JPS62112046A - Ion concentration measuring instrument - Google Patents

Abstract

PURPOSE:To make measurement of an ion concn. by forming the sensitive part of an electrode body to a spherical surface shape, forming a sample case into the shape conforming to the spherical surface thereof and forming a slight space therebetween. CONSTITUTION:The electrode body 10 is constituted by independently boring plural electrode material housing holes 12, 13 to the top end of a base body 11 consisting of a high-polymer material in the axial direction, packing an ion sensitive high-polymer material into one hole 12 and a reference electrode material 15 into the other hole 13 and shaping an end face 16 by machining, etc. to the spherical surface. The sample S in the case 20 is held in place between the end face of the electrode body 10 and the wall surface in the recess of the case 20 and is so spread like a film as to cover the end face of the electrode body and is uniformly stuck to the electrode materials 14, 15 when the sensitive surface of the electrode body 10 is fitted into the recess 21 of the case 20. The inter-electrode potential difference proportional to the ion concn. in the specimen is thereby generated between the ion sensitive material 14 and the reference electrode material 15.

Description

【発明の詳細な説明】 イ　産業上の利用分野 本発明は、イオン濃度測定装置、より詳しくはイオン濃
度測定電極体と試料容器の形状構造に関する。DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to an ion concentration measuring device, and more particularly to the shape and structure of an ion concentration measuring electrode body and a sample container.

口、従来技術 血液や尿等の生体試料中の電解質の測定は、ナトリウム
、カリウム、塩素等に感応するイオン選択性電極体を試
料に浸漬することにより行なわれるため、比較的多情の
試料を必要とするという問題があった。Conventional technology The measurement of electrolytes in biological samples such as blood and urine is performed by immersing an ion-selective electrode body sensitive to sodium, potassium, chlorine, etc. into the sample, which requires a relatively sensitive sample. There was a problem.

ハ、目的 本発明はこのような問題に鑑みてなされたものであって
、その目的とするところは可及的に少ない量の試料によ
りイオン濃度を測定することができる新規なイオン濃度
測定装置を提供することにある。C. Purpose The present invention was made in view of these problems, and its purpose is to provide a novel ion concentration measuring device that can measure ion concentration using as small a sample as possible. It is about providing.

二０発明の概要 すなわち、本発明が特徴とするところは、電極体の感応
部分を球面状とする一方、試料容器をこの球面に符合す
る形状として両者間に微小な間隙を形成するようにした
点にある。20 Summary of the Invention In other words, the present invention is characterized in that the sensitive part of the electrode body is spherical, and the sample container is shaped to match this spherical surface, with a minute gap formed between the two. At the point.

ホ、構成 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。E. Structure The present invention will now be described in detail based on illustrated embodiments.

第１図は、本発明の一実施例を示すものであって、図中
符号１０は、電極体で、高分子材料からなる基体１１の
先端部に軸方向に複数の電極物質収容孔１２．１３を独
ヴさせて穿設して、一方の孔１２にイオン感応性高分子
物質１４を、他方の孔１３に比較電極物質１５を充填し
、端面１６を切削等により球面となるように整形して構
成されている。なお、図中符号１７．１８は、一端が電
極物質１４．１５に接触するリード線を示す。FIG. 1 shows an embodiment of the present invention, in which reference numeral 10 denotes an electrode body, which has a plurality of electrode material accommodation holes 12 . One hole 12 is filled with an ion-sensitive polymer material 14, the other hole 13 is filled with a reference electrode material 15, and the end surface 16 is shaped into a spherical surface by cutting or the like. It is configured as follows. Note that reference numerals 17 and 18 in the figure indicate lead wires whose one end is in contact with the electrode material 14 and 15.

第２図は、試料容器２０の一実施例を示すものであって
、電極体１０の端面の形状に一致する凹部２１を形成し
て試料を収容するように構成されている。FIG. 2 shows an embodiment of the sample container 20, which is configured to form a recess 21 that matches the shape of the end surface of the electrode body 10 to accommodate the sample.

この実施例において、試料容器２０に試料Ｓを滴下して
（第３図イ）、Ｆ方から電極体１０の感応面を容器２０
の凹部２１に嵌め込むと、容器２０内の試料Ｓは、電極
体１０の端面と容器２０の四部壁面に挟まれて電極体端
面を覆うように膜状に押拡げられて電極物質１４．１５
（第１図）に均一に付着する（回図口）。これにより、
イオン感応物質１４と比較電極物質１５の間に検体中の
イオン濃度に比例した電極間電位差が発生する。In this example, the sample S is dropped into the sample container 20 (FIG. 3A), and the sensitive surface of the electrode body 10 is inserted into the container 20 from the direction F.
When the sample S is inserted into the recess 21 of the container 20, the sample S in the container 20 is sandwiched between the end surface of the electrode body 10 and the four walls of the container 20, and is expanded into a film to cover the end surface of the electrode body, thereby forming the electrode material 14.15.
(Figure 1) to adhere uniformly (circuit opening). This results in
An interelectrode potential difference proportional to the ion concentration in the sample is generated between the ion sensitive material 14 and the reference electrode material 15.

第４図は、本発明の第２の実施例を示すものであって、
高分子材料からなる基体１１の先端部に軸方向に複数の
電極物質収容孔１２．１３を独立させて穿設して、一方
の孔１２にイオン感応性高分子物質１４を、他方の孔１
３に比較電極物質１５を充填し、端面を切削等によりの
感応面側を椀状に加面して試料受部１９を形成したもの
である。FIG. 4 shows a second embodiment of the present invention,
A plurality of electrode material accommodation holes 12 and 13 are formed independently in the axial direction at the tip of the base body 11 made of a polymer material, and the ion-sensitive polymer material 14 is placed in one hole 12 and the ion-sensitive polymer material 14 is placed in the other hole 1.
3 is filled with a reference electrode material 15, and the sensitive surface side is shaped into a bowl shape by cutting the end face to form a sample receiving part 19.

この実施例によれば、電極体の感応面が上方となるよう
に載置して試料受部１９に試料Ｓを滴下し、これの上方
から試料受部１９の形状に一致する凸状体２２を押付る
と１両者によって挟まれた間隙に沿って試料Ｓが拡がっ
て感応面を覆うことになる。According to this embodiment, the electrode body is placed with the sensitive surface facing upward, and the sample S is dropped onto the sample receiving part 19, and from above the convex body 22 which matches the shape of the sample receiving part 19 is placed. When pressed, the sample S spreads along the gap between the two and covers the sensitive surface.

なお、ｌ：述した実施例においては、基体に２種類の電
極物質を収容するものに例を採って説明したが、３種類
以」二の電極物質を収容しても同様の作用を奏すること
は明らかである。In addition, in the above-mentioned embodiments, an example was explained in which two types of electrode materials were housed in the base, but the same effect can be achieved even if three or more types of electrode substances are housed. is clear.

へ　効果 以丘、説明したように本発明によれば、電極体の感応面
側端部を球面状に形成する一方、試料容器をこの球面と
一致する形状の四部となるように形成したので、電極感
応面を覆うように試料を膜状に延長させることができて
微小量の試料によりイオン濃度を測定することができる
。また、試料容器及び電極体の感応面が共に球面状に形
成されて滑らかな表面を持つため、付着した試料を極め
て簡単に洗い流すことができる。As explained above, according to the present invention, the end of the electrode body on the sensitive surface side is formed into a spherical shape, and the sample container is formed into four parts having a shape that matches this spherical surface. The sample can be extended like a membrane to cover the electrode sensitive surface, and the ion concentration can be measured using a minute amount of sample. Further, since the sensitive surfaces of the sample container and the electrode body are both formed into spherical shapes and have smooth surfaces, attached samples can be washed away extremely easily.

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

第１図（イ）（ロ）はそれぞれ本発明の一実施例を示す
電極体の断面図と正面図、第２図は同と装置に使用する
試料容器の断面図、第３図は同上ＪＪ置の使用状態を示
す説明図、及び第４図は本発明の他の実施例を示す断面
図である。 ｌＯ・・・・電極体　　　１１・・・・基体１２．１３
・・・・電極物質収容孔 １４．１５・・・・電極物質 ２０・・・・試料容器Figures 1 (a) and (b) are a cross-sectional view and a front view of an electrode body showing one embodiment of the present invention, Figure 2 is a cross-sectional view of a sample container used in the same device, and Figure 3 is a JJ same as above. FIG. 4 is a cross-sectional view showing another embodiment of the present invention. lO...Electrode body 11...Base 12.13
... Electrode material accommodation hole 14.15 ... Electrode material 20 ... Sample container

Claims (1)

【特許請求の範囲】[Claims] イオン感応物質と比較電極物質を基体端部に収容して感
応面側を球面状に形成してなる電極体と、前記電極体の
端面形状に一致する凹部を形成してなる試料容器を備え
てなるイオン濃度測定装置。An electrode body in which an ion-sensitive substance and a reference electrode substance are accommodated at the end of a base body and a sensitive surface side is formed into a spherical shape, and a sample container in which a recessed part is formed to match the shape of the end face of the electrode body. An ion concentration measuring device.