JPS626151A - Ion selective electrode - Google Patents
Ion selective electrodeInfo
- Publication number
- JPS626151A JPS626151A JP60145601A JP14560185A JPS626151A JP S626151 A JPS626151 A JP S626151A JP 60145601 A JP60145601 A JP 60145601A JP 14560185 A JP14560185 A JP 14560185A JP S626151 A JPS626151 A JP S626151A
- Authority
- JP
- Japan
- Prior art keywords
- hollow tube
- ion
- stem
- selective
- selective electrode
- 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
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は溶液中に浸漬して、溶液中の特定のイオン濃度
を測定するイオン選択性電極の構造に関するものである
。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the structure of an ion-selective electrode that is immersed in a solution to measure the concentration of a specific ion in the solution.
従来の技術
従来のイオン選択性電極では第２図に示すように中空管
１の一端にイオン選択性感能膜２が取り付けられ、中空
管１の中には内部溶液３があり、この中に電極４が浸せ
きされ、中空管１の他端より電極リード端子６が取り出
され、中空管１は封止されていた。2. Prior Art In a conventional ion-selective electrode, an ion-selective sensitive membrane 2 is attached to one end of a hollow tube 1, as shown in FIG. The electrode 4 was immersed in the tube, the electrode lead terminal 6 was taken out from the other end of the hollow tube 1, and the hollow tube 1 was sealed.
発明が解決しようとする問題点
１このような従来のイオン選択性電極では、イオ
ン濃度を測定しようとする被検液の温度が高い場合、中
空管の中の内部溶液及び空気が膨張し、内圧が高くなり
、イオン選択性感能膜が破壊してしまうという問題があ
った。The problem that the invention aims to solve
1 In such conventional ion-selective electrodes, when the temperature of the sample liquid whose ion concentration is to be measured is high, the internal solution and air in the hollow tube expand, the internal pressure increases, and the ion-selective sensitivity decreases. There was a problem that the Noh membrane would be destroyed.
本発明は、このような測定条件の場合にも、中空管の内
圧が高くならずに、破壊を防止できるイオン選択性電極
を提供することを目的としている。An object of the present invention is to provide an ion-selective electrode that can prevent destruction without increasing the internal pressure of the hollow tube even under such measurement conditions.
問題点を解決するための手段
本発明は上記問題点を解決するため、イオン選択性感能
膜とこれを一端に収納する中空管ムと、中空管ムに収納
された内部溶液と、中空管ムに挿入された電極を支える
ステムと、ステムと中空管人を封止し、内部液が外部に
漏れるのを防止するパツキンと、中空管ムと共にパツキ
ンを押え中空管人を封止し、気体を通す穴を持つ中空管
Ｂとにより構成されたものである。Means for Solving the Problems In order to solve the above problems, the present invention provides an ion-selective sensitive membrane, a hollow tube housing the membrane at one end, an internal solution housed in the hollow tube, and an ion-selective sensitive membrane. A stem that supports the electrode inserted into the hollow tube, a gasket that seals the stem and the hollow tube to prevent the internal liquid from leaking to the outside, and a gasket that holds the gasket together with the hollow tube and holds the hollow tube. A hollow tube B is sealed and has a hole through which gas passes.
作用
本発明は上記の構成により、中空管ムはパツキン、中空
管Ｂ、ステムの３者により封止される。Operation According to the above-described structure of the present invention, the hollow tube is sealed by the packing, the hollow tube B, and the stem.
測定条件が高温の場合は中空管ムの内圧が高くなるとス
テムは上昇し、中空管Ｂの穴から空気が排出され、中空
管ムの内圧が異常に高くなるのを防止し、再び低温に戻
ると中空管ムの内圧が負圧となり、中空管Ｂの穴から空
気が流れ込みステムは下降する。以上のように測定温度
条件が変動しても中空管ムに加わる内外圧差を小さくで
きるためイオン選択性感能膜に強い圧力が加わりにくく
広い温度範囲での使用が可能となる。When the measurement condition is high temperature, the stem will rise as the internal pressure of the hollow tube increases, and air will be discharged from the hole in the hollow tube B. This will prevent the internal pressure of the hollow tube from becoming abnormally high, and the stem will rise again. When the temperature returns to low temperature, the internal pressure of the hollow tube B becomes negative, air flows in from the hole in the hollow tube B, and the stem descends. As described above, even if the measurement temperature conditions fluctuate, the difference in pressure between the inside and outside of the hollow tube can be reduced, making it difficult for strong pressure to be applied to the ion-selective sensitive membrane, making it possible to use it over a wide temperature range.
実施例
第１図は本発明のイオン選択性電極の一実施例を示すも
のである。６は中空管人、７は中空管Ｂで穴８を備えて
おりネジ９により中空管ムロにネジ込まれている。１ｏ
はパツキンで、ステム１１を保持すると同時に内部液１
２を封止する。１３はイオン選択性感能膜である。Embodiment FIG. 1 shows an embodiment of the ion-selective electrode of the present invention. 6 is a hollow tube, and 7 is a hollow tube B having a hole 8, which is screwed into the hollow tube by a screw 9. 1o
is a packing that holds the stem 11 and simultaneously releases the internal fluid 1.
Seal 2. 13 is an ion-selective sensitive membrane.
中空管ムロの一端を封止するように取シ付けられたイオ
ン選択性感能膜１３を高温の被検液１４に浸せきして被
検液１４中の特定イオンの濃度を測定する場合、中空管
五〇内部の内部液１２、空気１６は加熱されて膨張し、
中空管ムロの内圧が高くなり、パツキン１６とステム１
１との摩擦力以上になると電極１７と一体のステム１１
は上昇し、空洞１８中の空気は穴８によυ外へ排出され
、中空管ムロの内圧の上昇は抑制される。被検液１４の
温度が更に高い場合は、ステム１１は更に上昇し、ステ
ム１１下部の突起１８は中空管ムロの突起１９に接触し
て停止する。イオン選択性電極１３を再び室温状態に戻
すと中空管ムロの内圧は低くなり、ステム１１は穴８か
ら空洞１８に流れ込む大気の圧力により下降する。この
ように被検液１４あるいは周囲の温度に応じてステム１
１が上下する構造とすることにより、中空管ムロの内部
圧力と外部圧力との差を軽減し、広い温度範囲で使用し
てもイオン選択性感能膜１３に大きな圧力が加わらない
ようにすることが可能である。尚、穴８は第１図におい
ては異物が入り込まないような小さな寸法のものとした
が、この穴には液体等が透過せず、気体のみが透過する
ようなフィルタを取り付けてもよい。When measuring the concentration of specific ions in the test liquid 14 by immersing the ion-selective sensitive membrane 13 attached to seal one end of the hollow tube into the high-temperature test liquid 14, The internal liquid 12 and air 16 inside the empty tube 50 are heated and expanded,
The internal pressure of the hollow tube Muro increases, and the packing 16 and stem 1
When the frictional force with 1 is exceeded, the stem 11 integrated with the electrode 17
rises, the air in the cavity 18 is discharged to the outside through the hole 8, and the rise in the internal pressure of the hollow tube is suppressed. When the temperature of the test liquid 14 is higher, the stem 11 rises further, and the protrusion 18 at the bottom of the stem 11 comes into contact with the protrusion 19 of the hollow tube and stops. When the ion-selective electrode 13 is brought back to room temperature, the internal pressure of the hollow tube becomes low, and the stem 11 is lowered by the pressure of the atmosphere flowing into the cavity 18 from the hole 8. In this way, the temperature of the stem 1 varies depending on the temperature of the test liquid 14 or the surrounding temperature.
1 moves up and down, this reduces the difference between the internal pressure and external pressure of the hollow tube, and prevents large pressure from being applied to the ion-selective sensitive membrane 13 even when used in a wide temperature range. Is possible. Although the hole 8 in FIG. 1 has a small size to prevent foreign matter from entering, a filter may be attached to this hole so that only gas and not liquid can pass therethrough.
発明の効果
以上のように、本発明によれば極めて簡単な構造により
、耐熱性に優れたイオン選択性電極が得られる。Effects of the Invention As described above, according to the present invention, an ion-selective electrode with excellent heat resistance can be obtained with an extremely simple structure.
第１図は本発明の一実施例におけるイオン選択性電極を
示す断面図、第２図は従来のイオン選択性電極を示す断
面図である。
６・・・・・・中空管ム、７・・・・・・中空管Ｂ、ｓ
・・・・・・穴、１１・・・・・ステム、１２・・・・
・・内部液、１３・・・・・・イオン選択性感能膜、１
６・・・・・・パツキン、１７・・・・・・電極。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
イオ刈ｉ択・ト生懲能膜
第２図
電ｔシソードＳ−＋
１中空管
４覧極
３、内部溶、液FIG. 1 is a cross-sectional view showing an ion-selective electrode according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a conventional ion-selective electrode. 6...Hollow tube M, 7...Hollow tube B, s
...hole, 11 ... stem, 12 ...
...Internal liquid, 13...Ion-selective sensitive membrane, 1
6...Patzkin, 17...Electrode. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure Io-kari i-choice/to-biodiscipline membrane Figure 2 Electron t Thesword S-+ 1 Hollow tube 4 Sight pole 3 Internal solution, liquid
Claims (1)
管と、前記第１の中空管に収納された内部溶液と、前記
第１の中空管に挿入された電極を支えるステムと、前記
ステムと前記第１の中空管を封止し、内部液が外部に漏
れるのを防止するパッキンと、前記第１の中空管と共に
前記パッキンを押え前記第１の中空管を封止し、気体を
通す穴を持つ第２の中空管とにより構成されるイオン選
択性電極。An ion-selective sensitive membrane, a first hollow tube housing the membrane at one end, an internal solution housed in the first hollow tube, and a stem supporting an electrode inserted into the first hollow tube. a packing that seals the stem and the first hollow tube to prevent the internal liquid from leaking to the outside; and a packing that holds the packing together with the first hollow tube and closes the first hollow tube. a second hollow tube that is sealed and has a hole through which gas can pass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60145601A JPS626151A (en) | 1985-07-02 | 1985-07-02 | Ion selective electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60145601A JPS626151A (en) | 1985-07-02 | 1985-07-02 | Ion selective electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS626151A true JPS626151A (en) | 1987-01-13 |
Family
ID=15388829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60145601A Pending JPS626151A (en) | 1985-07-02 | 1985-07-02 | Ion selective electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS626151A (en) |
-
1985
- 1985-07-02 JP JP60145601A patent/JPS626151A/en active Pending
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