JP2001133451A - Measuring device of alkalinity in water - Google Patents
Measuring device of alkalinity in waterInfo
- Publication number
- JP2001133451A JP2001133451A JP31675799A JP31675799A JP2001133451A JP 2001133451 A JP2001133451 A JP 2001133451A JP 31675799 A JP31675799 A JP 31675799A JP 31675799 A JP31675799 A JP 31675799A JP 2001133451 A JP2001133451 A JP 2001133451A
- Authority
- JP
- Japan
- Prior art keywords
- measuring
- alkalinity
- water
- valve
- test water
- 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.)
- Granted
Links
Landscapes
- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水中、特に海水中
のアルカリ度測定装置に関する。The present invention relates to an apparatus for measuring alkalinity in water, particularly in seawater.
【０００２】[0002]
【従来の技術】水のアルカリ度は、水に酸を加えて中和
し、中和に要する酸の当量数と定義される。したがって
水のｐＨが同じであっても溶存塩の量と種類とによって
アルカリ度は異なる。たとえば食塩（ＮａＣｌ）のよう
な中性の塩は、アルカリ度はない。これに対して、炭酸
（Ｈ3ＣＯ3）、ホウ酸（Ｂ（ＯＨ）3）、リン酸（Ｈ3Ｐ
Ｏ4）、ケイ酸（Ｈ2ＳｉＯ3）のような塩は、アルカリ
度がある。ホウ酸、リン酸、ケイ酸は水に対する溶解度
が小さい、または酸としての解離度が充分小さいため、
海水では、アルカリ度の９５％以上が炭酸によってい
る。ホウ酸によるアルカリ度は数％、その他の弱酸によ
るアルカリ度はそれより１桁少ない。2. Description of the Related Art The alkalinity of water is defined as the number of equivalents of acid required for neutralization by adding an acid to water. Therefore, even if the pH of water is the same, the alkalinity differs depending on the amount and type of dissolved salt. For example, a neutral salt such as salt (NaCl) has no alkalinity. In contrast, carbonic acid (H 3 CO 3 ), boric acid (B (OH) 3 ), phosphoric acid (H 3 P
Salts such as O 4 ) and silicic acid (H 2 SiO 3 ) have alkalinity. Boric acid, phosphoric acid, and silicic acid have low solubility in water or dissociation degree as an acid is small enough.
In seawater, more than 95% of the alkalinity is due to carbonic acid. The alkalinity due to boric acid is several percent, and the alkalinity due to other weak acids is one order of magnitude less.
【０００３】従来のアルカリ度の測定は、一定量の海水
をビーカなどの開放容器に採取し、塩酸で滴定して、塩
酸の滴定量から求めている。しかし炭酸の解離した炭酸
水素イオン（ＨＣＯ3 -）や炭酸イオン（ＣＯ3 2-）は、
中和が進むに従い炭酸（Ｈ2ＣＯ3）となり、さらに炭酸
ガス（ＣＯ2）となって海水中から気散し、正確なアル
カリ度の測定ができない。In the conventional measurement of alkalinity, a certain amount of seawater is collected in an open container such as a beaker, titrated with hydrochloric acid, and determined by titration of hydrochloric acid. However dissociated bicarbonate ions carbonate (HCO 3 -) and carbonate ions (CO 3 2-), the
As the neutralization progresses, it becomes carbonic acid (H 2 CO 3 ) and further becomes carbon dioxide gas (CO 2 ), which diffuses out of the seawater, making it impossible to accurately measure alkalinity.
【０００４】図５は、開放容器による誤差をなくすため
に提案された従来技術のアルカリ度測定装置１の断面図
である。測定装置１は、外層２と内層３とから構成さ
れ、内層３は計量器を兼ね、その内部は海水などの被検
水で充満される。内層３の上部に蓋体４を取付け、余分
の被検水は、溢流バルブ５から内層３外へ放出される。
蓋体４には溢流バルブ５の外にシリンジ６、滴定チップ
７、ｐＨ電極８および温度検出手段９が取付けられ、滴
定チップ７から一定濃度の塩酸が滴下され、内層３の底
部に設けられたマグネティックスターラ１０で、内層３
は内が撹拌され、被検水のｐＨがｐＨ電極８で測定され
る。シリンジ６は、塩酸を滴下することによる内層３内
の容積の増加に対応するために設けられており、滴定が
進むに従ってシリンジ６が上昇し内層３内の容積を増加
させる。FIG. 5 is a sectional view of a prior art alkalinity measuring device 1 proposed to eliminate errors caused by an open container. The measuring apparatus 1 includes an outer layer 2 and an inner layer 3, and the inner layer 3 also functions as a measuring instrument, and the inside thereof is filled with test water such as seawater. A lid 4 is attached to the upper part of the inner layer 3, and excess test water is discharged from the overflow valve 5 to the outside of the inner layer 3.
A syringe 6, a titration tip 7, a pH electrode 8, and a temperature detecting means 9 are attached to the lid 4 in addition to the overflow valve 5, and a fixed concentration of hydrochloric acid is dropped from the titration tip 7 and provided on the bottom of the inner layer 3. Magnetic stirrer 10, inner layer 3
Is stirred, and the pH of the test water is measured by the pH electrode 8. The syringe 6 is provided in order to cope with an increase in the volume in the inner layer 3 caused by dropping of hydrochloric acid. As the titration proceeds, the syringe 6 rises to increase the volume in the inner layer 3.
【０００５】[0005]
【発明が解決しようとする課題】図５に示す従来技術の
アルカリ度測定装置１では、溢流バルブ５、ｐＨ電極８
などが取付けられた蓋体４を被検水毎に取外し、取付け
せねばならず、その操作は複雑で熟練を要するものであ
る。このため自動化が困難であり、多くの被検水のアル
カリ度を連続して測定することができない。In the prior art alkalinity measuring apparatus 1 shown in FIG. 5, an overflow valve 5 and a pH electrode 8 are provided.
It is necessary to remove and attach the lid body 4 to which water is attached for each test water, and the operation is complicated and requires skill. For this reason, automation is difficult and the alkalinity of many test waters cannot be measured continuously.
【０００６】本発明の目的は、前記従来技術の測定装置
の問題点を解決し、取扱操作が簡単で自動化が容易な水
中アルカリ度測定装置を提供することである。An object of the present invention is to solve the problems of the above-mentioned prior art measuring apparatus and to provide an apparatus for measuring alkalinity in water which is easy to handle and easy to automate.
【０００７】[0007]
【課題を解決するための手段】本発明は、一定量の被検
水を計量する計量管と、少なくとも滴定手段と、ｐＨ測
定手段と、撹拌手段と、弁を有する大気開放細管とを備
えた密閉された測定セルと、計量管で計量された被検水
を前記測定セルに導入する送液手段とを含むことを特徴
とする水中アルカリ度測定装置である。SUMMARY OF THE INVENTION The present invention comprises a measuring tube for measuring a fixed amount of test water, at least a titrating device, a pH measuring device, a stirring device, and an open-to-atmosphere tube having a valve. An underwater alkalinity measuring device comprising: a sealed measuring cell; and a liquid sending means for introducing test water measured by a measuring tube into the measuring cell.
【０００８】本発明に従えば、外部に計量管を有するの
で、送液手段と弁を有する大気開放細管とによって、一
定量の被検水が測定セルに供給される。このため、従来
技術の蓋体を取付け、取外しすることなく、簡単な操作
でアルカリ度の測定ができる。According to the present invention, since a measuring pipe is provided outside, a fixed amount of test water is supplied to the measuring cell by the liquid sending means and the open-air small pipe having a valve. For this reason, the alkalinity can be measured by a simple operation without attaching and removing the lid of the related art.
【０００９】また本発明は、前記密閉された測定セル
が、さらに排水手段を備えることを特徴とする。Further, the present invention is characterized in that the sealed measuring cell further includes a drainage means.
【００１０】本発明に従えば、測定セルには排水手段が
設けられるので、１つの被検水の測定が終了すれば、被
検水を排水し、測定セル内を洗浄し、引続いて次の被検
水の測定に移ることができる。これによって、自動化が
容易となり、連続して多くの被検水の測定が可能とな
る。According to the present invention, since the measuring cell is provided with a drainage means, when the measurement of one sampled water is completed, the sampled water is drained, the inside of the measurement cell is washed, and then the next measurement is performed. To the measurement of the test water. Thereby, automation becomes easy and measurement of many test waters becomes possible continuously.
【００１１】[0011]
【発明の実施の形態】以下、実施の形態によって、本発
明を具体的に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments.
【００１２】図１は、本発明の実施の一形態の水中アル
カリ度測定装置２１の系統図である。本装置２１は、本
体部Ａ、切換部Ｂ、送液部Ｃおよび記録制御部Ｄを構成
要素とする。FIG. 1 is a system diagram of an underwater alkalinity measuring apparatus 21 according to one embodiment of the present invention. The present apparatus 21 includes a main unit A, a switching unit B, a liquid feeding unit C, and a recording control unit D as constituent elements.
【００１３】本体部Ａは、計量管２２と、測定セル３１
と滴定ビュレット２６とを含む。計量管２２は、一定量
の被検水を計量し、これを測定セル３１に送る。測定セ
ル３１は、通常は取付け、取外しすることのない蓋部に
ガラス電極３２、シリンジ３３、撹拌機３４、大気開放
細管３５および被検水送入管３６、滴定管３７が設けら
れる。大気開放細管３５には大気開放弁Ｖ６が設けら
れ、また測定セル３１の底部には排水弁Ｖ７が設けら
れ、排水管３８に接続される。滴定ビュレット２６は、
塩酸貯槽２７と、一定時間、たとえば１０秒毎に、一定
量、たとえば０．２ｍｌの塩酸を滴定管３７に送る手段
２８とを含む。The main unit A includes a measuring tube 22 and a measuring cell 31.
And a titration burette 26. The measuring pipe 22 measures a certain amount of the test water and sends it to the measuring cell 31. The measuring cell 31 is provided with a glass electrode 32, a syringe 33, a stirrer 34, an open-to-atmosphere small tube 35, a test water inlet tube 36, and a titration tube 37 on a cover that is not usually attached or removed. An air release valve V6 is provided in the air release thin tube 35, and a drain valve V7 is provided at the bottom of the measurement cell 31, and is connected to a drain pipe 38. The titration buret 26
It includes a hydrochloric acid storage tank 27 and a means 28 for sending a fixed amount, for example, 0.2 ml of hydrochloric acid to the titration tube 37 for a fixed time, for example, every 10 seconds.
【００１４】送液部Ｃは、洗浄水貯槽４１と、複数（図
１では３個）の被検水貯槽４２（個別には４２−１，４
２−２，…，４２−ｎ）とが設けられ、それぞれ開閉バ
ルブＶ３，Ｖ４（個別にはＶ４−１，Ｖ４−２，…，Ｖ
４−ｎ）を介してポンプＰの吸引部に接続される。また
ポンプＰの吸引部は、シリカゲル層４３およびソーダラ
イム層４４によって湿分や炭酸ガスを除去した清浄空気
を開閉バルブＶ５を介して吸引する。ポンプＰは、開閉
バルブＶ３〜Ｖ５のうち開いているバルブと接続され、
洗浄水、被検水または清浄空気を吸引して、切換部Ｂに
送る働きをする。The liquid sending section C includes a washing water storage tank 41 and a plurality (three in FIG. 1) of test water storage tanks 42 (individually 42-1, 4).
2-2,..., 42-n), respectively, and on-off valves V3, V4 (individually V4-1, V4-2,.
4-n) is connected to the suction part of the pump P. The suction part of the pump P sucks the clean air from which moisture and carbon dioxide have been removed by the silica gel layer 43 and the soda lime layer 44 via the on-off valve V5. The pump P is connected to an open valve among the open / close valves V3 to V5,
It functions to suck the washing water, the test water or the clean air and send it to the switching unit B.
【００１５】切換部Ｂは、六方弁である第１切換弁Ｖ１
と三方弁である第２切換弁Ｖ２とから構成され、２つの
切換弁によってポンプＰの吐出部を後述するように切換
え、被検液を計量管２２に送り、計量管２２の被検液を
測定セル３１に送り、洗浄水を直接測定セル３１に送
る。The switching section B includes a first switching valve V1 which is a six-way valve.
And a second switching valve V2, which is a three-way valve. The two switching valves are used to switch the discharge portion of the pump P as described later, to send the test liquid to the measuring pipe 22, and to change the test liquid in the measuring pipe 22. The cleaning water is sent to the measuring cell 31, and the washing water is sent directly to the measuring cell 31.
【００１６】記録制御部Ｄは、測定セル３１のｐＨ測定
手段であるガラス電極３２の出力を時間の経過とともに
記録する記録計５１と、マイクロコンピュータなどで構
成され、タイマ５３を含み、前記バルブＶ１〜Ｖ８、ポ
ンプＰ、撹拌機３４、滴定ビュレット２６などを一定の
プログラムによって運転制御する制御器５２とから構成
される。The recording control section D is composed of a recorder 51 for recording the output of the glass electrode 32, which is a pH measuring means of the measuring cell 31, with the passage of time, a microcomputer and the like. To V8, a pump P, a stirrer 34, a titration burette 26, and the like, which are controlled by a certain program.
【００１７】図３は、制御器５２に関連する電気結線図
である。次に制御器５２による水中の全アルカリ度測定
の制御動作を図４のフローチャートで説明する。正常に
本装置２１が停止された状態では、ガラス電極３２は洗
浄水（純水）に浸漬された状態、すなわち測定セル３１
は洗浄水が満たされた状態にある。本装置２１がスター
トすると、ステップＳ１に進み、排水バルブＶ７が開
く。大気開放バルブＶ６は開いているので、測定セル３
１内の洗浄水が排出される。一定時間の経過によって排
水が完了すると、ステップＳ２に進み、開閉弁Ｖ７が閉
じ、開閉弁Ｖ４が開き、第２切換弁Ｖ２がＣＯＭ−ＮＯ
方向に通じ、第１切換弁Ｖ１が実線方向に切換わり、ポ
ンプＰが運転され、たとえば第１の被検水が一定時間排
水され、途中の配管が被検水で満たされる。気液センサ
４６の位置に被検水が来ると、ステップＳ３に進み、第
２切換弁Ｖ２がＣＯＭ−ＮＣ方向に、第１切換弁Ｖ２が
鎖線方向に切換わり、被検水が計量管２２に満たされ
る。気液センサ４６の位置に被検水が来ると、ステップ
Ｓ４に進み、開閉弁Ｖ４が閉じ、開閉弁Ｖ５が開き、第
１切換弁Ｖ１が実線方向に切換わり、清浄空気によって
計量管２２内の被検水が測定セル３１に送られる。この
とき大気開放弁Ｖ６は開いているので、測定セル３１内
の空気は大気開放細管３５から放出される。気液センサ
４７の位置に清浄空気が来ると、ステップＳ５に進み、
第１切換弁Ｖ２がＣＯＭ−ＮＯに切換わり、大気開放弁
Ｖ６が閉じ、測定セル３１が密閉状態となる。なお、こ
のときポンプＰが停止し、開閉弁Ｖ５が閉じる。FIG. 3 is an electrical connection diagram relating to the controller 52. Next, the control operation of the total alkalinity measurement in water by the controller 52 will be described with reference to the flowchart of FIG. When the apparatus 21 is normally stopped, the glass electrode 32 is immersed in cleaning water (pure water), that is, the measuring cell 31
Is in a state filled with washing water. When the present apparatus 21 starts, the process proceeds to step S1, and the drain valve V7 is opened. Since the atmosphere release valve V6 is open, the measurement cell 3
The washing water in 1 is discharged. When drainage is completed after a certain period of time, the process proceeds to step S2, where the on-off valve V7 is closed, the on-off valve V4 is opened, and the second switching valve V2 is set to COM-NO.
The first switching valve V1 is switched in the solid line direction, the pump P is operated, and, for example, the first test water is drained for a certain period of time, and the piping on the way is filled with the test water. When the test water comes to the position of the gas-liquid sensor 46, the process proceeds to step S3, where the second switching valve V2 is switched in the COM-NC direction, the first switching valve V2 is switched in the chain line direction, and the test water is transferred to the measuring pipe 22. To be satisfied. When the test water comes to the position of the gas-liquid sensor 46, the process proceeds to step S4, where the on-off valve V4 is closed, the on-off valve V5 is opened, the first switching valve V1 is switched in the direction of the solid line, and the clean air is supplied into the measuring pipe 22. Is sent to the measurement cell 31. At this time, since the atmosphere release valve V6 is open, the air in the measurement cell 31 is discharged from the atmosphere release thin tube 35. When clean air comes to the position of the gas-liquid sensor 47, the process proceeds to step S5,
The first switching valve V2 is switched to COM-NO, the atmosphere release valve V6 is closed, and the measurement cell 31 is closed. At this time, the pump P stops and the on-off valve V5 closes.
【００１８】測定セル３１が密閉状態になると、ステッ
プＳ６に進み、被検水のアルカリ度の測定が行われる。
アルカリ度の測定のために、まず撹拌機３４が回転し、
次に滴定ビュレット２６から、たとえば１０秒毎に０．
２ｍｌの０．１Ｎ塩酸が被検水に加えられ、この間連続
して被検液の電位差がガラス電極３２によって測定さ
れ、その結果が記録計５１に記録される。ガラス電極３
２の出力（電位差）が塩酸の１回の滴下（０．２ｍｌ）
によってほとんど変化しなくなった時点で測定は終了
し、撹拌機３４が停止し、記録計５１の記録が停止す
る。When the measuring cell 31 is closed, the process proceeds to step S6, where the alkalinity of the test water is measured.
For the measurement of alkalinity, the stirrer 34 first rotates,
Next, from the titration burette 26, for example, every 10 seconds, the pressure is set to 0.1.
2 ml of 0.1N hydrochloric acid is added to the test water. During this time, the potential difference of the test liquid is continuously measured by the glass electrode 32, and the result is recorded on the recorder 51. Glass electrode 3
Output of 2 (potential difference) is one drop of hydrochloric acid (0.2 ml)
As a result, the measurement is terminated when it hardly changes, the stirrer 34 stops, and the recording of the recorder 51 stops.
【００１９】アルカリ度の測定が停止すると、ステップ
Ｓ７に進み、大気開放度Ｖ６と排水弁Ｖ７とが開き、測
定セル３１内の被検水が排出される。一定時間の経過に
よって排水が完了すると、ステップＳ８に進み、排水弁
Ｖ７が閉じ、開閉弁Ｖ３が開き、第１切換弁Ｖ１が鎖線
に切換わり、ポンプＰが運転され、測定セル３１内に洗
浄水が計量管２２を通さずに送られる。一定時間経過し
て、洗浄水が測定セル内に満たされると、ステップＳ９
に進み、ポンプＰが停止し、開閉弁Ｖ３が閉じ、撹拌機
３４が運転され、測定セル３１内が洗浄される。一定時
間洗浄されると、ステップＳ１０に進み、撹拌機３４が
停止する。次にステップＳ１１に進み、次の被検水があ
るか否かが判断される。次の被検水があれば、ステップ
Ｓ１２で次の被検水に移る。図１の例では、第１の被検
水の測定が終われば、第２の被検水に移り、第２の被検
水の測定が終われば第３の被検水に移り、ステップＳ２
〜Ｓ１１を繰返す。ステップＳ１１で次の被検水がなけ
れば、ステップＳ１３に移り、開閉弁Ｖ３を開き、ポン
プＰを運転して、測定セル３１内に洗浄水を満たす。一
定時間経過して測定セル３１内に洗浄水が満たされれば
ステップＳ１３に進み、ポンプＰを停止し、開閉弁Ｖ３
を閉じ、ステップＳ１４で一連の操作を終了する。When the measurement of the alkalinity is stopped, the process proceeds to step S7, where the degree of open air V6 and the drain valve V7 are opened, and the test water in the measuring cell 31 is discharged. When drainage is completed after a certain period of time, the process proceeds to step S8, where the drainage valve V7 is closed, the on-off valve V3 is opened, the first switching valve V1 is switched to the chain line, the pump P is operated, and the inside of the measurement cell 31 is washed. Water is sent without passing through the metering tube 22. When a predetermined time has elapsed and the cleaning water is filled in the measurement cell, step S9 is performed.
The pump P is stopped, the on-off valve V3 is closed, the agitator 34 is operated, and the inside of the measurement cell 31 is washed. After being cleaned for a certain time, the process proceeds to step S10, and the stirrer 34 stops. Next, the process proceeds to step S11, and it is determined whether or not there is the next test water. If there is the next test water, the process moves to the next test water in step S12. In the example of FIG. 1, when the measurement of the first test water is completed, the process proceeds to the second test water, and when the measurement of the second test water is completed, the process proceeds to the third test water.
To S11 are repeated. If there is no next test water in step S11, the process proceeds to step S13, where the on-off valve V3 is opened, the pump P is operated, and the measuring cell 31 is filled with the washing water. If the measuring cell 31 is filled with the washing water after a certain period of time, the process proceeds to step S13, the pump P is stopped, and the on-off valve V3
Is closed, and a series of operations ends in step S14.
【００２０】前記本装置２１は、本体部Ａ、切換部Ｂ、
送液部Ｃおよび記録制御部Ｄを含み、連続的に複数個の
被検水のアルカリ度を自動測定するものであるが、本体
部Ａのみから構成され、作業員によって被検水を計量管
２２に導入し、これを計量管２２から測定セル３１に移
し、撹拌機３４を回転して、ガラス電極３２の出力を見
ながら、手動のビュレットで滴定するものであってもよ
い。The apparatus 21 comprises a main body A, a switching section B,
It includes a liquid sending section C and a recording control section D, and continuously and automatically measures the alkalinity of a plurality of test waters. The liquid may be introduced into the measuring tube 22, transferred from the measuring tube 22 to the measuring cell 31, and rotated by the stirrer 34, and titration may be performed with a manual burette while watching the output of the glass electrode 32.
【００２１】図４は、本装置１を用いて計量管２２で計
量された約１００ｍｌの海水を０．１Ｎ塩酸で滴定した
ときの塩酸滴定量と、ガラス電極で測定した電位差の関
係を示すグラフである。この場合、塩酸滴定量２．０ｍ
ｌと２．２ｍｌとでは電位差が変わらず、この時点で滴
定は終了する。これからアルカリ度は２．０ｍｍｏｌ／
ｋｇとなる（実際には計量管の容積が９３ｍｌであった
ので２，１５１μｍｏｌ／ｋｇとなった）。FIG. 4 is a graph showing the relationship between the hydrochloric acid titer when about 100 ml of seawater measured with the measuring tube 22 using the present apparatus 1 is titrated with 0.1N hydrochloric acid and the potential difference measured with the glass electrode. It is. In this case, the hydrochloric acid titer was 2.0 m.
The potential difference does not change between 1 and 2.2 ml, at which point the titration ends. From now on, the alkalinity is 2.0 mmol /
kg (actually, it was 2,151 μmol / kg because the volume of the measuring tube was 93 ml).
【００２２】表１は、外洋海水の被検水を１０回繰返
し、本装置２１を用いて、アルカリ度を測定した結果で
ある。Table 1 shows the results of measuring the alkalinity using the present apparatus 21 by repeating the test water of the open seawater 10 times.
【００２３】[0023]
【表１】 [Table 1]
【００２４】表１の結果から、本装置２１を用いた場合
の標準偏差（１σ）は１．７４であった。これは図５に
示す従来装置を用いるよりも充分小さい。From the results shown in Table 1, the standard deviation (1σ) when the present apparatus 21 was used was 1.74. This is much smaller than using the conventional device shown in FIG.
【００２５】[0025]
【発明の効果】以上のように本発明によれば、測定セル
と計量管とを有するので、アルカリ度の測定の度に、ガ
ラス電極やシリンジなどを有する測定セルの蓋体を取外
し、取付ける必要がなく、簡単な操作で水中アルカリ度
の測定ができる。また自動化も容易である。As described above, according to the present invention, since the measuring cell and the measuring tube are provided, it is necessary to remove and attach the lid of the measuring cell having the glass electrode and the syringe every time the alkalinity is measured. Measurement of alkalinity in water with simple operation. Automation is also easy.
【図１】本発明の実施の一形態の水中アルカリ度測定装
置２１の系統図である。FIG. 1 is a system diagram of an underwater alkalinity measuring device 21 according to an embodiment of the present invention.
【図２】制御器５２に関連する電気結線図である。FIG. 2 is an electrical connection diagram relating to a controller 52.
【図３】制御器５２の制御操作を説明するフローチャー
トである。FIG. 3 is a flowchart illustrating a control operation of a controller 52.
【図４】０．１Ｎ−塩酸で約１００ｍｌの海水を滴定し
たとき、塩酸量とガラス電極の出力との関係を示すグラ
フである。FIG. 4 is a graph showing the relationship between the amount of hydrochloric acid and the output of a glass electrode when about 100 ml of seawater is titrated with 0.1N hydrochloric acid.
【図５】従来技術の水中アルカリ度測定装置１の断面図
である。FIG. 5 is a sectional view of a prior art underwater alkalinity measuring device 1.
２１ 水中アルカリ度測定装置 ２２ 計量管 ２６ 滴定ビュレット ３１ 測定セル ３２ ガラス電極 ３３ シリンジ ３４ 撹拌機 ３５ 大気開放細管 ３６ 被検水送入管 ３７ 滴定管 ４１ 洗浄水槽 ４２ 被検水槽 ４３ シリカゲル層 ４４ ソーダライム層 ４６，４７ 気液センサ ５１ 記録計 ５２ 制御器 Ａ 本体部 Ｂ 切換部 Ｃ 送液部 Ｄ 記録制御部 Ｐ ポンプ Ｖ１，Ｖ２ 切換弁 Ｖ３〜Ｖ７ 開閉弁 DESCRIPTION OF SYMBOLS 21 Underwater alkalinity measuring device 22 Measuring tube 26 Titration burette 31 Measurement cell 32 Glass electrode 33 Syringe 34 Stirrer 35 Air open thin tube 36 Test water inlet tube 37 Titration tube 41 Washing water tank 42 Test water tank 43 Silica gel layer 44 Soda lime layer 46, 47 Gas-liquid sensor 51 Recorder 52 Controller A Main unit B Switching unit C Liquid sending unit D Recording control unit P Pump V1, V2 Switching valve V3 to V7 On-off valve
Claims (2)
弁を有する大気開放細管とを備えた密閉された測定セル
と、 計量管で計量された被検水を前記測定セルに導入する送
液手段とを含むことを特徴とする水中アルカリ度測定装
置。1. A measuring pipe for measuring a certain amount of test water, at least a titration means, a pH measurement means, a stirring means,
An underwater alkalinity measuring device, comprising: a sealed measuring cell provided with an open-air capillary having a valve; and a liquid sending means for introducing test water measured by a measuring tube into the measuring cell.
手段を備えることを特徴とする請求項１記載の水中アル
カリ度測定装置。2. The underwater alkalinity measuring apparatus according to claim 1, wherein the sealed measuring cell further includes a drainage unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31675799A JP3497429B2 (en) | 1999-11-08 | 1999-11-08 | Underwater alkalinity measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31675799A JP3497429B2 (en) | 1999-11-08 | 1999-11-08 | Underwater alkalinity measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001133451A true JP2001133451A (en) | 2001-05-18 |
| JP3497429B2 JP3497429B2 (en) | 2004-02-16 |
Family
ID=18080592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31675799A Expired - Fee Related JP3497429B2 (en) | 1999-11-08 | 1999-11-08 | Underwater alkalinity measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3497429B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009264913A (en) * | 2008-04-24 | 2009-11-12 | Kimoto Denshi Kogyo Kk | Underwater total alkalinity measuring method |
| US20130316460A1 (en) * | 2012-05-22 | 2013-11-28 | Korea Institute Of Geoscience And Mineral Resources | Unmanned automatic alkalinity measuring system and method |
| JP2014032188A (en) * | 2012-08-01 | 2014-02-20 | Korea Institute Of Geoscience And Mineral Resources | Manless water quality sampling device and sampling method |
| CN104764891A (en) * | 2015-03-30 | 2015-07-08 | 江苏一脉科技有限公司 | Online analyzer for excess of caustic soda |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344844B (en) * | 2017-01-24 | 2021-04-02 | 陈思嘉 | Method for detecting alkalinity value of solution |
| KR102245751B1 (en) * | 2019-08-09 | 2021-04-27 | 강원대학교 산학협력단 | A METHOD FOR MEASURING ALKALINITY THROUGH MEASUREMENT OF pH, TEMPERATURE AND INORGANIC CARBON COMPONENTS AND A INSTRUMENT FOR MEASURING ALKALINITY BASED ON THE SAME |
-
1999
- 1999-11-08 JP JP31675799A patent/JP3497429B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009264913A (en) * | 2008-04-24 | 2009-11-12 | Kimoto Denshi Kogyo Kk | Underwater total alkalinity measuring method |
| US20130316460A1 (en) * | 2012-05-22 | 2013-11-28 | Korea Institute Of Geoscience And Mineral Resources | Unmanned automatic alkalinity measuring system and method |
| JP2013242315A (en) * | 2012-05-22 | 2013-12-05 | Korea Inst Of Geoscience & Mineral Resources | Unmanned automatic alkalinity measurement system and method |
| JP2016001180A (en) * | 2012-05-22 | 2016-01-07 | コリア インスティチュート オブ ジオサイエンス アンド ミネラル リソースズ | Unmanned automatic alkalinity measuring system and method |
| JP2014032188A (en) * | 2012-08-01 | 2014-02-20 | Korea Institute Of Geoscience And Mineral Resources | Manless water quality sampling device and sampling method |
| CN104764891A (en) * | 2015-03-30 | 2015-07-08 | 江苏一脉科技有限公司 | Online analyzer for excess of caustic soda |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3497429B2 (en) | 2004-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0616859U (en) | Automatic calibration device for laboratory ion concentration meter | |
| EP0139202A1 (en) | Apparatus for testing membrane filters, and apparatus for sterilizing liquids with use of membrane filter | |
| CN102597757A (en) | Automatic analyzing device | |
| JP3620856B2 (en) | Liquid sample inspection equipment | |
| JP2001133451A (en) | Measuring device of alkalinity in water | |
| WO2006043900A1 (en) | A water quality testing system | |
| EP0214846A2 (en) | Sample monitoring instrument for on-line application | |
| JPH1194715A (en) | Method and device for transporting liquid sample to be inspected for optical characteristic and polarimeter using the device | |
| JPH01209372A (en) | Cleaner for automatic chemical analyzer | |
| JPH0843380A (en) | Gram's staining method and its device | |
| CN209247683U (en) | A kind of automatic control oxygen consumption rate detection device | |
| CN201984026U (en) | Laboratory silicate instrument | |
| KR101334307B1 (en) | Unmanned automatic alkalinity measuring system and method | |
| CN206930614U (en) | Full-automatic online PH detectors and its system | |
| US6024780A (en) | Method and apparatus for degassing a fluid in a reusable vaccum chamber with microprocessor based controls | |
| CN102103121A (en) | Online automatic detection device for sulphitation intensity of sugar refinery | |
| JP4576340B2 (en) | Automatic analyzer | |
| JP2004522957A (en) | Method for use in testing a liquid sample, a test unit utilizing the method, and a system comprising the test unit | |
| CN201917553U (en) | Online automatic detection device for sulphitation strength in sugarhouse | |
| JPS6126849A (en) | Automatic measuring device for ion concentration of aqueous solution | |
| JPH11169840A (en) | Waste water treatment analyzing method and device therefor | |
| JP2001133371A (en) | Tissue piece treating device | |
| CN102175623B (en) | Silicate instrument for laboratory | |
| JPH0747731Y2 (en) | Electrolyte concentration measuring device | |
| JPH0464026B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081128 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081128 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091128 Year of fee payment: 6 |
|
| LAPS | Cancellation because of no payment of annual fees |