JP3530863B2 - Measuring device for partial pressure of carbon dioxide dissolved in seawater - Google Patents
Measuring device for partial pressure of carbon dioxide dissolved in seawaterInfo
- Publication number
- JP3530863B2 JP3530863B2 JP26055999A JP26055999A JP3530863B2 JP 3530863 B2 JP3530863 B2 JP 3530863B2 JP 26055999 A JP26055999 A JP 26055999A JP 26055999 A JP26055999 A JP 26055999A JP 3530863 B2 JP3530863 B2 JP 3530863B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- carbon dioxide
- partial pressure
- bubbling
- seawater
- 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 - Fee Related
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims description 138
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims description 69
- 239000001569 carbon dioxide Substances 0.000 title claims description 68
- 239000013535 sea water Substances 0.000 title claims description 55
- 239000007788 liquid Substances 0.000 claims description 52
- 230000005587 bubbling Effects 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000010792 warming Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、海水中に溶存する
二酸化炭素分圧の測定装置に関する。TECHNICAL FIELD The present invention relates to an apparatus for measuring a partial pressure of carbon dioxide dissolved in seawater.
【０００２】[0002]
【従来の技術】化石燃料の大量消費によって大気中の二
酸化炭素の濃度が増加し、これが地球の温暖化に関連す
る。しかし大気中の二酸化炭素濃度が増加すると、その
一部は海水中に溶存する。このために海水中の溶存二酸
化炭素の分圧を正確に測定することは、地球温暖化を論
ずる上で重要な課題である。2. Description of the Related Art The large consumption of fossil fuels increases the concentration of carbon dioxide in the atmosphere, which is associated with global warming. However, as the concentration of carbon dioxide in the atmosphere increases, some of it is dissolved in seawater. Therefore, accurate measurement of the partial pressure of dissolved carbon dioxide in seawater is an important issue in discussing global warming.
【０００３】海水中に溶存する二酸化炭素分圧は、一定
温度の海水と平衡にある大気圧下の空気中の二酸化炭素
分圧で定義される。海水は接触する空気と二酸化炭素分
圧が平衡に達するように、海水中に溶存する二酸化炭素
が空気中に放出され、または空気中の二酸化炭素が海水
中に吸収される。このような二酸化炭素の放出や吸収が
あっても、海水中に溶存する二酸化炭素分圧が変わらな
いように、大量の海水を空気と接触させる必要がある。The partial pressure of carbon dioxide dissolved in seawater is defined as the partial pressure of carbon dioxide in the air at atmospheric pressure in equilibrium with seawater having a constant temperature. Carbon dioxide dissolved in seawater is released into the air, or carbon dioxide in the air is absorbed into the seawater so that the contacting air and the carbon dioxide partial pressure of the seawater reach equilibrium. Even if such carbon dioxide is released or absorbed, it is necessary to bring a large amount of seawater into contact with air so that the partial pressure of carbon dioxide dissolved in seawater does not change.
【０００４】実用の海水中に溶存する二酸化炭素分圧の
測定装置では、海水と空気とが平衡状態になるのを促進
するために、海水と空気との接触面積を増加させてい
る。In a practical device for measuring the partial pressure of carbon dioxide dissolved in seawater, the contact area between seawater and air is increased in order to promote equilibrium between seawater and air.
【０００５】従来から用いられている典型的な測定装置
１を図５に示す。一定温度の海水は、シャワー手段２に
よって、接触面積を増大されて気液平衡器３に供給さ
れ、海水貯留部４から溢流管５を経て排出される。一方
空気は、気液平衡器３の下部に供給され、気液平衡器３
の上部からＣＯ2分析手段に送られ、ここで空気中の二
酸化炭素分圧が測定され送風機７によって循環される。A typical measuring device 1 used conventionally is shown in FIG. The contact area of the seawater having a constant temperature is increased by the shower means 2 to be supplied to the gas-liquid equilibrium device 3, and is discharged from the seawater storage part 4 through the overflow pipe 5. On the other hand, air is supplied to the lower part of the gas-liquid balancer 3 and
Is sent to the CO 2 analysis means from above, where the partial pressure of carbon dioxide in the air is measured and circulated by the blower 7.
【０００６】従来装置１では、海水はシャワー手段２に
よって噴出されるが、接触面積は充分大きくならず、平
衡に達するのに５〜３０分を要する。このため空気は送
風機７で循環せねばならず、空気は閉鎖系となり平衡器
内部を厳密に大気圧下にすることが困難であり、誤差の
要因となりうる。また海水を噴出するシャワー手段２
は、海水中の動物プランクトンによって目詰まりを生
じ、頻繁に掃除をしなくてはならず、メンテナンスが必
要である。In the conventional device 1, seawater is jetted by the shower means 2, but the contact area is not sufficiently large, and it takes 5 to 30 minutes to reach equilibrium. Therefore, the air must be circulated by the blower 7, the air becomes a closed system, and it is difficult to keep the inside of the balancer strictly under the atmospheric pressure, which may cause an error. In addition, shower means 2 for ejecting seawater
Are clogged by zooplankton in seawater, must be cleaned frequently and require maintenance.
【０００７】この他に気液平衡器での海水と空気との接
触面積を増加するために。バブリングと濡壁とを用いる
方法が考えられる。バブリング法では、海水の表面張力
の影響で海水面で気泡が生じ、気泡がはじけるまでに時
間を要するいわゆるバブリング効果現象が起こる。この
ために空気中の二酸化炭素分圧が、平衡分圧よりも２〜
３ｐｐｍ低くなり、好ましくない。濡壁法は、接触面積
を大きくするために気液平衡器３を細長くしなればなら
ず、好ましくない。In addition to this, in order to increase the contact area between seawater and air in the gas-liquid balancer. A method using bubbling and a wet wall can be considered. In the bubbling method, bubbles are generated on the surface of seawater due to the influence of the surface tension of seawater, and a so-called bubbling effect phenomenon occurs in which it takes time for the bubbles to pop. For this reason, the carbon dioxide partial pressure in the air is 2 to more than the equilibrium partial pressure.
It becomes 3 ppm lower, which is not preferable. The wet wall method is not preferable because the gas-liquid equilibrium device 3 has to be elongated in order to increase the contact area.
【０００８】[0008]
【発明が解決しようとする課題】上述のように従来の方
法ではメンテナンスの頻度が高く、かつ連続して正確な
海水中に溶存する二酸化炭素分圧の測定が困難である。As described above, in the conventional method, the frequency of maintenance is high and it is difficult to continuously and accurately measure the partial pressure of carbon dioxide dissolved in seawater.
【０００９】本発明の目的はメンテナンスの頻度が低
く、連続して正確な測定が可能なフロースルーで平衡ガ
スが得られる気液平衡器を備えた海水中に溶存する二酸
化炭素分圧の測定装置を提供することである。An object of the present invention is a device for measuring a partial pressure of carbon dioxide dissolved in seawater, which is equipped with a gas-liquid equilibrium capable of obtaining an equilibrium gas with a flow-through which can perform accurate measurements continuously with low maintenance frequency. Is to provide.
【００１０】[0010]
【課題を解決するための手段】本発明は、液中にガスを
バブリングするバブリング部と、バブリング部の上部に
連なり、上下方向に延びる支持棒と支持棒に支持された
複数のはねとを内部に有するミキサ部と、バブリング部
の下部に連なる液面調節器から成る気液平衡器と、フロ
ースルー方式で気液平衡器にガスを供給するガス供給手
段と、気液平衡器から排出されるガス中の二酸化炭素分
圧を測定するＣＯ2分析手段とを含むことを特徴とする
海水中の二酸化炭素分圧の測定装置である。SUMMARY OF THE INVENTION The present invention comprises a bubbling portion for bubbling gas in a liquid, a support rod continuous with the upper portion of the bubbling portion and extending vertically, and a plurality of springs supported by the support rod. A mixer part inside, a gas-liquid balancer consisting of a liquid level controller connected to the lower part of the bubbling part, a gas supply means for supplying gas to the gas-liquid balancer by a flow-through method, and a gas discharge from the gas-liquid balancer. CO 2 analysis means for measuring the partial pressure of carbon dioxide in the gas, the measuring device for measuring the partial pressure of carbon dioxide in seawater.
【００１１】本発明に従えば、第１段階としてバブリン
グによって海水とガスとの二酸化炭素分圧が平衡にされ
る。また第２段階として設けられたミキサのはねと支持
棒および気液平衡器の周壁によって濡壁面積が充分大き
くされる。これによってガス（実際には空気）は、循環
型ではなく、フロースルー方式で二酸化炭素分圧が平衡
とされる。したがって気液平衡器内部は大気圧とされ、
連続的に海水中に溶存する二酸化炭素分圧の測定ができ
る。According to the present invention, as the first step, the carbon dioxide partial pressures of seawater and gas are balanced by bubbling. Further, the area of the wet wall is made sufficiently large by the splash of the mixer, the support rod and the peripheral wall of the gas-liquid balancer provided as the second stage. As a result, the gas (actually air) is not a circulation type but a carbon dioxide partial pressure is balanced by a flow-through method. Therefore, the inside of the gas-liquid balancer is at atmospheric pressure,
The partial pressure of carbon dioxide dissolved in seawater can be measured continuously.
【００１２】また本発明は、ＣＯ2分析手段の出力によ
って検出された二酸化炭素の分圧と等しい分圧の炭酸ガ
スを含むガスをバブリング部に供給することを特徴とす
る。また本発明は、液中にガスをバブリングするバブリ
ング部と、バブリング部の上部に連なり、上下方向に延
びる支持棒と支持棒に支持された複数のはねとを内部に
有するミキサ部とから成る気液平衡器と、フロースルー
方式で気液平衡器にガスを供給するガス供給手段と、気
液平衡器から排出されるガス中の二酸化炭素分圧を測定
するＣＯ2分析手段とを含み、ＣＯ2分析手段の出力によ
って検出された二酸化炭素の分圧と等しい分圧の炭酸ガ
スを含むガスをバブリング部に供給することを特徴とす
る海水中の二酸化炭素分圧の測定装置である。Further, the present invention is characterized in that a gas containing carbon dioxide gas having a partial pressure equal to the partial pressure of carbon dioxide detected by the output of the CO 2 analyzing means is supplied to the bubbling section. Further, the present invention comprises a bubbling portion for bubbling gas in the liquid, and a mixer portion having a support rod connected to the upper portion of the bubbling portion and extending in the up-down direction and a plurality of springs supported by the support rod. A gas-liquid equilibrium, a gas supply means for supplying gas to the gas-liquid equilibrium in a flow-through system, and a CO 2 analysis means for measuring the carbon dioxide partial pressure in the gas discharged from the gas-liquid equilibrium, A device for measuring a partial pressure of carbon dioxide in seawater, characterized in that a gas containing carbon dioxide gas having a partial pressure equal to the partial pressure of carbon dioxide detected by the output of the CO 2 analysis means is supplied to the bubbling portion.
【００１３】本発明に従えば、気液平衡器に供給される
ガスには、海水中に溶存する二酸化炭素分圧と略平衡な
二酸化炭素が含まれる。海水中に溶存する二酸化炭素分
圧は、連続的に測定されるとき秒単位で大きく変化する
ことがないので、二酸化炭素分圧はより速やかに平衡に
達する。According to the present invention, the gas supplied to the gas-liquid equilibrium contains carbon dioxide which is substantially in equilibrium with the partial pressure of carbon dioxide dissolved in seawater. Since the partial pressure of carbon dioxide dissolved in seawater does not change significantly in seconds when continuously measured, the partial pressure of carbon dioxide reaches equilibrium more quickly.
【００１４】また本発明は、ＣＯ2分析手段の排ガスの
一部を含むガスをバブリング部に供給することを特徴と
する。また本発明は、液中にガスをバブリングするバブ
リング部と、バブリング部の上部に連なり、上下方向に
延びる支持棒と支持棒に支持された複数のはねとを内部
に有するミキサ部とから成る気液平衡器と、フロースル
ー方式で気液平衡器にガスを供給するガス供給手段と、
気液平衡器から排出されるガス中の二酸化炭素分圧を測
定するＣＯ2分析手段とを含み、ＣＯ2分析手段の排ガス
の一部を含むガスをバブリング部に供給することを特徴
とする海水中の二酸化炭素分圧の測定装置である。Further, the present invention is characterized in that a gas containing a part of the exhaust gas of the CO 2 analysis means is supplied to the bubbling section. Further, the present invention comprises a bubbling portion for bubbling gas in the liquid, and a mixer portion having a support rod connected to the upper portion of the bubbling portion and extending in the up-down direction and a plurality of springs supported by the support rod. A gas-liquid equilibrium and a gas supply means for supplying gas to the gas-liquid equilibrium by a flow-through method,
CO 2 analysis means for measuring the partial pressure of carbon dioxide in the gas discharged from the gas-liquid equilibrium, and supplying a gas containing a part of the exhaust gas of the CO 2 analysis means to the bubbling part. It is a measuring device for the partial pressure of carbon dioxide.
【００１５】本発明に従えば、気液平衡器に供給される
空気には、ＣＯ2分析手段の排ガスの一部、たとえば排
ガスの約２／３が混ぜられる。これによって二酸化炭素
分圧は、より速やかに平衡に達する。According to the invention, the air supplied to the gas-liquid equilibrium is mixed with a part of the exhaust gas of the CO 2 analysis means, for example about 2/3 of the exhaust gas. This causes the carbon dioxide partial pressure to reach equilibrium more quickly.
【００１６】また海水中に溶存する二酸化炭素分圧と等
しい分圧の二酸化炭素を含む空気を供給するために用い
る二酸化炭素の量を約１／３に節約できる。Further, the amount of carbon dioxide used for supplying air containing carbon dioxide having a partial pressure equal to the partial pressure of carbon dioxide dissolved in seawater can be saved to about 1/3.
【００１７】[0017]
【発明の実施の形態】以下、実施の形態によって、本発
明をより詳細に説明する。図１は、本発明の実施の一形
態の海水中に溶存する二酸化炭素分圧の測定装置１０の
系統図である。本装置１０は、気液平衡器２０とＣＯ2
分析手段１１とフィードバックシステム１６とから構成
される。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to embodiments. FIG. 1 is a system diagram of a measuring device 10 for partial pressure of carbon dioxide dissolved in seawater according to an embodiment of the present invention. The device 10 includes a gas-liquid balancer 20 and a CO 2
It is composed of an analysis means 11 and a feedback system 16.
【００１８】図２は、気液平衡器２０の断面図である。
気液平衡器２０は、円筒状に構成され、下部に海水貯留
部２１、中間部にバブリング部２２，上部にミキサ部２
３を備える。海水は、ミキサ部２３の上部中央から供給
され、支持棒２４から複数枚（本実施の形態では５枚）
のはね２５によって接触面積を増大されてバブリング部
２２に落下する。はね２５は、たとえば最上段のものか
ら９０°ずつずれて順次配置される。バブリング部２２
は、下部から空気が供給され、周囲に多数の小孔を設け
たバブラ２６から気泡が発生し、液面２７に達する間に
気泡中の二酸化炭素分圧は海水中に溶存する二酸化炭素
分圧にほぼ等しくなる。液面２７では、ミキサ２３から
落下する海水によって、気泡が破壊される。空気は、さ
らにミキサ部２３で海水と大きい接触面で接し、海水と
空気との二酸化炭素分圧は、ほぼ完全に（９９．９％）
平衡に達する。平衡ガスは、ミキサ部２３の上部周辺か
らＣＯ2分析手段１１に送られる。海水貯留部２１に
は、海水連絡管２８が連絡され、液面調節器２９を経て
排出される。FIG. 2 is a sectional view of the gas-liquid balancer 20.
The gas-liquid balancer 20 is formed in a cylindrical shape, and has a seawater storage part 21 in the lower part, a bubbling part 22 in the middle part, and a mixer part 2 in the upper part.
3 is provided. Seawater is supplied from the upper center of the mixer unit 23, and a plurality of seawater is supplied from the support rods 24 (five in this embodiment).
The contact area is increased by the splashes 25 and drops onto the bubbling portion 22. The splashes 25 are sequentially arranged, for example, shifted by 90 ° from the uppermost one. Bubbling part 22
Is supplied with air from the lower part, bubbles are generated from the bubbler 26 having many small holes around it, and the carbon dioxide partial pressure in the bubbles while reaching the liquid level 27 is the partial pressure of carbon dioxide dissolved in seawater. Is almost equal to. At the liquid level 27, the bubbles are destroyed by the seawater falling from the mixer 23. Further, the air comes into contact with the seawater at a large contact surface in the mixer section 23, and the carbon dioxide partial pressure between the seawater and the air is almost completely (99.9%).
Reach equilibrium. The equilibrium gas is sent to the CO 2 analysis means 11 from around the upper portion of the mixer section 23. A seawater connecting pipe 28 is connected to the seawater storage portion 21, and is discharged via a liquid level controller 29.
【００１９】ＣＯ2分析手段１１は、除湿器１２と非分
散赤外線吸収ＣＯ2計（ＮＤＩＲ）１３と、コンピュー
タユニット１４と、記録計１５などから構成される。平
衡ガスは、除湿器１２で水分を除去され、ＮＤＩＲ１３
に送られ、ここでＣＯ2分圧が検出され、ＣＯ分析手段
１１外に排出される。ＮＤＩＲ１３の出力は、コンピュ
ータユニット１４に送られ、記録計１５に記録される。The CO 2 analysis means 11 comprises a dehumidifier 12, a non-dispersive infrared absorption CO 2 meter (NDIR) 13, a computer unit 14, a recorder 15, and the like. The equilibrium gas has its moisture removed by the dehumidifier 12, and the NDIR 13
The CO 2 partial pressure is detected there and is discharged to the outside of the CO analysis means 11. The output of the NDIR 13 is sent to the computer unit 14 and recorded in the recorder 15.
【００２０】フィードバックシステム１６は、高濃度Ｃ
Ｏ2ボンベ１７と、ゼロガス発生器１８と供給ガス調整
器１９などから構成される。供給ガス調整器１９にはコ
ンピュータユニット１４からＮＤＩＲ１３で検出された
二酸化炭素分圧に応じた電気信号が送られ、これによっ
て高濃度ＣＯ2ボンベ１７から送られるガス量とゼロガ
ス発生器１８から送られるガス量とが調整され、ＮＤＩ
Ｒ１３で検出された二酸化炭素分圧と略等しい二酸化炭
素分圧の供給ガスとして気液平衡器２０に送られる。The feedback system 16 is a high concentration C
It is composed of an O 2 cylinder 17, a zero gas generator 18, a supply gas regulator 19, and the like. An electric signal corresponding to the carbon dioxide partial pressure detected by the NDIR 13 is sent from the computer unit 14 to the supply gas regulator 19, whereby the amount of gas sent from the high-concentration CO 2 cylinder 17 and the zero gas generator 18 are sent. Gas amount and NDI are adjusted
It is sent to the gas-liquid equilibrium device 20 as a supply gas having a carbon dioxide partial pressure substantially equal to the carbon dioxide partial pressure detected in R13.
【００２１】この他に一定時間毎に、大気中の二酸化炭
素を測定したり、校正用ボンベ３３のガスでＮＤＩＲ１
３を校正したり、海水貯留部２１の温度や大気圧をコン
ピュータユニット１４に送り、ＮＤＩＲ１３で測定され
たＣＯ2分圧とともに記録計１５に記録したりする。In addition to this, the carbon dioxide in the atmosphere is measured at regular intervals, and the gas in the calibration cylinder 33 is used to perform NDIR1.
3 is calibrated, or the temperature and atmospheric pressure of the seawater reservoir 21 are sent to the computer unit 14 and recorded in the recorder 15 together with the CO 2 partial pressure measured by the NDIR 13.
【００２２】図３は、気液平衡器２０に導入した空気の
二酸化炭素濃度を０〜５００ｐｐｍの間で変化させて、
２種類の海水中に溶存する二酸化炭素分圧を、本装置１
０で測定した結果である。供給ガスの二酸化炭素の濃度
が変わっても平衡ガスの二酸化炭素の濃度はほとんど変
わらない。これによって、この気液平衡器の効率が充分
に高く、フロースルーでほぼ完全に平衡に達しているこ
とがわかる。FIG. 3 shows that the carbon dioxide concentration of the air introduced into the gas-liquid equilibrium device 20 is changed between 0 and 500 ppm,
This device 1 measures the partial pressure of carbon dioxide dissolved in two types of seawater.
It is the result measured at 0. Even if the carbon dioxide concentration of the supply gas changes, the carbon dioxide concentration of the equilibrium gas hardly changes. From this, it can be seen that the efficiency of this gas-liquid equilibrium is sufficiently high and the equilibrium is almost completely reached by the flow-through.
【００２３】本発明の実施の他の形態として、フィード
バックシステム１６がなく供給ガスとして除塵した二酸
化炭素０〜５００ｐｐｍの空気を供給するものであって
もよい。As another embodiment of the present invention, the feedback system 16 may be omitted and the dust-free carbon dioxide air of 0 to 500 ppm may be supplied.
【００２４】図４は、本発明の実施のさらに他の形態の
海水中に溶存する二酸化炭素分圧の測定装置３０のブロ
ック図である。本装置３０は、先の実施の形態の装置１
０と類似し、同一の部材には同一の符号を付す。本装置
３０では、供給ガス調整器３１にＮＤＩＲ１３の排ガス
の一部、たとえば２／３が、高濃度ＣＯ2ボンベ１７か
らのガスおよびゼロガス発生器１８からのガスとともに
送られる。ＮＤＩＲ１３の排ガスは、分配器３２によっ
て０〜９０％の範囲で調節されて供給ガス調整器３１に
送られ、高濃度ＣＯ2ガスおよびゼロガスは、その合計
量が１００〜１０％の範囲とされる。FIG. 4 is a block diagram of a measuring device 30 for measuring the partial pressure of carbon dioxide dissolved in seawater according to still another embodiment of the present invention. The device 30 is the device 1 of the previous embodiment.
Similar to 0, the same members are designated by the same reference numerals. In the present device 30, a part of the exhaust gas of the NDIR 13, for example, 2/3, is sent to the supply gas regulator 31 together with the gas from the high-concentration CO 2 cylinder 17 and the gas from the zero gas generator 18. The exhaust gas of the NDIR 13 is adjusted in the range of 0 to 90% by the distributor 32 and sent to the supply gas adjuster 31, and the total amount of the high-concentration CO 2 gas and zero gas is set to the range of 100 to 10%. .
【００２５】[0025]
【発明の効果】以上のように本発明によれば、気液平衡
器がバブリング部とその上に連なるミキサ部とから成る
ので、バブリング部では、海水とガスとの接触面積が充
分大きく、ミキサ部はバブリング効果を低く押え、両者
の作用によって、フロースルーで完全な平衡ガスが得ら
れる。またフロースルーであるので、気液平衡器内を厳
密に大気圧とすることができ、かつメンテナンス頻度が
低く、連続して海水中に溶存する二酸化炭素分圧が測定
できる。As described above, according to the present invention, since the gas-liquid balancer comprises the bubbling section and the mixer section connected to the bubbling section, the contact area between seawater and gas is sufficiently large in the bubbling section. The part suppresses the bubbling effect low, and by the action of both, a perfect equilibrium gas is obtained in the flow through. Further, since it is a flow-through, the inside of the gas-liquid equilibrium can be strictly kept at atmospheric pressure, the maintenance frequency is low, and the partial pressure of carbon dioxide dissolved in seawater can be continuously measured.
【図１】本発明の実施の一形態の海水中に溶存する二酸
化炭素分圧の測定装置１０の系統図である。FIG. 1 is a system diagram of an apparatus 10 for measuring a partial pressure of carbon dioxide dissolved in seawater according to an embodiment of the present invention.
【図２】気液平衡器２０の断面図である。FIG. 2 is a cross-sectional view of a gas-liquid balancer 20.
【図３】気液平衡器２０に導入する供給ガスと気液平衡
器２０から排出された平衡ガスとに含まれる二酸化炭素
の濃度の関係を示すグラフである。FIG. 3 is a graph showing the relationship between the concentration of carbon dioxide contained in the supply gas introduced into the gas-liquid equilibrium device 20 and the equilibrium gas discharged from the gas-liquid equilibrium device 20.
【図４】本発明の実施のさらに他の形態の海水中に溶存
する二酸化炭素分圧の測定装置３０の系統図である。FIG. 4 is a system diagram of an apparatus 30 for measuring a partial pressure of carbon dioxide dissolved in seawater according to still another embodiment of the present invention.
【図５】従来技術の海水中に溶存する二酸化炭素分圧の
測定装置１の系統図である。FIG. 5 is a system diagram of a prior art measuring device 1 for measuring the partial pressure of carbon dioxide dissolved in seawater.
１０，３０ 海水中に溶存する二酸化炭素分圧の測定装
置
１１ ＣＯ2分析手段
１２ 除湿器
１３ 非分散赤外線吸収ＣＯ2計（ＮＤＩＲ）
１４ コンピュータユニット
１５ 記録計
１６ フィードバックシステム
２０ 気液平衡器
２１ 海水貯留部
２２ バブリング部
２３ ミキサ部
２４ 支持棒
２５ はね
２６ バブラ
２７ 液面
２９ 液面調節器
３３ 校正用ボンベ10, 30 Measuring device for partial pressure of carbon dioxide dissolved in seawater 11 CO 2 analysis means 12 Dehumidifier 13 Non-dispersive infrared absorption CO 2 meter (NDIR) 14 Computer unit 15 Recorder 16 Feedback system 20 Gas-liquid equilibrium 21 Seawater Reservoir 22 Bubbling 23 Mixer 24 Support rod 25 Splash 26 Bubbler 27 Liquid level 29 Liquid level controller 33 Calibration cylinder
───────────────────────────────────────────────────── フロントページの続き (72)発明者 紀本 岳志 大阪府大阪市天王寺区舟橋町３番１号 紀本電子工業株式会社内 (72)発明者 紀本 英志 大阪府大阪市天王寺区舟橋町３番１号 紀本電子工業株式会社内 (72)発明者 島野 富士雄 茨城県牛久市神谷６−27−２ (56)参考文献 特開 昭54−154393（ＪＰ，Ａ) 特開 平８−129011（ＪＰ，Ａ) 特開 平５−232103（ＪＰ，Ａ) 特開2000−317208（ＪＰ，Ａ) 特開 昭57−147045（ＪＰ，Ａ) 特公 平４−64023（ＪＰ，Ｂ２) 実公 昭63−23997（ＪＰ，Ｙ２) 特表 平８−505218（ＪＰ，Ａ) 特許2580520（ＪＰ，Ｂ２) 特許3025495（ＪＰ，Ｂ１) 米国特許5643799（ＵＳ，Ａ) 野尻幸宏、植松崇嗣，“船上ＣＯ２分 圧測定装置の開発改良と測定法間誤差要 因の解明”，地球環境研究総合推進費平 成９年度研究成果報告集（中間報告２) ●地球の温暖化（現象解明），日本, 環境庁企画調整局地球環境部環境保全対 策課研究調査室，1999年 ３月 ９日, ｐ．153−156 (58)調査した分野(Int.Cl.7，ＤＢ名) G01N 1/00 -1/44 G01N 33/00 - 33/46 ＪＩＣＳＴファイル（ＪＯＩＳ)─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Kimoto 3-1, Funabashi-cho, Tennoji-ku, Osaka-shi, Osaka Within Kimoto Electronics Industry Co., Ltd. (72) Hideshi Kimoto Funabashi-cho, Tennoji-ku, Osaka-shi, Osaka No. 3 No. 1 within Kimoto Electronics Co., Ltd. (72) Inventor Fujio Shimano 6-27-2 Kamiya 6-Ushiku City, Ibaraki Prefecture (56) Reference JP-A-54-154393 (JP, A) JP-A-8-129011 (JP, A) JP 5-232103 (JP, A) JP 2000-317208 (JP, A) JP 57-147045 (JP, A) JP 4-64023 (JP, B2) Sho 63-23997 (JP, Y2) Tokumeihei 8-505218 (JP, A) Patent 2580520 (JP, B2) Patent 3025495 (JP, B1) US Patent 5643799 (US, A) Yukihiro Nojiri, Takashi Uematsu, "Boat Development and improvement of CO2 partial pressure measuring device Elucidation of the cause of error between measurement methods ", Comprehensive Grant-in-Aid for Global Environmental Research FY 9 Research Results (Interim Report 2) ● Global warming (phenomena elucidation), Japan, Environment Agency Planning and Coordination Bureau Global Environment Department Environment Conservation Measures Division, Research and Research Office, March 9, 1999, p. 153-156 (58) Fields surveyed (Int.Cl. 7 , DB name) G01N 1/00 -1/44 G01N 33/00-33/46 JISST file (JOIS)
Claims (5)
部と、バブリング部の上部に連なり、上下方向に延びる
支持棒と支持棒に支持された複数のはねとを内部に有す
るミキサ部と、バブリング部の下部に連なる液面調節器
から成る気液平衡器と、 フロースルー方式で気液平衡器にガスを供給するガス供
給手段と、 気液平衡器から排出されるガス中の二酸化炭素分圧を測
定するＣＯ2分析手段とを含むことを特徴とする海水中
の二酸化炭素分圧の測定装置。1. A bubbling section, a bubbling section for bubbling gas in a liquid, a mixer section connected to an upper portion of the bubbling section and extending vertically, and a plurality of springs supported by the supporting bar. Gas-liquid balancer consisting of a liquid level controller connected to the lower part of the section, gas supply means for supplying gas to the gas-liquid balancer by the flow-through method, and carbon dioxide partial pressure in the gas discharged from the gas-liquid balancer. And a CO 2 analysis means for measuring the above.
た二酸化炭素の分圧と等しい分圧の炭酸ガスを含むガス
をバブリング部に供給することを特徴とする請求項１記
載の海水中の二酸化炭素分圧の測定装置。2. The dioxide in seawater according to claim 1, wherein a gas containing carbon dioxide having a partial pressure equal to the partial pressure of carbon dioxide detected by the output of the CO 2 analysis means is supplied to the bubbling portion. Carbon partial pressure measuring device.
スをバブリング部に供給することを特徴とする請求項１
または２記載の海水中の二酸化炭素分圧の測定装置。3. The gas containing a part of the exhaust gas of the CO 2 analysis means is supplied to the bubbling portion.
Or the measuring device of the partial pressure of carbon dioxide in seawater according to 2.
部と、バブリング部の上部に連なり、上下方向に延びる
支持棒と支持棒に支持された複数のはねとを内部に有す
るミキサ部とから成る気液平衡器と、 フロースルー方式で気液平衡器にガスを供給するガス供
給手段と、 気液平衡器から排出されるガス中の二酸化炭素分圧を測
定するＣＯ2分析手段とを含み、 ＣＯ2分析手段の出力によって検出された二酸化炭素の
分圧と等しい分圧の炭酸ガスを含むガスをバブリング部
に供給することを特徴とする海水中の二酸化炭素分圧の
測定装置。4. A bubbling portion for bubbling gas in the liquid, and a mixer portion having a support rod continuous to the upper portion of the bubbling portion and extending in the up-down direction and a plurality of springs supported by the support rod. A gas-liquid equilibrium, a gas supply means for supplying gas to the gas-liquid equilibrium by a flow-through method, and a CO 2 analysis means for measuring the carbon dioxide partial pressure in the gas discharged from the gas-liquid equilibrium, A device for measuring a partial pressure of carbon dioxide in seawater, characterized in that a gas containing carbon dioxide having a partial pressure equal to the partial pressure of carbon dioxide detected by the output of the CO 2 analysis means is supplied to the bubbling portion.
部と、バブリング部の上部に連なり、上下方向に延びる
支持棒と支持棒に支持された複数のはねとを内部に有す
るミキサ部とから成る気液平衡器と、 フロースルー方式で気液平衡器にガスを供給するガス供
給手段と、 気液平衡器から排出されるガス中の二酸化炭素分圧を測
定するＣＯ2分析手段とを含み、 ＣＯ2分析手段の排ガスの一部を含むガスをバブリング
部に供給することを特徴とする海水中の二酸化炭素分圧
の測定装置。5. A bubbling portion for bubbling gas into the liquid, and a mixer portion having a support rod continuous to the upper portion of the bubbling portion and extending in the vertical direction and a plurality of springs supported by the support rod. A gas-liquid equilibrium, a gas supply means for supplying gas to the gas-liquid equilibrium by a flow-through method, and a CO 2 analysis means for measuring the carbon dioxide partial pressure in the gas discharged from the gas-liquid equilibrium, A device for measuring a partial pressure of carbon dioxide in seawater, characterized in that a gas containing a part of the exhaust gas of CO 2 analysis means is supplied to a bubbling part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26055999A JP3530863B2 (en) | 1999-09-14 | 1999-09-14 | Measuring device for partial pressure of carbon dioxide dissolved in seawater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26055999A JP3530863B2 (en) | 1999-09-14 | 1999-09-14 | Measuring device for partial pressure of carbon dioxide dissolved in seawater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001083053A JP2001083053A (en) | 2001-03-30 |
| JP3530863B2 true JP3530863B2 (en) | 2004-05-24 |
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|---|---|---|---|
| JP26055999A Expired - Fee Related JP3530863B2 (en) | 1999-09-14 | 1999-09-14 | Measuring device for partial pressure of carbon dioxide dissolved in seawater |
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| JP5431005B2 (en) * | 2009-04-08 | 2014-03-05 | 株式会社東芝 | Carbon dioxide recovery system |
| KR101363012B1 (en) * | 2012-11-28 | 2014-02-12 | 한국해양과학기술원 | Apparatus for measuring partial pressure of carbon dioxide within seawater in water tank |
| NO20191352A1 (en) * | 2019-11-14 | 2021-05-17 | Searas As | Method for determining the amount of a gas dissolved in a liquid |
| CN116227993B (en) * | 2023-01-17 | 2023-11-07 | 国家海洋环境监测中心 | Seawater absorbing atmospheric CO 2 Method for evaluating capacity regulatory factor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2580520B2 (en) | 1993-06-04 | 1997-02-12 | 九州大学長 | Towing robot for observation of dissolved substances in the sea |
| US5643799A (en) | 1994-10-31 | 1997-07-01 | Umpqua Research Company | Process for analyzing CO2 in seawater |
| JP3025495B1 (en) | 1999-04-05 | 2000-03-27 | 博之 片山 | Method and apparatus for measuring partial pressure of dissolved substance in liquid |
-
1999
- 1999-09-14 JP JP26055999A patent/JP3530863B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2580520B2 (en) | 1993-06-04 | 1997-02-12 | 九州大学長 | Towing robot for observation of dissolved substances in the sea |
| US5643799A (en) | 1994-10-31 | 1997-07-01 | Umpqua Research Company | Process for analyzing CO2 in seawater |
| JP3025495B1 (en) | 1999-04-05 | 2000-03-27 | 博之 片山 | Method and apparatus for measuring partial pressure of dissolved substance in liquid |
Non-Patent Citations (1)
| Title |
|---|
| 野尻幸宏、植松崇嗣，"船上ＣＯ２分圧測定装置の開発改良と測定法間誤差要因の解明"，地球環境研究総合推進費平成９年度研究成果報告集（中間報告２） ●地球の温暖化（現象解明），日本，環境庁企画調整局地球環境部環境保全対策課研究調査室，１９９９年 ３月 ９日，ｐ．１５３−１５６ |
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| JP2001083053A (en) | 2001-03-30 |
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