JPH04190152A - Ion electrode - Google Patents
Ion electrodeInfo
- Publication number
- JPH04190152A JPH04190152A JP2319893A JP31989390A JPH04190152A JP H04190152 A JPH04190152 A JP H04190152A JP 2319893 A JP2319893 A JP 2319893A JP 31989390 A JP31989390 A JP 31989390A JP H04190152 A JPH04190152 A JP H04190152A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- liquid
- internal
- internal liquid
- ion
- 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
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 239000012528 membrane Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000003792 electrolyte Substances 0.000 claims abstract description 6
- 239000011800 void material Substances 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 abstract description 20
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 11
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 7
- 229920000742 Cotton Polymers 0.000 abstract description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 abstract description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract description 2
- 239000001103 potassium chloride Substances 0.000 abstract description 2
- 235000011164 potassium chloride Nutrition 0.000 abstract description 2
- 239000011780 sodium chloride Substances 0.000 abstract description 2
- 229910021607 Silver chloride Inorganic materials 0.000 abstract 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- -1 chlorine ions Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
この発明は、イオン電極に関する。さらに詳しくは、イ
オン感応膜やガス透過性隔膜を有して戸るイオン電極に
関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to an ion electrode. More specifically, the present invention relates to an ion electrode having an ion-sensitive membrane or a gas-permeable diaphragm.
（ロ）従来の技術
従来から、ナトリウム、カリウム、塩素イオン等や炭酸
ガス成分等の電解質成分を測定する装置として、イオン
電極法を利用したものが知られている。そして、ことに
、試料液と接触しうるイオン感応膜及び／又はガス透過
性膜を張設した液密の空隙部内に所定の内部液を貯留し
かつ内部極を挿設したイオン電極が知られている。(B) Prior Art Conventionally, apparatuses utilizing the ion electrode method have been known as devices for measuring electrolyte components such as sodium, potassium, chloride ions, and carbon dioxide components. In particular, ion electrodes are known in which a predetermined internal liquid is stored in a liquid-tight cavity in which an ion-sensitive membrane and/or a gas-permeable membrane that can come into contact with a sample liquid is stretched, and an internal electrode is inserted therein. ing.
かかる従来のイオン電極において、内部液を上記空隙部
内に液密に保持するために、空隙部は分割可能な電極筒
や電極ブロックを組合わせて構成され、ことにこれらを
Ｏリングを介して密閉したり、エボキノ系接着剤等のノ
ール材を介して封止した構造が採用されている。In such conventional ion electrodes, in order to liquid-tightly hold the internal liquid within the cavity, the cavity is constructed by combining a separable electrode cylinder and an electrode block, and in particular, these are sealed via an O-ring. Or, a structure is adopted in which it is sealed with a nol material such as Evokino adhesive.
かかる従来のイオン電極の具体例を第２図に示す。図に
示すイオン電極は、塩素イオン測定電極を示すものあり
、分割可能な電極本体４．７と、リード線接続部２をＯ
−リング３で一体化し、かつ試料フロー流路９に接する
塩素イオン感応ＭＬ８を備えることにより、内部に円筒
状の第１空隙部１１とその周囲に位置する第２空隙部１
３が液密に設定されてなる。そして、これら第１空隙部
１ｌと第２空隙部１３内には内部液６が貯留されており
、第１空隙部ｌｌ内にはＡｇ／ＡｇＣ１からなる内部極
５が挿設されリード線１に接続されている。A specific example of such a conventional ion electrode is shown in FIG. The ion electrode shown in the figure is a chloride ion measuring electrode, and includes a separable electrode body 4.7 and a lead wire connection part 2.
- By providing a chlorine ion sensitive ML 8 integrated with the ring 3 and in contact with the sample flow channel 9, a cylindrical first cavity 11 inside and a second cavity 1 located around it
3 is set to be liquid-tight. An internal liquid 6 is stored in the first cavity 1l and the second cavity 13, and an internal pole 5 made of Ag/AgC1 is inserted into the first cavity 11 and connected to the lead wire 1. It is connected.
かかる構成において、上記第２空隙部１３は第１空隙部
１１への内部液の補給槽として作用し、通孔１２によっ
て接続されている。In this configuration, the second cavity 13 functions as a replenishment tank for supplying the internal liquid to the first cavity 11 and is connected by the through hole 12 .
（ハ）発明が解決しようとする課題
しかしながら、上記従来のごとき内部液密閉型のイオン
電極においては、０−リング等による密閉が不完全であ
っ１こり、不適当戸取扱いによって、貯留された内部液
か漏出、流出、蒸発等によって減少し、その結果第３図
（イ）に示されるように液面が低下して内部極５とのコ
ンタクトがとれずに電極として機能しなくなる場合があ
った。また、内部液の表面張力のために、第２空隙部１
３から第１空隙部１１への内部液の補充が円滑になされ
ず、第３図（ロ）に示すように、第１空隙部ｌｌ内の液
面が低下してＩＩ極として機能しなくなる場合があった
。(c) Problems to be Solved by the Invention However, in the above-mentioned conventional ion electrode of the internal liquid sealed type, the sealing with the O-ring etc. is incomplete, and the internal liquid may accumulate due to improper handling. The liquid decreased due to leakage, outflow, evaporation, etc., and as a result, as shown in Figure 3 (a), the liquid level dropped and it was not possible to make contact with the internal electrode 5, causing it to no longer function as an electrode. . Also, due to the surface tension of the internal liquid, the second cavity 1
When the internal liquid is not smoothly replenished from 3 to the first cavity 11, and as shown in FIG. was there.
この発明は、かかる状況下なされたものであり、ことに
、内部液量が減少した場合にも悪影響を受は難くより長
期間の使用に耐えることができるイオン電極を提供しよ
うとするものである。This invention was made under such circumstances, and particularly aims to provide an ion electrode that is less likely to be adversely affected even when the internal liquid volume decreases and can withstand use for a longer period of time. .
（ニ）課題を解決するための手段
かくしてこの発明によれば、試料液と接触しうるイオン
感応膜及び／又はガス透過性膜を備えた液密の空隙部内
に内部液を貯留すると共に内部極を挿設してなる電解質
測定電極系からなり、上記空隙部内に毛管現象によって
内部液を保持しうる液保持性材を充填してなるイオン電
極が提供される。(d) Means for Solving the Problems Thus, according to the present invention, an internal liquid is stored in a liquid-tight cavity provided with an ion-sensitive membrane and/or a gas-permeable membrane that can come into contact with a sample liquid, and an internal electrode is There is provided an ion electrode consisting of an electrolyte measuring electrode system having an electrolyte measuring electrode system inserted therein, and a liquid retaining material capable of retaining the internal liquid being filled in the cavity by capillary action.
この発明は、前記課題を解決すべく、内部液を貯留する
空隙部内に毛管現象によって当該内部液を保持しうる液
保持性材を充填するという手段を講じたものである。In order to solve the above-mentioned problem, the present invention takes a measure of filling a cavity in which the internal liquid is stored with a liquid-retaining material capable of retaining the internal liquid by capillary action.
かかる液保持性材としては化学的に安定でかつ毛管現象
により液体を自己保持しろる種々の材料が挙げられ、例
えば、脱脂綿、ガラスウール等の水との濡れ性に優れた
！＆維材が適している。但し、比較的濡れ性の低い各種
合成繊維ウールも、内部液へ非イオン界面活性剤を少量
添加することにより同様に適用することが可能である。Such liquid-retentive materials include various materials that are chemically stable and self-retain liquids through capillary action, such as absorbent cotton, glass wool, etc., which have excellent wettability with water! & fiber materials are suitable. However, various synthetic fiber wools with relatively low wettability can be similarly applied by adding a small amount of nonionic surfactant to the internal liquid.
なお、上記液保持性材の充填は、空隙部内全体に行われ
ていてもよく、その一部になされていてもよい。また、
空１１Ｊ１部は前述のごとく、２以上に分かれて一方か
ら他方へ内部液を補給しうるよう構成されていてもよい
。但し、液保持性材の充填は、イオン感応膜やガス透過
性膜と内部極との間に少なくとも介在し、内部液をこれ
らの間で安定に保持できるよう行うのが適している。Note that the liquid-retentive material may be filled in the entire cavity, or may be filled in only a part of the cavity. Also,
As described above, the empty part 11J may be divided into two or more parts and configured to be able to replenish the internal liquid from one part to the other. However, it is suitable that the liquid-retentive material is filled so that it is at least interposed between the ion-sensitive membrane or gas-permeable membrane and the internal electrode so that the internal liquid can be stably held between them.
（ホ）作用
内部液が貯留されん空隙部内に充填されに液保持性材は
、内部液量が減少した場合においても必要量の内部極を
内部極とイオン感応膜やガス透過性膜との間に保持する
よう作用する。(E) Function: The internal liquid is not stored.The liquid-retentive material filled in the void is able to maintain the necessary amount of internal electrode between the internal electrode and the ion-sensitive membrane or gas-permeable membrane even when the internal liquid volume decreases. It acts to hold it in between.
（へ）実施例
以下、添付図面に基づいてこの発明を説明するが、これ
によりこの発明は限定されるものではない。(F) EXAMPLES The present invention will be described below based on the accompanying drawings, but the present invention is not limited thereby.
墓１図は、この発明のイオン電極の一実施例の塩素イオ
ン測定電極を示すものである。このようにこの発明の塩
素イオン測定電極は、試料フロー流路９に接する塩素イ
オン感応ＩＥ８と、０−リング３で封止されたリード線
接続部２を備え、これらにより内部に円筒状の第１空隙
部１１とその周囲に位置する第２空隙部１３が構成され
ている。Figure 1 shows a chlorine ion measuring electrode which is an embodiment of the ion electrode of the present invention. As described above, the chloride ion measuring electrode of the present invention includes the chloride ion sensitive IE 8 in contact with the sample flow channel 9 and the lead wire connection portion 2 sealed with the O-ring 3, and these lead to a cylindrical tube inside. A first cavity 11 and a second cavity 13 located around the first cavity 11 are configured.
これらの第１及び第２空隙部１１１１３は、内部の２カ
所に穿設された通孔１２によって液絡されており、第１
空隙部１１にはＡｇ／ＡｇＣ１からなる内部極５か挿設
されてなる。、なお、内部極Ｓは接続部２を介して外部
のリード線ｌに接続されている。These first and second void portions 11113 are connected to each other by through holes 12 bored at two locations inside the first and second void portions 11113.
An internal pole 5 made of Ag/AgC1 is inserted into the cavity 11. Note that the internal pole S is connected to an external lead wire l via a connecting portion 2.
そして、上記第１空隙部１１及び第２空隙部１３内には
、全体に亙って塩化カリウム、塩化ナトリウムなどの電
解質からなる内部液６が液密に貯留されていると共に、
脱脂綿１０が充填されてなる。In the first cavity 11 and the second cavity 13, an internal liquid 6 made of an electrolyte such as potassium chloride or sodium chloride is stored in a liquid-tight manner throughout.
It is filled with absorbent cotton 10.
かかるこの発明の塩素イオン測定電極を継続的に使用し
たところ、第１空隙部ｌｌ内の内部液量が減少しても、
通孔１２を通じて第２空隙部１３から毛管現象によって
第１空隙部１１へ内部液が円滑に補給されると共に、長
期間に亙って、内部極５と塩素イオン感応膜８との間を
コンタクトする内部液の保持層が維持され、とくに内部
液量が第３図（イ）や（ロ）の程度の量に減少した際に
も、塩素イオンに対する充分な電極応答が得られること
が判明し几。When the chlorine ion measuring electrode of the present invention is continuously used, even if the internal liquid amount in the first cavity ll decreases,
Internal liquid is smoothly replenished from the second cavity 13 through the through hole 12 to the first cavity 11 by capillary action, and contact is maintained between the internal electrode 5 and the chloride ion sensitive membrane 8 for a long period of time. It has been found that the retention layer of the internal liquid is maintained, and a sufficient electrode response to chlorine ions can be obtained, especially when the internal liquid volume is reduced to the amount shown in Figure 3 (a) or (b).几.
そして、かかる効果は、塩素イオン感応膜に代えて、炭
酸ガス透過性膜を用いた炭酸ガス濃度測定電極において
も同様に確認された。This effect was similarly confirmed in a carbon dioxide concentration measuring electrode using a carbon dioxide gas permeable membrane instead of a chloride ion sensitive membrane.
（ト）発明の効果
この発明のイオン電極によれば、内部液の減少により生
ヒうるｉ［極応答性上のトラブルを解消することができ
、内部液の有効利用を図ることができる。(G) Effects of the Invention According to the ion electrode of the present invention, it is possible to solve the problem of polar response that can occur due to a decrease in the internal liquid, and it is possible to effectively utilize the internal liquid.
第１図は、この発明のイオン電極の一実施例を示す構成
説明図、第２図は従来例を示す１ｇ１図対応図、第３図
（イ）（ロ）は、各々従来のイオン電極での問題くを説
明する構成説明図である。
１・・・・リード線、２・・・・リード線接続部、３−
・−・０−リング、４．７・・・・電極本体、５・・・
・・内部極、６・・−内部液、８ ・・塩素イオン感応
膜、
９ ・試料フロー流路、１０・・・・脱脂綿、１１−
−・・第１空隙部、１２・−・−・通孔、１３・・・・
第２空隙部。
イー、；４−７・
第１図
第２図
第３図Fig. 1 is a configuration explanatory diagram showing one embodiment of the ion electrode of the present invention, Fig. 2 is a diagram corresponding to 1g1 showing a conventional example, and Figs. It is a configuration explanatory diagram illustrating the problem. 1...Lead wire, 2...Lead wire connection part, 3-
・-・0-ring, 4.7...electrode body, 5...
・・Internal electrode, 6・・Internal solution, 8・・Chlorine ion sensitive membrane, 9・Sample flow channel, 10・・Absorbent cotton, 11−
---First cavity, 12--Through hole, 13--
Second cavity. E,;4-7・Figure 1Figure 2Figure 3
Claims (1)
過性膜を備えた液密の空隙部内に内部液を貯留すると共
に内部極を挿設してなる電解質測定電極系からなり、 上記空隙部内に毛管現象によって内部液を保持しうる液
保持性材を充填してなるイオン電極。 ２、液密の空隙部が、内部極を挿入する第１空隙部と、
内部液を当該第１空隙部内へ補給しうる第２空隙部から
なる請求項１のイオン電極。[Claims] 1. An electrolyte measuring electrode in which an internal liquid is stored in a liquid-tight cavity provided with an ion-sensitive membrane and/or a gas-permeable membrane that can come into contact with a sample liquid, and an internal electrode is inserted therein. An ion electrode comprising a liquid retaining material capable of retaining an internal liquid by capillary action in the void. 2. A first cavity in which the liquid-tight cavity inserts the internal pole;
2. The ion electrode according to claim 1, further comprising a second cavity capable of replenishing the first cavity with an internal liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2319893A JPH04190152A (en) | 1990-11-22 | 1990-11-22 | Ion electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2319893A JPH04190152A (en) | 1990-11-22 | 1990-11-22 | Ion electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04190152A true JPH04190152A (en) | 1992-07-08 |
Family
ID=18115408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2319893A Pending JPH04190152A (en) | 1990-11-22 | 1990-11-22 | Ion electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04190152A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0646368U (en) * | 1992-11-21 | 1994-06-24 | 株式会社堀場製作所 | Flow type ion electrode |
| JP2007071792A (en) * | 2005-09-08 | 2007-03-22 | Dkk Toa Corp | Bubble removing method for electrode internal liquid, and electrochemical sensor |
-
1990
- 1990-11-22 JP JP2319893A patent/JPH04190152A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0646368U (en) * | 1992-11-21 | 1994-06-24 | 株式会社堀場製作所 | Flow type ion electrode |
| JP2007071792A (en) * | 2005-09-08 | 2007-03-22 | Dkk Toa Corp | Bubble removing method for electrode internal liquid, and electrochemical sensor |
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