JPH04301743A - Specimen container for optical analysis - Google Patents
Specimen container for optical analysisInfo
- Publication number
- JPH04301743A JPH04301743A JP9129591A JP9129591A JPH04301743A JP H04301743 A JPH04301743 A JP H04301743A JP 9129591 A JP9129591 A JP 9129591A JP 9129591 A JP9129591 A JP 9129591A JP H04301743 A JPH04301743 A JP H04301743A
- Authority
- JP
- Japan
- Prior art keywords
- specimen
- sample
- window
- piston member
- piston
- 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.)
- Withdrawn
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 25
- 238000004458 analytical method Methods 0.000 title claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 238000002835 absorbance Methods 0.000 description 14
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
Landscapes
- Optical Measuring Cells (AREA)
Abstract
Description
【産業上の利用分野】本発明は、流体を試料として光学
分析を行なうのに適した試料容器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sample container suitable for optical analysis using a fluid as a sample.
【０００１】0001
【従来の技術】液体や気体等を分光分析する場合には試
料を容器に収容して試料容器を挟むように発光手段と受
光手段を対向配設してなる装置を使用して行なわれる。
通常、この種の分析装置では、試料による最適な吸光度
は、０．３乃至１程度に設定されているため、試料に最
適な光路長を選択する必要がある。このため、光路長が
異なる複数種類の試料容器を用意しておき、試料の吸光
度に応じて適宜試料容器を選択することが行なわれてい
る。2. Description of the Related Art Spectroscopic analysis of liquids, gases, etc. is carried out using an apparatus in which a sample is placed in a container and a light-emitting means and a light-receiving means are arranged facing each other so as to sandwich the sample container. Normally, in this type of analyzer, the optimum absorbance of a sample is set to about 0.3 to 1, so it is necessary to select the optimum optical path length for the sample. For this reason, a plurality of types of sample containers having different optical path lengths are prepared, and an appropriate sample container is selected depending on the absorbance of the sample.
【０００２】0002
【発明が解決しようとする課題】しかしながら、試料容
器毎にその吸光度が異なるため、試料容器を交換した場
合にはバックグランドの校正を必要として分析作業が繁
雑になるという問題がある。However, since the absorbance differs depending on the sample container, there is a problem in that when the sample container is replaced, background calibration is required, which complicates the analysis work.
【０００３】0003
【課題を解決するための手段】このような問題を解消す
るために本発明においては、相対的に移動可能に構成さ
れたピストン部材とシリンダ部材のヘッド部と頂部にそ
れぞれ対向するように光学部材からなる窓を形成すると
ともに、前記ピストンに試料の注入排出を行なうための
開口を形成するようにした。[Means for Solving the Problems] In order to solve this problem, in the present invention, an optical member is provided so as to face the head portion and the top portion of the piston member and the cylinder member, respectively, which are configured to be movable relative to each other. In addition, an opening for injecting and discharging a sample is formed in the piston.
【０００４】0004
【作用】ピストン部材とシリンダ部材を相対的に移動さ
せることにより、窓間の光路長が連続的に変化するから
、試料に適した光路長を自由に設定することができる。
また試料容器としてバックグランドとなる部材は、窓を
構成する光学部材で、しかもこれらのピストンとシリン
ダとの距離に関わりなく光学部材の厚みは変化しない。
したがって、試料に適した光路長に変更されても登録し
ておいたバックグランドデータを有効に利用することが
できる。[Operation] By relatively moving the piston member and the cylinder member, the optical path length between the windows changes continuously, so it is possible to freely set the optical path length suitable for the sample. Further, the member serving as the background of the sample container is an optical member constituting the window, and the thickness of the optical member does not change regardless of the distance between the piston and the cylinder. Therefore, even if the optical path length is changed to a value suitable for the sample, the registered background data can be effectively used.
【０００５】[0005]
【実施例】そこで以下に本発明の詳細を図示した実施例
に基づいて説明する。図１は、本発明の一実施例を示す
ものであって、図中符号は、シリンダ部材で、シリンダ
ヘッドには通孔２が穿設され、ここに光透過材料からな
る壁３を固定枠４で気密的に取り付けて窓５が形成され
ている。固定枠４の近傍には図示しないサンプル源に連
通する通孔を兼ねた逆止弁６と排出口を兼ねた逆止弁７
が設けられている。１０は、ピストン部材で、ピストン
ヘッドには通孔１１が穿設され、ここに光透過部材から
なる壁１２を固定枠１３で気密的に取り付けて窓１４が
形成されている。 ピストン部材１０は、Ｏリング等
のシール部材１５を介装してシリンダ部材１に嵌挿され
ており、シリンダ部材１から延長されたガイド棒１６、
１６に案内されてシリンダ部材１に対して相対的に進退
するように構成されている。ピストン部材には、駆動ア
ーム１７が設けられており、モータ１８により直線運動
するようになっている。２０は、制御装置で、キーボー
ド２１から入力された光路長データに一致するようにピ
ストン部材１０を移動させたり、受光手段３０からの信
号が測光に最適な値となる位置までピストン部材１０を
移動させるようにプログラムされている。なお、図中符
号３１は発光手段を示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be explained below based on illustrated embodiments. FIG. 1 shows an embodiment of the present invention, and the reference numeral in the figure indicates a cylinder member, and the cylinder head has a through hole 2, through which a wall 3 made of a light-transmitting material is fixed to a frame. 4 is airtightly attached to form a window 5. Near the fixed frame 4 are a check valve 6 that also serves as a through hole communicating with a sample source (not shown) and a check valve 7 that also serves as a discharge port.
is provided. 10 is a piston member, and a through hole 11 is bored in the piston head, and a window 14 is formed by airtightly attaching a wall 12 made of a light transmitting member to the piston member with a fixed frame 13. The piston member 10 is fitted into the cylinder member 1 with a seal member 15 such as an O-ring interposed therebetween, and a guide rod 16 extending from the cylinder member 1,
It is configured to move forward and backward relative to the cylinder member 1 while being guided by the cylinder member 16. A drive arm 17 is provided on the piston member, and is configured to move linearly by a motor 18. Reference numeral 20 denotes a control device that moves the piston member 10 so as to match the optical path length data input from the keyboard 21, or moves the piston member 10 to a position where the signal from the light receiving means 30 has an optimal value for photometry. It is programmed to do so. Note that the reference numeral 31 in the figure indicates a light emitting means.
【０００６】この実施例において逆止弁６をサンプル源
に連通させ、キーボード２１から測定しようとする試料
に適した光路長データＬを入力すると、制御装置２０は
、ピストン部材１０をシリンダ部材１の窓５まで押込ん
で空気を排出させ、次いで設定されている光路長さとな
るまでピストン部材１０を後退させる。この後退の過程
で試料は逆止弁６からシリンダ室３２に吸入される。
設定された光路長Ｌが確保された段階で吸光度を測定す
ると、発光素子３１からの光は、ピストン部材１０の窓
１４からピストン室３２の試料を透過し、シリンダ部材
５から受光手段３０に入射する。受光手段３０により得
られた吸光度と予め測定しておいたシリンダ部材１、及
びピストン部材１０の窓５、１４自体の吸光度を相殺す
ることにより、試料自体の吸光度を得ることができる。In this embodiment, when the check valve 6 is connected to the sample source and the optical path length data L suitable for the sample to be measured is inputted from the keyboard 21, the control device 20 causes the piston member 10 to be connected to the cylinder member 1. The piston member 10 is pushed back to the window 5 to exhaust air, and then the piston member 10 is moved back until the set optical path length is reached. During this retraction process, the sample is sucked into the cylinder chamber 32 through the check valve 6. When the absorbance is measured after the set optical path length L is secured, the light from the light emitting element 31 passes through the sample in the piston chamber 32 through the window 14 of the piston member 10 and enters the light receiving means 30 from the cylinder member 5. do. The absorbance of the sample itself can be obtained by offsetting the absorbance obtained by the light receiving means 30 with the absorbance of the cylinder member 1 and the windows 5, 14 of the piston member 10, which have been measured in advance.
【０００７】１つの試料についての分析が終了すると、
制御装置２０は、ピストン部材１０を再びシリンダ部材
１に押込む。これによりシリンダ室３２に収容されてい
た試料は、逆止弁７から外部に排出される。なお、ピス
トン室３２の洗浄が必要な場合には逆止弁６に洗浄液タ
ンクを連通させて、ピストン部材１０を往復動させるこ
とにより、ピストン室３２の残留試料を外部に排出する
ことができる。[0007] When the analysis of one sample is completed,
The control device 20 pushes the piston member 10 into the cylinder member 1 again. As a result, the sample contained in the cylinder chamber 32 is discharged from the check valve 7 to the outside. Note that when the piston chamber 32 needs to be cleaned, the residual sample in the piston chamber 32 can be discharged to the outside by communicating the cleaning liquid tank with the check valve 6 and reciprocating the piston member 10.
【０００８】一方、試料の吸光度が不明である場合には
、吸光度の測定を行ないながらピストン部材１０を後退
させると、逆止弁６から試料がピストン室３２に流入す
るから、吸光がピストン部材１０の移動につれて徐々に
大きくなる。このようにして吸光の程度が測定に最適な
値となった段階で、制御装置２０はモータ１８を停止さ
せ、この時点における光路長Ｌ’を駆動パルス数等に基
づいて検出する。このようにして測定された吸光度と光
路長Ｌ’とにより試料の見掛けの吸光度を算出するとと
もに、予め求められている窓５、１４自体の吸光度を相
殺することにより試料自体の吸光度を得ることができる
。吸光度が異なる別の試料を分析する場合には、この試
料に適した光路長となるようにピストンを移動させ、試
料を注入して測定を行なう。この結果得られた測定デー
タから前回測定しておいたバックグランド分を差引くと
、試料についてのデータを得ることができる。いうまで
もなく、試料容器によりバックグランドとなる要素は、
ピストン部材１０とシリンダ部材１の窓１４、５を構成
している壁１２と壁３だけであるから、バックグランド
値は、シリンダ部材１とピストン部材１０の距離に関わ
りなく一定である。On the other hand, if the absorbance of the sample is unknown, if the piston member 10 is moved back while measuring the absorbance, the sample will flow into the piston chamber 32 from the check valve 6, so that the absorbed light will be absorbed by the piston member 10. gradually increases as it moves. When the degree of light absorption reaches the optimal value for measurement in this manner, the control device 20 stops the motor 18 and detects the optical path length L' at this point based on the number of drive pulses and the like. The apparent absorbance of the sample is calculated from the absorbance measured in this way and the optical path length L', and the absorbance of the sample itself can be obtained by offsetting the absorbance of the windows 5 and 14 themselves, which has been determined in advance. can. When analyzing another sample with a different absorbance, the piston is moved so that the optical path length is suitable for the sample, the sample is injected, and the measurement is performed. By subtracting the previously measured background from the measurement data obtained as a result, data regarding the sample can be obtained. Needless to say, background factors due to the sample container are
Since only the walls 12 and 3 constitute the piston member 10 and the windows 14 and 5 of the cylinder member 1, the background value is constant regardless of the distance between the cylinder member 1 and the piston member 10.
【０００９】なお、この実施例においてはピストンを移
動させるようにしているが、シリンダを移動させるよう
にしても同様の作用を奏することは明らかである。また
、この実施例においては光路長を駆動モータ１８の回転
数により設定するようにしているが、一定光路長となる
位置に位置検出手段を設けておき、位置検出手段からの
信号により光路長を制御したり、またゲージ部材により
位置決めするようにしても所望の光路長に正確に設定で
きることは明らかである。In this embodiment, the piston is moved, but it is clear that the same effect can be achieved even if the cylinder is moved. Further, in this embodiment, the optical path length is set by the rotation speed of the drive motor 18, but a position detection means is provided at a position where the optical path length is constant, and the optical path length is determined by a signal from the position detection means. It is clear that the desired optical path length can be accurately set by controlling or by positioning using a gauge member.
【００１０】0010
【発明の効果】以上説明したように本発明においては、
相対的に移動可能に構成されたピストン部材とシリンダ
部材のヘッド部と頂部にそれぞれ対向させて窓を形成す
るとともに、試料の注入排出を行なうための連通手段を
形成したので、シリンダ部材とピストン部材との距離を
変更することにより、光路長を連続的に変更することが
でき、しかも窓だけがバックグランドとなるから、試料
の種類に応じたセルの準備や、光路補正が不要となって
分析作業の能率を高めることができるばかりでなく、試
料容器がポンプ機能を備えているから、試料供給、排出
用のポンプを不要とすることができる。[Effects of the Invention] As explained above, in the present invention,
Windows are formed to face the heads and tops of the piston member and cylinder member, which are configured to be movable relative to each other, and a communication means for injecting and discharging the sample is formed. The optical path length can be changed continuously by changing the distance between Not only can work efficiency be improved, but since the sample container has a pump function, a pump for supplying and discharging the sample can be made unnecessary.
【図１】本発明の一実施例を示す装置の断面図である。FIG. 1 is a sectional view of an apparatus showing an embodiment of the present invention.
１ シリンダ部材 ２ 通孔 ３ 壁 ５ 窓 ６、７ 逆止弁 １０ ピストン部材 １１ 通孔 １２ 壁 １４ 窓 １５ シール部材 １６、１６ ガイド棒 １７ 駆動アーム １８ モータ ３０ 受光手段 ３１ 発光手段 1 Cylinder member 2 Through hole 3 Wall 5 Window 6, 7 Check valve 10 Piston member 11 Through hole 12 Wall 14 Window 15 Seal member 16, 16 Guide rod 17 Drive arm 18 Motor 30 Light receiving means 31. Light emitting means
Claims (1)
ン部材とシリンダ部材のヘッド部と頂部にそれぞれ対向
するように光学部材からなる窓を形成するとともに、前
記ピストンに試料の注入排出を行なうための開口を形成
してなる光学分析用試料容器。1. A window made of an optical member is formed so as to face the head portion and the top portion of a piston member and a cylinder member that are configured to be relatively movable, and for injecting and discharging a sample into the piston. A sample container for optical analysis formed with an opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9129591A JPH04301743A (en) | 1991-03-29 | 1991-03-29 | Specimen container for optical analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9129591A JPH04301743A (en) | 1991-03-29 | 1991-03-29 | Specimen container for optical analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04301743A true JPH04301743A (en) | 1992-10-26 |
Family
ID=14022481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9129591A Withdrawn JPH04301743A (en) | 1991-03-29 | 1991-03-29 | Specimen container for optical analysis |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04301743A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100664913B1 (en) * | 2005-11-24 | 2007-01-04 | 충북대학교 산학협력단 | Co2 gas measurement equipment having sample cell to adjust length |
| US8056400B2 (en) * | 2008-02-26 | 2011-11-15 | United States Of America As Represented By The Secretary Of The Navy | Method and apparatus for fluid sampling |
| JP2018128295A (en) * | 2017-02-07 | 2018-08-16 | 株式会社日立製作所 | Optical analyzer, optical analysis system, and optical analysis method |
| JP2020129010A (en) * | 2020-06-03 | 2020-08-27 | パイオニア株式会社 | Harvest determination device |
-
1991
- 1991-03-29 JP JP9129591A patent/JPH04301743A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100664913B1 (en) * | 2005-11-24 | 2007-01-04 | 충북대학교 산학협력단 | Co2 gas measurement equipment having sample cell to adjust length |
| US8056400B2 (en) * | 2008-02-26 | 2011-11-15 | United States Of America As Represented By The Secretary Of The Navy | Method and apparatus for fluid sampling |
| JP2018128295A (en) * | 2017-02-07 | 2018-08-16 | 株式会社日立製作所 | Optical analyzer, optical analysis system, and optical analysis method |
| US10663399B2 (en) | 2017-02-07 | 2020-05-26 | Hitachi, Ltd. | Optical analysis apparatus, optical analysis system, and optical analysis method |
| JP2020129010A (en) * | 2020-06-03 | 2020-08-27 | パイオニア株式会社 | Harvest determination device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980514 |