JPS6246825B2 - - Google Patents
Info
- Publication number
- JPS6246825B2 JPS6246825B2 JP55175450A JP17545080A JPS6246825B2 JP S6246825 B2 JPS6246825 B2 JP S6246825B2 JP 55175450 A JP55175450 A JP 55175450A JP 17545080 A JP17545080 A JP 17545080A JP S6246825 B2 JPS6246825 B2 JP S6246825B2
- Authority
- JP
- Japan
- Prior art keywords
- region
- diaphragm tube
- liquid
- cathode
- measured
- 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.)
- Expired
Links
- 239000007788 liquid Substances 0.000 claims description 30
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 29
- 239000000460 chlorine Substances 0.000 claims description 29
- 229910052801 chlorine Inorganic materials 0.000 claims description 29
- 230000005611 electricity Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 239000003792 electrolyte Substances 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 7
- 239000008151 electrolyte solution Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- GOMCKELMLXHYHH-UHFFFAOYSA-L dipotassium;phthalate Chemical compound [K+].[K+].[O-]C(=O)C1=CC=CC=C1C([O-])=O GOMCKELMLXHYHH-UHFFFAOYSA-L 0.000 claims description 3
- 238000000638 solvent extraction Methods 0.000 claims description 3
- 238000005868 electrolysis reaction Methods 0.000 claims description 2
- 238000000576 coating method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- NUIURNJTPRWVAP-UHFFFAOYSA-N 3,3'-Dimethylbenzidine Chemical compound C1=C(N)C(C)=CC(C=2C=C(C)C(N)=CC=2)=C1 NUIURNJTPRWVAP-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005660 chlorination reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- QNGVNLMMEQUVQK-UHFFFAOYSA-N 4-n,4-n-diethylbenzene-1,4-diamine Chemical compound CCN(CC)C1=CC=C(N)C=C1 QNGVNLMMEQUVQK-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 235000014214 soft drink Nutrition 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/42—Measuring deposition or liberation of materials from an electrolyte; Coulometry, i.e. measuring coulomb-equivalent of material in an electrolyte
- G01N27/423—Coulometry
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
【発明の詳細な説明】
本発明は、上下水道、工業用水および河川等に
おける残留塩素の濃度を測定する残留塩素測定方
法および測定装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a residual chlorine measuring method and a measuring device for measuring the concentration of residual chlorine in water and sewage systems, industrial water, rivers, etc.
水処理の１つとして、塩素処理は極めて重要な
役割を果しており、上水道における殺菌のための
塩素処理をはじめ、プール、下水放流水、清涼飲
料水用滅菌水、浴場、クリーニングから発電所、
工場、船舶等の冷却水に対する藻類、貝類の進入
防止やスライム防止等を目的とするものまで多く
の分野で広範囲に行なわれている。このような塩
素処理において、使用する塩素量の適正化を図る
一般的な方法として、処理後の残留塩素濃度を測
定して注入塩素量を調節する方法がある。而し
て、残留塩素測定法として従来から知られている
主な方法にジエチルパラフエニレンジアミン（以
下「DPD」と略す）法とオルトトリジン法があ
るが、前者はDPDが塩素によつて酸化されて赤
色を呈することから該赤色濃度を比色測定するこ
とにより残留塩素濃度を測定する方法であり、後
者はオルトトリジンが塩素の存在によつて黄色ホ
ロキノンを生成するので、該黄色濃度を比色測定
することにより残留塩素濃度を測定する方法であ
る。 As a type of water treatment, chlorination plays an extremely important role, including chlorination for disinfection in water supplies, swimming pools, sewage discharge water, sterilized water for soft drinks, baths, cleaning, power plants, etc.
It is widely used in many fields to prevent algae and shellfish from entering the cooling water of factories, ships, etc., and to prevent slime. In such chlorine treatment, a common method for optimizing the amount of chlorine used is to measure the residual chlorine concentration after treatment and adjust the amount of chlorine injected. The main methods conventionally known for measuring residual chlorine are the diethyl paraphenylene diamine (hereinafter abbreviated as "DPD") method and the orthotolidine method, but the former method is based on the fact that DPD is oxidized by chlorine. This method measures the residual chlorine concentration by colorimetrically measuring the red color concentration, since orthotolidine produces yellow holoquinone in the presence of chlorine. This method measures the residual chlorine concentration by
然し乍ら、上記従来例においては、発色した赤
色濃度若しくは黄色濃度を比色測定する比色法を
用いて残留塩素の定量を行なうため、被測定液を
くみあげて専用容器に入れ、試薬を添加して後反
応する時間を待ち、発色した液をカバーガラス等
の標準色と比較するといつた煩雑な作業と長い時
間とを必要としていた。 However, in the above conventional example, in order to quantify residual chlorine using a colorimetric method that measures the developed red or yellow concentration colorimetrically, the liquid to be measured is pumped up and placed in a special container, and a reagent is added. Waiting for post-reaction time and comparing the developed solution with the standard color of a cover glass, etc., requires complicated work and a long time.
本発明は、かかる欠点に鑑みてなされたもので
あり、その目的は、煩雑な作業を要することなく
簡単な作業で迅速に被測定液中の残留塩素濃度を
測定できる残留塩素の測定方法および測定装置を
提供するにある。 The present invention has been made in view of these drawbacks, and its purpose is to provide a residual chlorine measurement method and measurement method that can quickly measure the residual chlorine concentration in a liquid to be measured with simple work without requiring complicated work. We are in the process of providing equipment.
本発明の特徴は、被測定液中の残留塩素濃度を
測定する方法および装置において、電解セルを貫
通するように設けられた隔膜チユーブの外側に陽
極を配設すると共に該チユーブの内側に陰極と第
３電極を配設し、前記電解セル内の電解液が存在
する部分に相当する領域Ｂにおいて前記第３電極
を被覆すると共に該領域Ｂの上側の領域Ａ及び該
領域Ｂの下側の領域Ｃにおいて前記陰極を被覆
し、前記隔膜チユーブの中へ被測定液を導いて静
止させ、該被測定液へ前記隔膜チユーブを透過さ
せてKIを供給して前記被測定液に含まれる残留
塩素をI2に置換し、前記領域Ａ及びＣで被覆され
た陰極と前記領域Ｂで被覆された第３電極により
前記隔膜チユーブ内において電気分解される前記
被測定液の間仕切りをおこないながら前記I2に定
電位電気分解反応を生じさせ、その後、前記陰極
と陽極の間に流れる電気量を測定することによ
り、前記被測定液中の残留塩素を測定することに
ある。 A feature of the present invention is that, in a method and apparatus for measuring the residual chlorine concentration in a liquid to be measured, an anode is disposed outside a diaphragm tube provided to penetrate an electrolytic cell, and a cathode is disposed inside the tube. A third electrode is disposed, and covers the third electrode in a region B corresponding to a portion where an electrolytic solution exists in the electrolytic cell, and a region A above the region B and a region below the region B. In step C, the cathode is coated, the liquid to be measured is introduced into the diaphragm tube and kept stationary, and KI is supplied to the liquid to be measured through the diaphragm tube to remove residual chlorine contained in the liquid to be measured. I2 while partitioning the liquid to be electrolyzed in the diaphragm tube by the cathode covered with the regions A and C and the third electrode covered with the region B. The purpose is to measure residual chlorine in the liquid to be measured by causing a constant potential electrolysis reaction and then measuring the amount of electricity flowing between the cathode and the anode.
以下、本発明について図を用いて詳細に説明す
る。第１図は、本発明の実施例を示す構成説明図
である。同図において、吸入器１はピストン１１
とシリンダ１２から構成されており、シリンダ１
２の底部には所定の長さを有するイオン交換膜等
からなる隔膜チユーブ１３が接続されている。ま
た、電解セル２はガラス等でなる筒状部材２１、
該筒状部材２１の両端開口部を塞ぐとともに上記
隔膜チユーブ１３が中心部を貫通するように設け
られシリコーンゴム等でなる栓２２，２２′とで
構成されており、栓２２，２２′、筒状部材２
１、および隔膜チユーブ１３の一部とで形成され
る空間部にはKIとCH3COOHの溶液からなる電
解液２３が入れられるとともに該電解液２３に浸
漬されるようにしてPt若しくはAuからなる筒状
の陽極２４が設けられている。更に、栓２２，２
２′の中心部を貫通する隔膜チユーブ１３の中に
はPt線若しくはAu線からなるとともに所定部分
が塗料等で被覆された陰極２５および第３電極２
６が設けられており、陰極２５は電流計４および
スイツチ５を介して上記陽極２４および第３電極
２６と導線などで接続されている。更にまた、容
器６には被測定液７が入れられており、上記隔膜
チユーブ１３の先端部から被測定液７が吸引され
るようになつている。また、上記栓２２，２
２′、筒状部材２１、および隔膜チユーブ１３の
一部とで形成される空間部には、フタル酸カリウ
ムの結晶３１およびKIの結晶３２からなる混合
物３が上記電解液２３とともに入れられている。 Hereinafter, the present invention will be explained in detail using figures. FIG. 1 is a configuration explanatory diagram showing an embodiment of the present invention. In the figure, the inhaler 1 has a piston 11
and cylinder 12, cylinder 1
A diaphragm tube 13 made of an ion exchange membrane or the like having a predetermined length is connected to the bottom of the tube 2 . Further, the electrolytic cell 2 includes a cylindrical member 21 made of glass or the like,
The diaphragm tube 13 is provided so as to close the openings at both ends of the cylindrical member 21 and pass through the center thereof, and is composed of plugs 22, 22' made of silicone rubber or the like. shaped member 2
1 and a part of the diaphragm tube 13 is filled with an electrolyte 23 made of a solution of KI and CH 3 COOH, and is immersed in the electrolyte 23 made of Pt or Au. A cylindrical anode 24 is provided. Furthermore, the stopper 22,2
Inside the diaphragm tube 13 that penetrates through the center of the diaphragm tube 2' are a cathode 25 and a third electrode 2 made of Pt wire or Au wire and predetermined portions covered with paint or the like.
6, and the cathode 25 is connected to the anode 24 and the third electrode 26 via an ammeter 4 and a switch 5 by a conductive wire or the like. Furthermore, a liquid to be measured 7 is placed in the container 6, and the liquid to be measured 7 is sucked from the tip of the diaphragm tube 13. In addition, the plugs 22, 2
2', the cylindrical member 21, and a part of the diaphragm tube 13, a mixture 3 consisting of potassium phthalate crystals 31 and KI crystals 32 is placed together with the electrolytic solution 23. .
第２図は、上記電解セル２の周辺部の拡大断面
図であり、図中、４１〜４３は陰極２５および第
３電極２６の所定部分に施された塗料等の被覆で
あり、該被覆部分は電極として機能せず隔膜チユ
ーブ１３内における被測定液を陰極２５や第３電
極２６と直交する平面で３つの領域Ａ，Ｂ，Ｃに
間仕切りしたと同様の役割を果している。また、
第２図において、第１図と同一記号は同一意味を
もたせて使用し、ここでの説明は省略する。尚、
上記３つの領域Ａ，Ｂ，Ｃは第２図に示す如く大
略次のように設計されている。即ち、電解セル２
内の電解液２３（混合物３を含む）が存在する部
分に相当する領域が領域Ｂとされ、領域Ｂの上側
の領域（栓２２が存在する部分に相当する領域）
が領域Ａとされ、領域Ｂの下側の領域（栓２２′
等が存在する部分に相当する領域）が領域Ｃとさ
れている。 FIG. 2 is an enlarged sectional view of the peripheral part of the electrolytic cell 2, and in the figure, 41 to 43 are coatings such as paint applied to predetermined portions of the cathode 25 and the third electrode 26, and the coated portions are does not function as an electrode, but plays the same role as if the liquid to be measured in the diaphragm tube 13 was partitioned into three areas A, B, and C by a plane perpendicular to the cathode 25 and the third electrode 26. Also,
In FIG. 2, the same symbols as in FIG. 1 are used with the same meanings, and their explanations will be omitted here. still,
The three areas A, B, and C mentioned above are designed roughly as follows, as shown in FIG. That is, electrolytic cell 2
The area corresponding to the part where the electrolytic solution 23 (including the mixture 3) exists is defined as area B, and the area above area B (the area corresponding to the part where the plug 22 exists)
is defined as area A, and the area below area B (plug 22'
The area corresponding to the area where the above-mentioned objects exist is defined as area C.
上記構成からなる本発明の実施例における動作
について以下説明する。初めに、ピストン１１が
操作されて、被測定液７が吸引され隔膜チユーブ
１３内に導入されるとともに該被測定液７が隔膜
チユーブ１３の中で静止状態に保たれる。一方、
電解セル２においては、フタル酸カリウムの結晶
３１、KIの結晶３２が存在するため、電解液２
３はPH＝４のKI飽和溶液となつている。このた
め、隔膜チユーブ１３内の被測定液と電解セル２
内の電解液２３との間に、KIに関する大きな濃
度差が生じ、該濃度勾配が推進力となつて、電解
液２３中のKIが隔膜透過して隔膜チユーブ１３
内の被測定液へ移動する。而して、隔膜チユーブ
１３内の被測定液に含まれる残留塩素は、電解液
２３から至つたKIと直ちに反応してI2を析出す
る。該I2は各電極に電圧を印加することなくスイ
ツチ５が閉の状態で、陰極２５若しくは第３電極
２６にて還元されてI-となり、I2の量に比例した
電気量が電流計４で検出される。 The operation of the embodiment of the present invention having the above configuration will be described below. First, the piston 11 is operated, and the liquid to be measured 7 is sucked and introduced into the diaphragm tube 13, and the liquid to be measured 7 is kept stationary in the diaphragm tube 13. on the other hand,
In the electrolytic cell 2, since potassium phthalate crystals 31 and KI crystals 32 are present, the electrolyte 2
3 is a KI saturated solution with pH=4. Therefore, the liquid to be measured in the diaphragm tube 13 and the electrolytic cell 2
A large concentration difference regarding KI occurs between the electrolyte 23 in the electrolyte 23 and the KI in the diaphragm tube 13.
Move to the liquid to be measured inside. Therefore, the residual chlorine contained in the liquid to be measured in the diaphragm tube 13 immediately reacts with KI coming from the electrolytic solution 23 to precipitate I 2 . With the switch 5 closed and no voltage applied to each electrode, the I 2 is reduced to I - at the cathode 25 or the third electrode 26, and an amount of electricity proportional to the amount of I 2 is measured by the ammeter 4. Detected in
ところで、陰極２５および第３電極２６は、被
覆４１〜４３によつて所定の部分が被われてお
り、該被覆以外の部分でのみ電極として機能する
ため、隔膜チユーブ１３内は、前述の如く、被覆
４１〜４３によつて３つの領域Ａ，Ｂ，Ｃ間仕切
りされたようになつており、電解液２３から至つ
たKIと被測定液中の残留塩素が反応して生成し
た前記I2のうち、領域Ｂで析出したI2は陰極２５
で還元され、領域Ａ，Ｃで析出したI2は第３電極
２６で還元される。従つて、スイツチ５が開の状
態では、領域Ａ，Ｃで析出したI2だけが第３電極
２６による還元を受けているが、スイツチ５を閉
じると、領域Ｂで析出したI2が陰極２５による還
元を受け、該I2に比例した電気量が電流計４で検
出される。このため、領域Ａ，Ｃで析出したI2に
関する電気量は電流計４には現われず、領域Ｂで
析出したI2に関する電気量だけが電流計４で検出
される。 By the way, the cathode 25 and the third electrode 26 are covered with the coatings 41 to 43 at predetermined portions, and function as electrodes only in the portions other than the coatings, so the inside of the diaphragm tube 13 is as described above. Three areas A, B, and C are partitioned by the coatings 41 to 43, and the area I2 generated by the reaction between KI from the electrolytic solution 23 and residual chlorine in the liquid to be measured. , I 2 deposited in region B is on the cathode 25
The I 2 deposited in areas A and C is reduced at the third electrode 26. Therefore, when the switch 5 is open, only the I 2 deposited in regions A and C is reduced by the third electrode 26, but when the switch 5 is closed, the I 2 deposited in the region B is reduced by the cathode 25. The ammeter 4 detects an amount of electricity proportional to the I 2 . Therefore, the quantity of electricity related to I 2 deposited in areas A and C does not appear on the ammeter 4, and only the quantity of electricity related to I 2 deposited in area B is detected by the ammeter 4.
第３図および第４図は、電流計４で検出される
電解電流とスイツチ５が閉になつてからの経過時
間との関係を示す特性曲線図であり、第３電極２
６および被覆４１〜４３を用いず被覆されない陰
極を用いたときは第３図の特性を示し、陰極２５
および第３電極２６を用いたときは第４図の特性
を示す。また、第３図および第４図において、電
解電流Ｉは時間Ｔの経過にともなつて減少し、陰
極２５の近辺に存在するI2がなくなつたときに零
となる。しかし、第３図では陰極２５に近接する
I2はすぐに電気分解されるが、陰極の上下部分よ
り離れて存在するI2は、泳動もしくは拡散して陰
極に達するまでに時間がかかり、このI2がいつま
でも電気分解を続けるため電解電流Ｉはなかなか
零にならない。 3 and 4 are characteristic curve diagrams showing the relationship between the electrolytic current detected by the ammeter 4 and the elapsed time after the switch 5 is closed, and the third electrode 2
6 and coatings 41 to 43 and an uncoated cathode exhibits the characteristics shown in FIG.
When the third electrode 26 is used, the characteristics shown in FIG. 4 are shown. Furthermore, in FIGS. 3 and 4, the electrolytic current I decreases with the passage of time T, and becomes zero when I 2 existing in the vicinity of the cathode 25 disappears. However, in FIG.
I 2 is electrolyzed immediately, but I 2 that is located far away from the upper and lower parts of the cathode takes time to migrate or diffuse to reach the cathode, and because this I 2 continues to be electrolyzed indefinitely, the electrolytic current I does not easily reach zero.
第５図および第６図は、電流計４で検出される
電解電流の値が積分された電気量Ｃと、スイツチ
５が閉になつてからの経過時間との関係を示す特
性曲線図であり、第３電極２６および被覆４１〜
４３を用いず被覆されない陰極を用いたときは第
５図の特性を示し、陰極２５および第３電極２６
を用いたときは第６図の特性を示す。また、第５
図および第６図において、電気量Ｃは、被測定液
中の残留塩素濃度と比例関係にあり、通常は、約
２分経過後のほぼ安定した電気量の値から、被測
定液中の残留塩素濃度が測定される。第５図にお
いては、第３図と同様に電気量Ｃがいつまでも安
定しないが、第６図では電気量Ｃが短時間（第６
図では約１分）で安定する。 5 and 6 are characteristic curve diagrams showing the relationship between the amount of electricity C, which is the integrated value of the electrolytic current detected by the ammeter 4, and the elapsed time after the switch 5 is closed. , third electrode 26 and coating 41~
When an uncovered cathode is used without using the cathode 25 and the third electrode 26, the characteristics shown in FIG.
When used, the characteristics shown in FIG. 6 are shown. Also, the fifth
In the figure and Fig. 6, the quantity of electricity C is in a proportional relationship with the residual chlorine concentration in the liquid to be measured. Chlorine concentration is measured. In Fig. 5, as in Fig. 3, the quantity of electricity C is not stable forever, but in Fig. 6, the quantity of electricity C remains stable for a short period of time (6
It stabilizes in about 1 minute (in the figure).
以上、詳しく説明したような本発明の実施例に
よれば、隔膜チユーブ１３内における所定領域に
存在する被測定液のみが、陰極２５によつて残留
塩素の測定を受けることになり、測定される被測
定液の容積が限定されるため、短時間で安定した
測定値が得られるという利点を有する。また、本
発明の実施例において、残留塩素のI2置換が100
％行なわれ、且つ隔膜チユーブ１３や電極２４〜
２６の大きさが一定に保たれると、標準液を用い
て測定のたびに測定装置を校正する必要もなくな
るという利点も有している。更に、本発明の実施
例からピストン１１およびシリンダ１２を取り除
くとともに隔膜チユーブ１３の上流へ定流量ポン
プを付設し、被測定液を一定の流量で隔膜チユー
ブ１３内へ供給することにより、被測定液中の残
留塩素濃度を容易に連続測定できるという利点も
有している。 According to the embodiment of the present invention as described in detail above, only the liquid to be measured existing in a predetermined area within the diaphragm tube 13 is subjected to the residual chlorine measurement by the cathode 25. Since the volume of the liquid to be measured is limited, it has the advantage that stable measured values can be obtained in a short time. In addition, in the examples of the present invention, the I 2 substitution of residual chlorine is 100
%, and the diaphragm tube 13 and the electrodes 24~
If the size of 26 is kept constant, there is also the advantage that there is no need to calibrate the measuring device using a standard solution every time a measurement is made. Furthermore, the piston 11 and cylinder 12 are removed from the embodiment of the present invention, and a constant flow pump is attached upstream of the diaphragm tube 13 to supply the liquid to be measured into the diaphragm tube 13 at a constant flow rate. Another advantage is that the residual chlorine concentration inside can be easily and continuously measured.
第１図は、本発明の実施例を示す構成説明図、
第２図は、電解セル周辺部の拡大断面図、第３図
および第４図は、電解電流値と経過時間との関係
を示す特性曲線図、第５図および第６図は、電気
量と経過時間との関係を示す特性曲線図である。
１……吸入器、１１……ピストン、１２……シ
リンダ、１３……隔膜チユーブ、２……電解セ
ル、２１……筒状部材、２２，２２′……栓、２
３……電解液、２４……陽極、２５……陰極、２
６……第３電極、３……混合物、３１，３２……
結晶、４１〜４３……被覆、４……電流計、５…
…スイツチ、６……容器、７……被測定液。
FIG. 1 is a configuration explanatory diagram showing an embodiment of the present invention;
Figure 2 is an enlarged sectional view of the surrounding area of the electrolytic cell, Figures 3 and 4 are characteristic curve diagrams showing the relationship between electrolytic current value and elapsed time, and Figures 5 and 6 are graphs showing the relationship between the amount of electricity and It is a characteristic curve diagram showing the relationship with elapsed time. DESCRIPTION OF SYMBOLS 1... Inhaler, 11... Piston, 12... Cylinder, 13... Diaphragm tube, 2... Electrolytic cell, 21... Cylindrical member, 22, 22'... Plug, 2
3... Electrolyte, 24... Anode, 25... Cathode, 2
6...Third electrode, 3...Mixture, 31,32...
Crystal, 41-43...Coating, 4...Ammeter, 5...
...Switch, 6... Container, 7... Liquid to be measured.
Claims (1)
ユーブの外側に陽極を配設すると共に該チユーブ
の内側に陰極と第３電極を配設し、前記電解セル
内の電解液が存在する部分に相当する領域Ｂにお
いて前記第３電極を被覆すると共に該領域Ｂの上
側の領域Ａ及び該領域Ｂの下側の領域Ｃにおいて
前記陰極を被覆し、前記隔膜チユーブの中へ被測
定液を導いて静止させ、該被測定液へ前記隔膜チ
ユーブを透過させてKIを供給して前記被測定液
に含まれる残留塩素をI2に置換し、前記領域Ａ及
びＣで被覆された陰極と前記領域Ｂで被覆された
第３電極により前記隔膜チユーブ内において電気
分解される前記被測定液の間仕切りをおこないな
がら前記I2に定電位電気分解反応を生じさせ、そ
の後、前記陰極と陽極の間に流れる電気量を測定
することにより、前記被測定液中の残留塩素を測
定することを特徴とする残留塩素の測定方法。 ２ ピストン、シリンダ、および該シリンダに接
続された一定長さの隔膜チユーブからなり被測定
液を吸引し前記隔膜チユーブ内へ導いて静止させ
る吸入器と、筒状部材および該筒状部材の両端開
口部を塞ぐと共に前記隔膜チユーブが中心部を貫
通するように設けられた２個の栓とで構成され内
部に陽極、電解液、KIの結晶、およびフタル酸
カリウムの結晶が封入された電解セルと、前記隔
膜チユーブの外側に配設された陽極と、前記電解
セル内の電解液が存在する部分に相当する領域Ｂ
において被覆された第３電極と、該領域Ｂの上側
の領域Ａ及び該領域Ｂの下側の領域Ｃにおいて被
覆された陰極とを具備し、前記陰極と第３電極に
より前記隔膜チユーブ内において電気分解される
被測定液の間仕切りをおこないながら前記陰極と
陽極の間に流れる電気量を測定して前記被測定液
中の残留塩素を測定する残留塩素の測定装置。[Scope of Claims] 1. An anode is disposed on the outside of a diaphragm tube provided to penetrate the electrolytic cell, and a cathode and a third electrode are disposed on the inside of the tube, and the electrolyte in the electrolytic cell is The third electrode is coated in a region B corresponding to the part where the diaphragm tube is present, and the cathode is coated in a region A above the region B and a region C below the region B, and into the diaphragm tube. The measurement liquid is guided and kept stationary, and the diaphragm tube is passed through the measurement liquid to supply KI to replace the residual chlorine contained in the measurement liquid with I2 , and the area covered with the areas A and C is A constant potential electrolysis reaction is caused in the I2 while partitioning the liquid to be electrolyzed in the diaphragm tube by the cathode and a third electrode covered with the region B, and then the cathode and the anode A method for measuring residual chlorine, characterized in that residual chlorine in the liquid to be measured is measured by measuring the amount of electricity flowing during the period. 2. An inhaler consisting of a piston, a cylinder, and a diaphragm tube of a certain length connected to the cylinder, which sucks the liquid to be measured, guides it into the diaphragm tube, and makes it stand still, and a cylindrical member and openings at both ends of the cylindrical member. an electrolytic cell consisting of two plugs provided so that the diaphragm tube passes through the center, and an anode, an electrolyte, KI crystals, and potassium phthalate crystals sealed inside; , an anode disposed outside the diaphragm tube and a region B corresponding to a portion where an electrolytic solution exists in the electrolytic cell;
a third electrode coated in the diaphragm tube, and a cathode coated in a region A above the region B and a region C below the region B; A residual chlorine measuring device that measures residual chlorine in the liquid to be measured by measuring the amount of electricity flowing between the cathode and the anode while partitioning the liquid to be measured to be decomposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55175450A JPS5798855A (en) | 1980-12-12 | 1980-12-12 | Measuring method and device for residual chlorine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55175450A JPS5798855A (en) | 1980-12-12 | 1980-12-12 | Measuring method and device for residual chlorine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5798855A JPS5798855A (en) | 1982-06-19 |
| JPS6246825B2 true JPS6246825B2 (en) | 1987-10-05 |
Family
ID=15996282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55175450A Granted JPS5798855A (en) | 1980-12-12 | 1980-12-12 | Measuring method and device for residual chlorine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5798855A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0187321U (en) * | 1987-12-03 | 1989-06-09 |
-
1980
- 1980-12-12 JP JP55175450A patent/JPS5798855A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0187321U (en) * | 1987-12-03 | 1989-06-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5798855A (en) | 1982-06-19 |
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