JPH07294421A - Total reflection absorbing spectrum measuring device - Google Patents
Total reflection absorbing spectrum measuring deviceInfo
- Publication number
- JPH07294421A JPH07294421A JP11432394A JP11432394A JPH07294421A JP H07294421 A JPH07294421 A JP H07294421A JP 11432394 A JP11432394 A JP 11432394A JP 11432394 A JP11432394 A JP 11432394A JP H07294421 A JPH07294421 A JP H07294421A
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- Japan
- Prior art keywords
- sample
- liquid sample
- reflecting surface
- measuring
- liquid
- 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.)
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- Optical Measuring Cells (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、全反射吸収スペクトル
測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a total reflection absorption spectrum measuring device.
【０００２】[0002]
【従来の技術】全反射吸収（Attenuated Total Reflect
ance）スペクトル測定装置による試料分析の原理は次の
通りである。試料の分析を行なおうとする面に、試料よ
りも屈折率の高い物質で作成されたプリズム（ＡＴＲプ
リズム）を密着させ、ＡＴＲプリズム側からＡＴＲプリ
ズムと試料分析面との境界面に向かって全反射臨界角以
上の入射角で赤外線を入射させる。この条件下では赤外
線はその境界面で全反射を行なうが、僅かに（測定赤外
線波長の数分の１）境界面を越えて試料側にまで浸透
し、試料の表面部分により固有の吸収を受ける。従っ
て、反射された赤外線の吸収スペクトルを解析すること
により、試料の分析を行なうことができる。2. Description of the Related Art Attenuated Total Reflection
ance) The principle of sample analysis by a spectrum measuring device is as follows. A prism (ATR prism) made of a material having a higher refractive index than the sample is brought into close contact with the surface of the sample to be analyzed, and the entire surface is moved from the ATR prism side to the boundary surface between the ATR prism and the sample analysis surface. Infrared rays are made incident at an incident angle equal to or greater than the critical reflection angle. Under this condition, infrared rays are totally reflected at the boundary surface, but slightly penetrate the boundary surface (a fraction of the measured infrared wavelength) to the sample side, and are inherently absorbed by the surface part of the sample. . Therefore, the sample can be analyzed by analyzing the absorption spectrum of the reflected infrared rays.
【０００３】[0003]
【発明が解決しようとする課題】全反射吸収スペクトル
測定装置では、ＡＴＲプリズムの反射面に液体試料を接
触させることにより液体試料の分析を、また、固体試料
を押しつけることにより固体試料の分析を行なうことが
できる。従来の液体試料測定用の測定部ユニット４０は
図５に示すように、底部にＡＴＲプリズム４２を埋設し
た容器４１により構成されている。測定時は容器４１に
液体試料４８を入れ、測定部ユニット４０の下部に配置
した光源４６から赤外線をＡＴＲプリズム４２の反射面
４２ａに向けて入射し、吸収を受けて反射した赤外線を
検出器４７で検出する。このように、液体試料測定用の
測定部ユニット４０ではＡＴＲプリズム４２の反射面４
２ａ側に容器４１が存在するため、大きな固体試料はＡ
ＴＲプリズム４２に接触させることができない。仮に、
大きな固体試料をＡＴＲプリズム４２に密着させること
ができるように容器４１を大きくすると、液体試料測定
時には多量の液体試料が必要となる。このため、従来の
全反射吸収スペクトル測定装置では、液体試料測定用の
測定部ユニットと固体試料測定用の測定部ユニットとは
別々に用意されていた。In the total reflection absorption spectrum measuring apparatus, a liquid sample is analyzed by bringing the liquid sample into contact with the reflecting surface of the ATR prism, and a solid sample is analyzed by pressing the solid sample. be able to. As shown in FIG. 5, a conventional measuring section unit 40 for measuring a liquid sample is composed of a container 41 in which an ATR prism 42 is embedded in the bottom. At the time of measurement, the liquid sample 48 is put in the container 41, infrared rays are made incident from the light source 46 arranged in the lower part of the measurement section unit 40 toward the reflecting surface 42a of the ATR prism 42, and the infrared rays reflected by being absorbed are detected by the detector 47. Detect with. As described above, in the measuring unit 40 for measuring a liquid sample, the reflecting surface 4 of the ATR prism 42 is
Since the container 41 exists on the 2a side, a large solid sample is A
It cannot be brought into contact with the TR prism 42. what if,
If the container 41 is made large so that a large solid sample can be brought into close contact with the ATR prism 42, a large amount of liquid sample is required when measuring the liquid sample. Therefore, in the conventional total reflection absorption spectrum measuring apparatus, the measuring unit unit for measuring the liquid sample and the measuring unit unit for measuring the solid sample are separately prepared.
【０００４】また、従来の液体試料測定用の測定部ユニ
ット４０では、１つの液体試料の測定が終了した後、別
の種類の液体試料を測定すべく前の試料をＡＴＲプリズ
ム４２の反射面４２ａから完全に洗い流すために、測定
部ユニット４０を測定装置から取り外す必要があった。Further, in the conventional measuring unit 40 for measuring a liquid sample, after the measurement of one liquid sample is completed, the previous sample is reflected on the reflecting surface 42a of the ATR prism 42 in order to measure another type of liquid sample. It was necessary to remove the measuring unit 40 from the measuring device in order to completely flush it from the measuring device.
【０００５】本発明はこのような課題を解決するために
成されたものであり、その目的とするところは、１つの
測定部ユニットで固体試料及び液体試料の双方の測定を
行なうことができ、また、反射面の洗浄が容易な全反射
吸収スペクトル測定装置を提供することにある。The present invention has been made to solve such a problem, and an object thereof is to measure both a solid sample and a liquid sample with one measuring section unit, Another object of the present invention is to provide a total reflection absorption spectrum measuring apparatus in which the reflecting surface can be easily washed.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に成された本発明に係る全反射吸収スペクトル測定装置
は、反射面を僅かに突出させた状態でＡＴＲプリズムを
固定したプリズム固定部と、プリズム固定部の周囲に設
けた排液溝とを有する測定部ユニットを備えたことを特
徴とする。A total reflection absorption spectrum measuring apparatus according to the present invention made to solve the above-mentioned problems includes a prism fixing portion to which an ATR prism is fixed with a reflecting surface slightly protruding. A measuring unit unit having a drainage groove provided around the prism fixing portion is provided.
【０００７】[0007]
【作用】液体試料測定の際は、ＡＴＲプリズムの反射面
に液体試料を少量滴下し、液体試料が反射面の赤外線入
射領域を覆うようにする。なお、ここで、反射面に滴下
した液体試料の上から押さえ板を置くことにより、液体
試料を反射面上に広がらせてもよい。固体試料測定の際
は、ＡＴＲプリズムの反射面に固体試料の測定面を押し
つける。本発明に係る全反射吸収スペクトル測定装置の
測定部ユニットでは、反射面の周囲には溝（排液溝）が
あるだけであるため（溝は当然反射面の高さよりも低
い）、大きな固体であっても従来の測定部ユニットのよ
うに容器の壁に妨げられて密着することができないとい
うことがない。When measuring a liquid sample, a small amount of the liquid sample is dropped on the reflecting surface of the ATR prism so that the liquid sample covers the infrared ray incident region of the reflecting surface. Here, the liquid sample may be spread on the reflecting surface by placing a pressing plate on the liquid sample dropped on the reflecting surface. When measuring a solid sample, the measurement surface of the solid sample is pressed against the reflective surface of the ATR prism. In the measuring unit of the total reflection absorption spectrum measuring apparatus according to the present invention, since there is only a groove (drainage groove) around the reflecting surface (the groove is naturally lower than the height of the reflecting surface), it is a large solid. Even if there is, there is no possibility that the wall of the container cannot be intimately adhered as in the conventional measuring unit.
【０００８】また、別の液体試料を測定する際は、測定
部ユニットをそのままにした状態でＡＴＲプリズムの反
射面に洗浄液を滴下して前回の液体試料を洗い流すこと
ができる。洗浄液は反射面周囲の排液溝に流出し、反射
面には残らない。Further, when another liquid sample is measured, the cleaning liquid can be washed off by dropping a cleaning liquid on the reflection surface of the ATR prism while the measuring unit unit is left as it is. The cleaning liquid flows out into the drainage groove around the reflection surface and does not remain on the reflection surface.
【０００９】[0009]
【実施例】本発明の一実施例である全反射吸収スペクト
ル測定装置の測定部ユニットを図１及び図２により説明
する。本実施例の測定部ユニット１０は図２に示すよう
に円形となっており、本体には、各種液体試料に対して
侵食されないような材料（例えば、ステンレス鋼板、硬
質プラスチック板等）が用いられる。本体の中央にはＡ
ＴＲプリズム１２を固定した平坦部１１が、そして、そ
の周囲には洗浄液等を排出するための排液溝１３が形成
されている。図１に示すように、ＡＴＲプリズム１２は
平坦部１１から僅かに突出するように埋設されている。
排液溝１３の底部の１箇所又は複数箇所（図２では１箇
所）には、ドレイン孔１４が設けられている。DESCRIPTION OF THE PREFERRED EMBODIMENTS A measuring unit unit of a total reflection absorption spectrum measuring apparatus which is an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 2, the measuring unit 10 of this embodiment has a circular shape, and a material (for example, a stainless steel plate, a hard plastic plate, etc.) that does not corrode various liquid samples is used for the main body. . A in the center of the body
A flat portion 11 to which the TR prism 12 is fixed is formed, and a drain groove 13 for discharging a cleaning liquid or the like is formed around the flat portion 11. As shown in FIG. 1, the ATR prism 12 is embedded so as to slightly project from the flat portion 11.
A drain hole 14 is provided at one or a plurality of locations (one location in FIG. 2) on the bottom of the drainage groove 13.
【００１０】本実施例の測定部ユニット１０で液体試料
を測定する際は、まず、液体試料１８をＡＴＲプリズム
１２の反射面１２ａ上に滴下する。十分な量の液体試料
を用いることができるときは、やや多量の液体試料を反
射面１２ａ上に滴下して、反射面１２ａのほぼ全面を覆
うようにする。十分な量の液体試料を確保することがで
きないときは、液体試料１８を少量だけ反射面１２ａに
滴下し、その上に押さえ板１５を置くことにより反射面
１２ａ上で広がらせる。なお、測定赤外線の試料への侵
入深さは僅かであるため、反射面１２ａ上の液体試料の
膜厚は十分薄くてもよいが、仮に、一部で液体試料１８
が途切れて押さえ板１５がＡＴＲプリズム１２の反射面
１２ａに直接接触した場合のことを考慮して、押さえ板
１５には赤外線吸収量の少ない材料（例えば金属）を用
いることが望ましい。When measuring the liquid sample with the measuring unit 10 of this embodiment, first, the liquid sample 18 is dropped on the reflecting surface 12a of the ATR prism 12. When a sufficient amount of liquid sample can be used, a slightly large amount of liquid sample is dropped on the reflecting surface 12a so as to cover almost the entire reflecting surface 12a. When it is not possible to secure a sufficient amount of the liquid sample, a small amount of the liquid sample 18 is dropped on the reflecting surface 12a, and the pressing plate 15 is placed on the liquid sample 18 to spread it on the reflecting surface 12a. Since the depth of penetration of the measured infrared light into the sample is small, the film thickness of the liquid sample on the reflecting surface 12a may be sufficiently thin.
Considering the case where the pressing plate 15 is in contact with the reflecting surface 12a of the ATR prism 12 due to the break, it is preferable to use a material (for example, metal) having a small infrared absorption amount for the pressing plate 15.
【００１１】測定済みの液体試料を反射面１２ａから洗
い流すときは、測定部ユニット１０自体はその位置に置
いたまま、反射面１２ａに洗浄液を滴下又は放出する。
液体試料１８を含んだ洗浄液は排液溝１３に流れ落ち、
ドレイン孔１４から排出される。速やかに次の試料の測
定を開始したい場合は、ドライヤ等で反射面１２ａに温
風を吹き付けてもよい。本実施例の測定部ユニット１０
では周囲に風の放散を遮る壁がないため、乾燥も速やか
に行なわれる。When washing the measured liquid sample from the reflecting surface 12a, the measuring unit 10 itself is left at that position, and the washing liquid is dropped or discharged onto the reflecting surface 12a.
The cleaning liquid containing the liquid sample 18 flows down into the drain groove 13,
It is discharged from the drain hole 14. If it is desired to immediately start the measurement of the next sample, warm air may be blown to the reflecting surface 12a with a dryer or the like. Measuring unit 10 of this embodiment
Since there is no wall around it that blocks the release of wind, it dries quickly.
【００１２】なお、排液溝１３の底にドレイン孔１４を
設けるのではなく、排液溝１３の外周側の一部に堤を低
くした排出口を設け、測定部ユニット１０を傾けること
により液体試料１８及び洗浄液を排出するようにしても
よい。It should be noted that instead of providing the drain hole 14 at the bottom of the drainage groove 13, a drainage port having a lower bank is provided at a part of the outer peripheral side of the drainage groove 13, and the measuring unit 10 is tilted to remove the liquid. The sample 18 and the cleaning liquid may be discharged.
【００１３】固体試料を測定する際は、ＡＴＲプリズム
１２の反射面１２ａに固体試料の分析面を押し付けるだ
けでよい。図１に示すように、本実施例の測定部ユニッ
ト１０にはＡＴＲプリズム１２の反射面１２ａよりも高
い部分がないため、どのような大きな固体試料でも反射
面１２ａに密着させることができる。When measuring the solid sample, it is sufficient to press the analysis surface of the solid sample against the reflecting surface 12a of the ATR prism 12. As shown in FIG. 1, the measuring unit 10 of this embodiment does not have a portion higher than the reflecting surface 12a of the ATR prism 12, so that any large solid sample can be brought into close contact with the reflecting surface 12a.
【００１４】次に、本発明と同じく、液体試料と固体試
料の双方の測定を行なうことのできる測定部ユニットの
例を図３及び図４により説明する。図３の測定部ユニッ
ト２０はプリズム部と液体試料保持部２３とから構成さ
れる。プリズム部は、平板状の保持板２１に、その反射
面が僅かに突出するようにＡＴＲプリズム２２を固定し
たものである。保持板２１は磁性板で構成され、液体試
料保持部２３の周縁にはゴム磁石２６が設けられる。液
体試料を測定する際は、図３（ａ）に示すように、ゴム
磁石２６により液体試料保持部２３を保持板２１に固定
し、両者の間のスペースに液体試料２８を入れる。測定
後は、ゴムキャップ２５を取り外すことにより液体試料
２８をドレイン孔２４から排出し、洗浄液をそのスペー
スに入れて排出するという作業を繰り返す。また、液体
試料保持部２３を保持板２１から取り外して別途洗浄す
るようにしてもよい。Next, similar to the present invention, an example of a measuring unit unit capable of measuring both a liquid sample and a solid sample will be described with reference to FIGS. 3 and 4. The measuring section unit 20 of FIG. 3 is composed of a prism section and a liquid sample holding section 23. The prism portion is formed by fixing an ATR prism 22 to a flat plate-shaped holding plate 21 so that its reflection surface slightly projects. The holding plate 21 is composed of a magnetic plate, and a rubber magnet 26 is provided on the periphery of the liquid sample holding portion 23. When measuring the liquid sample, as shown in FIG. 3A, the liquid sample holding portion 23 is fixed to the holding plate 21 by the rubber magnet 26, and the liquid sample 28 is put in the space between the two. After the measurement, the operation of discharging the liquid sample 28 from the drain hole 24 by removing the rubber cap 25, and inserting the cleaning liquid into the space and discharging it is repeated. Alternatively, the liquid sample holder 23 may be removed from the holding plate 21 and separately cleaned.
【００１５】固体試料を測定する際は、液体試料保持部
２３を取り外し、ＡＴＲプリズム２２の反射面２２ａに
固体試料を押しつける。When measuring a solid sample, the liquid sample holder 23 is removed and the solid sample is pressed against the reflecting surface 22a of the ATR prism 22.
【００１６】図４の測定部ユニット３０も、図３のユニ
ットと同様、プリズム部と液体試料保持部３３とから構
成されるが、図３の例ではゴム磁石２６により両者を固
定していたのに対し、図４の例では液体試料保持部３３
は保持板３１に設けられた固定具３５のバネ３７の付勢
力により保持板３１に固定される。なお、プリズム部と
液体試料保持部３３との間の水密性を確保するために、
液体試料保持部３３の周縁にはゴムパッキン等を取り付
けておくことが望ましい。測定済みの液体試料は同様に
ドレイン孔３４から排出される。図４の例では、固定具
３５は固体試料をＡＴＲプリズム３２に押しつける為に
も使用することができる。なお、大きな固体試料も測定
することができるように、固定具３５は支点３６のとこ
ろで取り外せるようにしておくことが望ましい。The measuring section unit 30 of FIG. 4 is also composed of a prism section and a liquid sample holding section 33 similarly to the unit of FIG. 3, but in the example of FIG. 3, both are fixed by a rubber magnet 26. On the other hand, in the example of FIG.
Is fixed to the holding plate 31 by the urging force of a spring 37 of a fixture 35 provided on the holding plate 31. In order to ensure watertightness between the prism part and the liquid sample holding part 33,
It is desirable to attach a rubber packing or the like to the periphery of the liquid sample holder 33. The measured liquid sample is similarly discharged from the drain hole 34. In the example of FIG. 4, the fixture 35 can also be used to press the solid sample against the ATR prism 32. The fixture 35 is preferably detachable at the fulcrum 36 so that a large solid sample can be measured.
【００１７】[0017]
【発明の効果】本発明に係る全反射吸収スペクトル測定
装置の測定部ユニットでは反射面の周囲には排液溝があ
るだけであるため、従来の測定部ユニットのように容器
の壁に妨げられることなく、大きな固体試料であっても
測定することができる。また、一つの液体試料測定後に
別種の液体試料を測定する際は、測定部ユニットをその
ままにした状態でＡＴＲプリズムの反射面に洗浄液を滴
下して前回の液体試料を洗い流すことができる。更に、
反射面の周囲に壁が無いため、洗浄液の乾燥も速いとい
う特長を有する。Since the measuring unit of the total reflection absorption spectrum measuring apparatus according to the present invention has only the drainage groove around the reflecting surface, it is obstructed by the wall of the container like the conventional measuring unit. Without it, even a large solid sample can be measured. In addition, when measuring another liquid sample after measuring one liquid sample, the previous liquid sample can be washed away by dropping the cleaning liquid on the reflecting surface of the ATR prism with the measuring unit unit left as it is. Furthermore,
Since there is no wall around the reflective surface, the cleaning liquid dries quickly.
【図１】 本発明の一実施例である全反射吸収スペクト
ル測定装置の測定ユニットの縦断面図。FIG. 1 is a vertical cross-sectional view of a measuring unit of a total reflection absorption spectrum measuring apparatus according to an embodiment of the present invention.
【図２】 実施例の測定ユニットの平面図。FIG. 2 is a plan view of the measurement unit according to the embodiment.
【図３】 本発明に関連する測定ユニットの構造を示す
縦断面図（ａ）及び正面図（ｂ）。FIG. 3 is a vertical sectional view (a) and a front view (b) showing a structure of a measuring unit related to the present invention.
【図４】 本発明に関連する別の測定ユニットの構造を
示す上面図（ａ）及び正面図（ｂ）。FIG. 4 is a top view (a) and a front view (b) showing the structure of another measurement unit related to the present invention.
【図５】 従来の液体試料測定用の測定部ユニットの縦
断面図。FIG. 5 is a vertical cross-sectional view of a conventional measuring unit for liquid sample measurement.
１０、２０、３０、４０…測定部ユニット １１…平坦部 １２…ＡＴＲプリズム １２ａ…反射面 １３…排液溝 １４…ドレイン孔 １５…押さえ板 １８…液体試料 10, 20, 30, 40 ... Measuring unit unit 11 ... Flat portion 12 ... ATR prism 12a ... Reflecting surface 13 ... Drainage groove 14 ... Drain hole 15 ... Pressing plate 18 ... Liquid sample
Claims (1)
プリズムを固定したプリズム固定部と、プリズム固定部
の周囲に設けた排液溝とを有する測定部ユニットを備え
たことを特徴とする全反射吸収スペクトル測定装置。1. An ATR with a reflecting surface slightly protruding.
A total reflection absorption spectrum measuring apparatus comprising: a measuring unit unit having a prism fixing portion to which a prism is fixed and a drainage groove provided around the prism fixing portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6114323A JP2701740B2 (en) | 1994-04-28 | 1994-04-28 | Total reflection absorption spectrum measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6114323A JP2701740B2 (en) | 1994-04-28 | 1994-04-28 | Total reflection absorption spectrum measurement device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30130496A Division JPH09126992A (en) | 1996-10-24 | 1996-10-24 | Total reflection absorption spectrum measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07294421A true JPH07294421A (en) | 1995-11-10 |
| JP2701740B2 JP2701740B2 (en) | 1998-01-21 |
Family
ID=14634967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6114323A Expired - Lifetime JP2701740B2 (en) | 1994-04-28 | 1994-04-28 | Total reflection absorption spectrum measurement device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2701740B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002077616A1 (en) * | 2001-03-27 | 2002-10-03 | Euro-Celtique, S.A. | Atr crystal device |
| WO2009107988A3 (en) * | 2008-02-27 | 2009-11-26 | Jsm Healthcare Inc | Apparatus and method for analyzing urine components in toilet in real-time by using miniature atr infrared spectroscopy |
| KR100943095B1 (en) * | 2008-02-27 | 2010-02-18 | 제이에스엠헬스케어 주식회사 | The apparatus and method for real time analyzing components of urine in toilet by using minature atr infrared spectroscopy |
| CN107271366A (en) * | 2017-06-28 | 2017-10-20 | 中南民族大学 | Detect colorimetric bottle/pipe of nitrophenol |
| JP2019534453A (en) * | 2016-10-19 | 2019-11-28 | ゼネラル・エレクトリック・カンパニイ | Apparatus and method for evanescent waveguide sensing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04138340A (en) * | 1990-09-29 | 1992-05-12 | Shimadzu Corp | Infrared spectrum measuring head and measuring apparatus |
| JPH05504626A (en) * | 1990-03-02 | 1993-07-15 | ファイソンズ ピーエルシー | Sample cell used for chemical or biochemical tests |
-
1994
- 1994-04-28 JP JP6114323A patent/JP2701740B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05504626A (en) * | 1990-03-02 | 1993-07-15 | ファイソンズ ピーエルシー | Sample cell used for chemical or biochemical tests |
| JPH04138340A (en) * | 1990-09-29 | 1992-05-12 | Shimadzu Corp | Infrared spectrum measuring head and measuring apparatus |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002077616A1 (en) * | 2001-03-27 | 2002-10-03 | Euro-Celtique, S.A. | Atr crystal device |
| US6841792B2 (en) | 2001-03-27 | 2005-01-11 | Euro-Celtique, S.A. | ATR crystal device |
| WO2009107988A3 (en) * | 2008-02-27 | 2009-11-26 | Jsm Healthcare Inc | Apparatus and method for analyzing urine components in toilet in real-time by using miniature atr infrared spectroscopy |
| KR100943095B1 (en) * | 2008-02-27 | 2010-02-18 | 제이에스엠헬스케어 주식회사 | The apparatus and method for real time analyzing components of urine in toilet by using minature atr infrared spectroscopy |
| JP2019534453A (en) * | 2016-10-19 | 2019-11-28 | ゼネラル・エレクトリック・カンパニイ | Apparatus and method for evanescent waveguide sensing |
| CN107271366A (en) * | 2017-06-28 | 2017-10-20 | 中南民族大学 | Detect colorimetric bottle/pipe of nitrophenol |
| CN107271366B (en) * | 2017-06-28 | 2020-01-17 | 中南民族大学 | Colorimetric bottle/tube for detecting nitrophenol |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2701740B2 (en) | 1998-01-21 |
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