufficient sensitivity effect even at low odor concentrations.

【図面の簡単な説明】[Brief explanation of drawings]

【図1】この発明の一実施例を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of the present invention.

【図2】従来の臭気センサ−を示す構成図であるFIG. 2 is a configuration diagram showing a conventional odor sensor.

【符号の説明】[Explanation of symbols]

1  水晶発振子 2  有機分子膜 10  シクロデキストリン誘導体 1 Crystal oscillator 2 Organic molecular film 10 Cyclodextrin derivative

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】  水晶発振子に有機分子膜を形成した臭
気センサ−において、上記有機分子膜中にシクロデキス
トリン誘導体および金属ポルフィリン誘導体のうちの少
なくとも一方を担持したことを特徴とする臭気センサ−
1. An odor sensor comprising an organic molecular film formed on a crystal oscillator, characterized in that the organic molecular film supports at least one of a cyclodextrin derivative and a metal porphyrin derivative.
.
JP6296691A 1991-03-27 1991-03-27 Odor sensor Pending JPH04313047A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6296691A JPH04313047A (en) 1991-03-27 1991-03-27 Odor sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6296691A JPH04313047A (en) 1991-03-27 1991-03-27 Odor sensor

Publications (1)

Publication Number Publication Date
JPH04313047A true JPH04313047A (en) 1992-11-05

Family

ID=13215588

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6296691A Pending JPH04313047A (en) 1991-03-27 1991-03-27 Odor sensor

Country Status (1)

Country Link
JP (1) JPH04313047A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6582583B1 (en) 1998-11-30 2003-06-24 The United States Of America As Represented By The Department Of Health And Human Services Amperometric biomimetic enzyme sensors based on modified cyclodextrin as electrocatalysts
WO2008114607A1 (en) * 2007-03-22 2008-09-25 Shinshu University Water-soluble metal phthalocyanine complex, sensor element, sensor using the sensor element, and method for production of sensor element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6582583B1 (en) 1998-11-30 2003-06-24 The United States Of America As Represented By The Department Of Health And Human Services Amperometric biomimetic enzyme sensors based on modified cyclodextrin as electrocatalysts
WO2008114607A1 (en) * 2007-03-22 2008-09-25 Shinshu University Water-soluble metal phthalocyanine complex, sensor element, sensor using the sensor element, and method for production of sensor element

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