JPH05322874A - Carbon content measuring instrument - Google Patents
Carbon content measuring instrumentInfo
- Publication number
- JPH05322874A JPH05322874A JP15444192A JP15444192A JPH05322874A JP H05322874 A JPH05322874 A JP H05322874A JP 15444192 A JP15444192 A JP 15444192A JP 15444192 A JP15444192 A JP 15444192A JP H05322874 A JPH05322874 A JP H05322874A
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- Prior art keywords
- sample
- amount
- liquid
- reaction section
- carbon
- 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.)
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、河川等の水中や土壌・
工業原料等に含まれる有機体炭素の総量（ＴＯＣ量）を
測定する全有機体炭素計等の炭素量測定装置に関する。[Field of Industrial Application] The present invention is applicable to water such as rivers and soil.
The present invention relates to a carbon amount measuring device such as a total organic carbon meter for measuring the total amount (TOC amount) of organic carbon contained in industrial raw materials and the like.
【０００２】[0002]
【従来の技術】流体試料専用の反応部を有する全有機体
炭素計が従来から用いられている。このような全有機体
炭素計の一例を図５に示し、その動作を以下に述べる。2. Description of the Related Art An all-organic carbon meter having a reaction section dedicated to a fluid sample has been conventionally used. An example of such an all-organic carbon meter is shown in FIG. 5, and its operation will be described below.
【０００３】まず、液体試料（有機体炭素を含んだ水）
１０を試料注入器１４に吸入し、ロータリバルブ１３を
切り換えてＴＣ燃焼管１５に送出する。液体試料１０は
ＴＣ燃焼管１５で燃焼され、液体試料１０に含まれる炭
素はすべてＣＯ2となる。このＣＯ2を含む燃焼ガスは図
５（ｂ）の除湿・ガス処理部２０を通って赤外線ガス分
析部（ＮＤＩＲ）２１に送られ、そこでＣＯ2量が測定
される。このようにして測定されたＣＯ2量をＴＣ燃焼
管１５に送出された液体試料１０の量で正規化すること
により、液体試料１０中の有機体炭素と無機体炭素を合
わせた炭素の総量（ＴＣ量）が求められる。なお、以上
の各操作は、キーボード２３及びディスプレイ２４が接
続された制御部２２の制御の下に行なわれ、ＮＤＩＲ２
１による測定結果からのＴＣ量の計算も制御部２２にお
いて行なわれる。First, a liquid sample (water containing organic carbon)
10 is sucked into the sample injector 14, the rotary valve 13 is switched, and the sample is injected into the TC combustion tube 15. The liquid sample 10 is burned in the TC combustion tube 15, and the carbon contained in the liquid sample 10 is all CO 2 . The combustion gas containing CO 2 is sent to the infrared gas analysis unit (NDIR) 21 through the dehumidification / gas processing unit 20 of FIG. 5B, and the amount of CO 2 is measured there. By normalizing the amount of CO 2 measured in this manner with the amount of the liquid sample 10 sent to the TC combustion tube 15, the total amount of carbon (combined organic carbon and inorganic carbon in the liquid sample 10 ( TC amount) is calculated. Each of the above operations is performed under the control of the control unit 22 to which the keyboard 23 and the display 24 are connected, and the NDIR2
The control unit 22 also calculates the TC amount from the measurement result of 1.
【０００４】上記のようにしてＴＣ量を求めた後は、液
体試料１０に含まれる無機体炭素（ＩＣ）の量を求める
ため、ロータリバルブ１３を切り換え、試料注入器１４
に吸入した液体試料１０をＩＣ反応器１８へ送出する。
ＩＣ反応器１８では液体試料１０を酸性化し、液体試料
１０に含まれるＩＣをすべてＣＯ2とする。このＣＯ2の
量は前記と同様にしてＮＤＩＲ２１で測定され、これか
らＩＣ量が求められる。そして、このＩＣ量を上記のＴ
Ｃ量から差し引くことにより、全有機体炭素量（ＴＯＣ
量）が求められる。After determining the TC amount as described above, in order to determine the amount of inorganic carbon (IC) contained in the liquid sample 10, the rotary valve 13 is switched and the sample injector 14 is used.
The liquid sample 10 sucked in is delivered to the IC reactor 18.
In the IC reactor 18, the liquid sample 10 is acidified so that all the ICs contained in the liquid sample 10 are CO 2 . The amount of CO 2 is measured by NDIR21 in the same manner as described above, and the amount of IC is obtained from this. Then, this IC amount is set to the above T
By subtracting from the C amount, the total organic carbon amount (TOC
Amount) is required.
【０００５】なお、液体試料１０に揮発性の有機体炭素
が含まれていない場合は、液体試料１０を試料注入器１
４へ吸入する前に、空気を吹き込むことによって液体試
料１０に含まれるＩＣを除去してもよい。すなわち、液
体試料１０に塩酸や硫酸等の無機酸を加えて酸性にし、
ボンベ１１に充填されている高純度の空気を吹き込む。
これにより、液体試料１０中のＩＣがＣＯ2に変換され
大気中に放出される。このようにして液体試料１０から
ＩＣを除去した後にＴＣ燃焼管１５で燃焼させれば、Ｉ
Ｃ量を求めることなくＴＯＣ量を求めることができる。When the liquid sample 10 does not contain volatile organic carbon, the liquid sample 10 is replaced with the sample injector 1.
Before the air is sucked into 4, the IC contained in the liquid sample 10 may be removed by blowing air. That is, an inorganic acid such as hydrochloric acid or sulfuric acid is added to the liquid sample 10 to make it acidic,
The high-purity air filled in the cylinder 11 is blown.
As a result, the IC in the liquid sample 10 is converted into CO 2 and released into the atmosphere. In this way, if the IC is removed from the liquid sample 10 and then burned in the TC combustion tube 15, I
The TOC amount can be obtained without obtaining the C amount.
【０００６】[0006]
【発明が解決しようとする課題】上記の全有機体炭素計
は流体試料のみを対象とするが、これ以外にも、いわゆ
るボートサンプラを試料導入機構として備え、固体試料
のＴＯＣ量を測定することができる全有機体炭素計が存
在する。このボートサンプラを用いた全有機体炭素計
は、固体試料だけでなく液体試料についても測定可能で
ある。しかし、通常の液体試料の場合には、ボートサン
プラを用いるよりも上記の流体試料導入機構を用いる方
が容易にかつ効率よく測定できる。また、懸濁試料につ
いては、一般的には流体試料導入機構を用いる方が容易
にかつ効率よく測定できるが、懸濁物質の沈降速度及び
凝集速度が速い試料や均質化が困難な試料の場合には流
体試料導入機構は適さない。したがって、試料が液体か
固体か、懸濁試料の性質がどうかによって試料導入機構
を使い分けるのが望ましい。The above-mentioned all-organic carbon meter is intended only for a fluid sample, but in addition to this, a so-called boat sampler is provided as a sample introduction mechanism to measure the TOC amount of a solid sample. There is an all-organic carbon meter that can do this. The all-organic carbon meter using this boat sampler can measure not only solid samples but also liquid samples. However, in the case of a normal liquid sample, it is easier and more efficient to use the above fluid sample introduction mechanism than the boat sampler. In addition, for suspended samples, it is generally easier and more efficient to use the fluid sample introduction mechanism, but in the case of samples with a high sedimentation rate and aggregation rate of suspended solids or difficult to homogenize. The fluid sample introduction mechanism is not suitable for. Therefore, it is desirable to properly use the sample introduction mechanism depending on whether the sample is a liquid or a solid and the nature of the suspension sample.
【０００７】一方、本来は液体用の全有機体炭素計であ
るがオプションを追加して固体用とすることができる装
置もあった。しかし、この装置は、試料導入機構を液体
用から固体用に転換する際の配管のつなぎ換え等の作業
が面倒であるため、転換に時間を要するという欠点があ
る。[0007] On the other hand, although there was originally an all-organic carbon meter for liquids, there was also an apparatus which could be made to be for solids by adding an option. However, this device has a drawback that it takes a long time to convert the sample introduction mechanism because it is troublesome to change the pipes when the sample introduction mechanism is changed from the liquid type to the solid type.
【０００８】本発明はこのような課題を解決するために
成されたものであり、その目的とするところは、試料が
固体か液体か、懸濁試料の性質がどうかに拘らず、１台
の装置で容易にかつ効率よくＴＯＣ量を測定することが
できる全有機体炭素計を提供することにある。The present invention has been made to solve such a problem, and its object is to provide a single unit regardless of whether the sample is a solid or a liquid or the nature of the suspension sample. An object is to provide a total organic carbon meter capable of easily and efficiently measuring the TOC amount with a device.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
本発明では、試料に含まれる炭素を酸化して二酸化炭素
に変換し、該二酸化炭素の量をガス分析手段によって求
めることにより、前記試料に含まれる炭素量を測定する
炭素量測定装置において、流体試料を導入する流体試料
導入機構を有し、導入された流体試料に含まれる炭素を
酸化して二酸化炭素に変換する流体用反応部と、固体及
び液体のいずれの試料をも導入することができるボート
サンプラを有し、導入された試料に含まれる炭素を酸化
して二酸化炭素に変換する固体液体兼用反応部と、キャ
リアガスの流れを切り換えることにより、前記流体用反
応部で発生した二酸化炭素と前記固体液体兼用反応部で
発生した二酸化炭素のうちいずれを前記ガス分析手段へ
送るかを設定する切換手段と、を備えた構成としてい
る。In order to achieve the above object, according to the present invention, carbon contained in a sample is oxidized to be converted into carbon dioxide, and the amount of the carbon dioxide is determined by a gas analysis means to obtain the sample. In a carbon amount measuring device for measuring the amount of carbon contained in, a fluid sample introducing mechanism for introducing a fluid sample, and a fluid reaction unit for oxidizing carbon contained in the introduced fluid sample to convert it into carbon dioxide. , Having a boat sampler that can introduce both solid and liquid samples, and a solid-liquid reaction section that oxidizes carbon contained in the introduced sample and converts it into carbon dioxide, and the flow of carrier gas By switching, it is set which of the carbon dioxide generated in the fluid reaction section and the carbon dioxide generated in the solid liquid reaction section is sent to the gas analysis means. It has a configuration comprising a switching means, a.
【００１０】[0010]
【作用】図１に示す構成の本発明の炭素量測定装置にお
いて、流体用反応部５１で発生する二酸化炭素をガス分
析手段５６へ送るようにキャリアガスの流れを切換手段
５４によって切り換え、試料を流体試料導入機構によっ
て流体用反応部５１に導入すれば、試料中の炭素が流体
用反応部５１で二酸化炭素に変換され、その二酸化炭素
がキャリアガスによってガス分析手段５６へ送られる。
他方、固体液体兼用反応部５２で発生する二酸化炭素を
ガス分析手段５６へ送るようにキャリアガスの流れを切
換手段５４によって切り換え、試料をボートサンプラよ
って固体液体兼用反応部５２に導入すれば、試料中の炭
素が固体液体兼用反応部５２で二酸化炭素に変換され、
その二酸化炭素がキャリアガスによってガス分析手段５
６へ送られる。このようにしてガス分析手段５６に送ら
れた二酸化炭素の量は、ガス分析手段５６によって測定
され、これにより試料中の炭素量が求められる。In the carbon content measuring apparatus of the present invention having the configuration shown in FIG. 1, the flow of the carrier gas is switched by the switching means 54 so that the carbon dioxide generated in the fluid reaction section 51 is sent to the gas analysis means 56, and the sample is sampled. When introduced into the fluid reaction section 51 by the fluid sample introduction mechanism, carbon in the sample is converted into carbon dioxide in the fluid reaction section 51, and the carbon dioxide is sent to the gas analysis means 56 by the carrier gas.
On the other hand, if the carrier gas flow is switched by the switching means 54 so that the carbon dioxide generated in the solid / liquid reaction section 52 is sent to the gas analysis means 56, and the sample is introduced into the solid / liquid reaction section 52 by the boat sampler, the sample The carbon in the inside is converted into carbon dioxide in the reaction part 52 which also serves as a solid liquid,
The carbon dioxide is converted into a gas by means of a carrier gas, which is gas analysis means 5
Sent to 6. The amount of carbon dioxide sent to the gas analysis means 56 in this way is measured by the gas analysis means 56, and the amount of carbon in the sample is obtained by this.
【００１１】したがって、懸濁物質の沈降速度があまり
速くない懸濁試料や通常の液体試料の場合には流体用反
応部５１を利用し、懸濁物質の沈降速度が速い懸濁試料
や固体試料の場合には固体液体兼用反応部５２を利用す
るというように、１台の装置で反応部を適宜切り換えて
測定することができる。Therefore, in the case of a suspension sample in which the sedimentation speed of the suspended substance is not very fast or a normal liquid sample, the reaction section 51 for fluid is used, and a suspension sample or a solid sample in which the sedimentation velocity of the suspended material is high. In such a case, the reaction section 52 that also serves as a solid liquid is used, and the reaction section can be appropriately switched and measured by one device.
【００１２】[0012]
【実施例】以下、図面を参照しつつ本発明の一実施例で
ある全有機体炭素計について説明する。図１に示した本
発明を構成する各ブロックの内部構成は、本実施例では
図２、図３、及び図４に示す通りである。すなわち、本
実施例では、図１における流体用反応部５１は図２に示
す構成、固体液体兼用反応部５２は図３に示す構成、ガ
ス分析手段５６は図４に示す構成となっている。また、
切換手段５４は図２のガス流量制御部１２に対応し、ボ
ンベ１１に充填されている酸素を流体用反応部（図２）
のＴＣ燃焼管１５に供給するか固体液体兼用反応部（図
３）のＴＣ燃焼管３２ａに供給するかを、ガス流量制御
部１２が制御する。これにより、流体用反応部（図２）
で発生した二酸化炭素と固体液体兼用反応部（図３）で
発生した二酸化炭素のうちいずれをガス分析手段（図
４）へ送るかを設定するという切換手段５４の機能を実
現している。以下、本実施例における各部の詳細につい
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An all-organic carbon meter which is an embodiment of the present invention will be described below with reference to the drawings. The internal configuration of each block constituting the present invention shown in FIG. 1 is as shown in FIGS. 2, 3 and 4 in this embodiment. That is, in the present embodiment, the fluid reaction section 51 in FIG. 1 has the configuration shown in FIG. 2, the solid / liquid reaction section 52 has the configuration shown in FIG. 3, and the gas analysis means 56 has the configuration shown in FIG. Also,
The switching means 54 corresponds to the gas flow rate control unit 12 of FIG. 2, and causes the oxygen filled in the cylinder 11 to react with the fluid (FIG. 2).
The gas flow rate control unit 12 controls whether the gas is supplied to the TC combustion pipe 15 of No. 2 or the TC combustion pipe 32a of the reaction unit that also serves as a solid liquid (FIG. 3). As a result, the reaction part for fluid (Fig. 2)
The function of the switching means 54 for setting which of the carbon dioxide generated in 1) and the carbon dioxide generated in the solid liquid reaction section (FIG. 3) to be sent to the gas analysis means (FIG. 4) is realized. The details of each unit in this embodiment will be described below.
【００１３】図２に示す流体用反応部の構成及び動作
は、基本的には図５に示した前述の流体試料専用の反応
部（従来例）と同様であり、ＴＣ燃焼管１５又はＩＣ反
応器１８で発生したＣＯ2は、除湿・ガス処理部２０を
通って図４のセル切換バルブ４９へ送られる。図２の流
体用反応部が従来と異なっているのは、ガス流量制御部
１２の機能である。このガス流量制御部１２は、ボンベ
１１に充填されている酸素を液体試料１０中の無機体炭
素（ＩＣ）を追い出すためのスパージガスとして試料容
器１７へ供給するのを制御するほか、前述のように図１
の切換手段５４としての機能を有している。すなわち、
ガス流量制御部１２には二者択一の切換弁があり、流体
用反応部を使用して測定する場合には、キャリアガスと
しての酸素を流体用反応部（ＴＣ燃焼管１５）へのみ供
給するとともに、必要に応じてスパージガスとしての酸
素を試料容器１７へも供給する。他方、固体液体兼用反
応部（図３）を使用して測定する場合には、固体液体兼
用反応部（ＴＣ燃焼管３２ａ）へのみ酸素をキャリアガ
スとして供給する。なお、このキャリアガスの一部は、
各反応部での燃焼（酸化）に使用される。The structure and operation of the fluid reaction section shown in FIG. 2 are basically the same as those of the reaction section dedicated to the fluid sample (conventional example) shown in FIG. 5, and the TC combustion tube 15 or the IC reaction is used. The CO 2 generated in the device 18 is sent to the cell switching valve 49 of FIG. 4 through the dehumidification / gas processing unit 20. 2 is different from the conventional one in the function of the gas flow rate control unit 12. The gas flow rate control unit 12 controls supplying oxygen filled in the cylinder 11 to the sample container 17 as a sparge gas for expelling inorganic carbon (IC) in the liquid sample 10, and as described above. Figure 1
It has a function as the switching means 54. That is,
The gas flow rate control unit 12 has a switching valve of two alternatives, and when measurement is performed using the fluid reaction unit, oxygen as a carrier gas is supplied only to the fluid reaction unit (TC combustion tube 15). At the same time, oxygen as a sparge gas is also supplied to the sample container 17 as needed. On the other hand, when the measurement is performed using the solid liquid / liquid reaction section (FIG. 3), oxygen is supplied as a carrier gas only to the solid / liquid reaction section (TC combustion tube 32a). In addition, a part of this carrier gas
Used for combustion (oxidation) in each reaction section.
【００１４】図３に示す固体液体兼用反応部は、ＴＣ反
応部及びＩＣ反応部と、ドレインセパレータ３７、干渉
ガス吸収器３６、及びフィルタ３８とから構成され、ド
レインセパレータ３７、干渉ガス吸収器３６、及びフィ
ルタ３８は、図２の除湿・ガス処理部２０に相当する。
そしてＴＣ反応部は、更に、試料導入棒３１ａ、ＴＣ燃
焼管３２ａ、触媒３３、及びＴＣ燃焼炉３４から構成さ
れ、ＩＣ反応部は、試料導入棒３１ｂ、ＩＣ反応管３２
ｂ、及びＩＣ用ヒータ３５から構成される。The solid / liquid reaction section shown in FIG. 3 comprises a TC reaction section and an IC reaction section, a drain separator 37, an interference gas absorber 36, and a filter 38. The drain separator 37, the interference gas absorber 36. , And the filter 38 correspond to the dehumidifying / gas treating unit 20 of FIG.
The TC reaction part is further composed of a sample introduction rod 31a, a TC combustion pipe 32a, a catalyst 33, and a TC combustion furnace 34, and an IC reaction part is a sample introduction rod 31b, an IC reaction pipe 32.
b and the IC heater 35.
【００１５】この固体液体兼用反応部を利用して測定す
る場合も、前述の従来例と同様、ＴＣ量及びＩＣ量を測
定した後にＴＣ量からＩＣ量を差し引くことによりＴＯ
Ｃ量を求める。この場合のＴＣ量の測定では、まず、ガ
ス流量制御部１２により、酸素がキャリアガスとして固
体液体兼用反応部へのみ供給され、流体用反応部へは流
れないように設定した状態で、ボートサンプラによって
試料をＴＣ燃焼管３２ａに導入する。すなわち、試料導
入棒３１ａの先端部はボートと呼ばれる舟形の試料容器
となっており、このボート３９ａに固体又は液体の試料
を装着して炉心（ＴＣ燃焼管３２ａの中）へ搬送する。
ＴＣ燃焼炉３４の温度は通常６８０℃〜９００℃であ
り、ＴＣ燃焼管３２ａ内において、試料に含まれる炭素
（ＴＣ）を燃焼酸化によってすべてＣＯ2に変換する。
このＣＯ2は、キャリアガスにより、ＮＯX等の干渉ガス
を吸収する干渉ガス吸収器３６、水蒸気を除去するドレ
インセパレータ３７、及びゴミを除去するフィルタ３８
を通って、図４のセル切換バルブ４９へ送られる。セル
切換バルブ４９へ送られたＣＯ2の量は、図４に示す構
成のガス分析手段（後述）によって測定され、これによ
り、ＴＣ量が求められる。なお、このとき発生したＣＯ
2はキャリアガスとともにＩＣ反応管３２ｂを通過する
が、この時点ではＩＣ反応管３２ｂ内で反応は行なわれ
ておらず、ＩＣ反応管３２ｂは単なる通過路になってい
るにすぎない。In the case of measurement using this reaction section that also serves as a solid liquid, as in the above-mentioned conventional example, the TO amount is calculated by subtracting the IC amount from the TC amount after measuring the TC amount and the IC amount.
Calculate the C content. In the measurement of the TC amount in this case, first, the gas flow rate control unit 12 supplies oxygen only as a carrier gas to the solid / liquid reaction unit and does not flow to the fluid reaction unit. The sample is introduced into the TC combustion tube 32a by. That is, the tip portion of the sample introduction rod 31a is a boat-shaped sample container called a boat, and a solid or liquid sample is mounted on the boat 39a and conveyed to the core (inside the TC combustion tube 32a).
The temperature of the TC combustion furnace 34 is usually 680 ° C. to 900 ° C., and all the carbon (TC) contained in the sample is converted into CO 2 by combustion oxidation in the TC combustion tube 32a.
This CO 2 is an interference gas absorber 36 that absorbs an interference gas such as NO X , a drain separator 37 that removes water vapor, and a filter 38 that removes dust by a carrier gas.
To the cell switching valve 49 of FIG. The amount of CO 2 sent to the cell switching valve 49 is measured by the gas analysis means (described later) having the configuration shown in FIG. 4, and the amount of TC is obtained from this. The CO generated at this time
Although 2 passes through the IC reaction tube 32b together with the carrier gas, no reaction is performed in the IC reaction tube 32b at this point, and the IC reaction tube 32b is merely a passage.
【００１６】他方、ＩＣ量の測定では、上記と同様に酸
素がキャリアガスとして固体液体兼用反応部へのみ供給
されるように設定した状態で、試料を試料導入棒３１ｂ
の先端部のボート３９ｂに装着してＩＣ反応管３２ｂの
中へ搬送する。ボート３９ｂに装着した試料には酸（リ
ン酸等）を添加し、ＩＣ反応管の温度を１００℃〜２０
０℃程度にして、試料を酸性化する。これにより、試料
に含まれる無機体炭素（ＩＣ）をすべてＣＯ2に変換す
る。このＣＯ2は、上記と同様、干渉ガス吸収器３６、
ドレインセパレータ３７、及びフィルタ３８を通って、
図４のセル切換バルブ４９へ送られ、図４のガス分析手
段により、ＩＣ量が求められる。なお、このときガス流
量制御部１２から送られてくるキャリアガスはＴＣ燃焼
管３２ａを通過するが、この時点ではＴＣ燃焼管３２ａ
内で燃焼は行なわれておらず、ＴＣ燃焼管３２ａは単な
る通過路になっているにすぎない。On the other hand, in the measurement of the IC amount, the sample is introduced into the sample introducing rod 31b in a state where oxygen is supplied as a carrier gas only to the reaction section which also serves as a solid liquid in the same manner as described above.
It is mounted on the boat 39b at the tip end of and is conveyed into the IC reaction tube 32b. An acid (phosphoric acid or the like) is added to the sample mounted on the boat 39b, and the temperature of the IC reaction tube is set to 100 ° C to 20 ° C.
The sample is acidified at about 0 ° C. As a result, all the inorganic carbon (IC) contained in the sample is converted into CO 2 . This CO 2 is generated by the interference gas absorber 36,
Through the drain separator 37 and the filter 38,
It is sent to the cell switching valve 49 of FIG. 4, and the IC amount is obtained by the gas analysis means of FIG. At this time, the carrier gas sent from the gas flow rate control unit 12 passes through the TC combustion pipe 32a.
No combustion is performed therein, and the TC combustion pipe 32a is merely a passage.
【００１７】図４に示すガス分析手段は、セル切換バル
ブ４９と、光源４４、セル４０、４１、及び検出器４３
より成る赤外線ガス分析部（ＮＤＩＲ）と、キーボード
２３及びディスプレイ２４が接続された制御部２２とか
ら構成される。本実施例のＮＤＩＲは、光路長の長いセ
ル４０と光路長の短いセル４１の二種類のセルを有して
おり、いずれのセルを用いてＣＯ2量を測定するかをセ
ル切換バルブ４９によって切り換えることができる。す
なわち、セル切換バルブ４９が実線の部分で導通してい
る場合は、流体用反応部が長光路長セル４０に接続さ
れ、固体液体兼用反応部が短光路長セル４１に接続され
る。そして、セル切換バルブ４９を切り換えて点線の部
分で導通するようにすると、各反応部と各セルとの接続
関係は逆になる。したがって、各反応部に接続するセル
の選択が可能となる。ここで一般に、長光路長のセルは
発生するＣＯ2の濃度が比較的薄い試料の測定に適して
おり、短光路長のセルはＣＯ2の濃度の比較的濃い試料
の測定に適している。よって、セル４０と４１の選択を
適切に行なえば、発生するＣＯ2の濃度が大きく異なる
試料に対しても１台の装置で正確な測定ができる。The gas analyzing means shown in FIG. 4 includes a cell switching valve 49, a light source 44, cells 40 and 41, and a detector 43.
The infrared gas analyzer (NDIR) and the controller 22 to which the keyboard 23 and the display 24 are connected. The NDIR of this embodiment has two types of cells, a cell 40 having a long optical path length and a cell 41 having a short optical path length, and a cell switching valve 49 determines which cell is used to measure the amount of CO 2 . It can be switched. That is, when the cell switching valve 49 is conducting in the portion indicated by the solid line, the fluid reaction section is connected to the long optical path length cell 40, and the solid / liquid reaction section is connected to the short optical path length cell 41. Then, when the cell switching valve 49 is switched so as to conduct electricity in the portion indicated by the dotted line, the connection relationship between each reaction portion and each cell is reversed. Therefore, it becomes possible to select the cell connected to each reaction part. Generally, a cell having a long optical path length is suitable for measuring a sample having a relatively low concentration of CO 2 , and a cell having a short optical path length is suitable for measuring a sample having a relatively high concentration of CO 2 . Therefore, if the cells 40 and 41 are appropriately selected, even one sample can accurately measure even samples having greatly different CO 2 concentrations.
【００１８】上記のＮＤＩＲで測定されたＣＯ2量のデ
ータは制御部２２へ送られ、従来と同様に正規化するこ
とにより、試料のＴＣ量及びＩＣ量が求められる。な
お、制御部２２は、本実施例の全有機体炭素計の各部の
操作も制御しており、例えば、ガス流量制御部１２（図
２）によるキャリアガスの流れの切り換えも、制御部２
２の制御の下に行なわれる。The data of the CO 2 amount measured by the above NDIR is sent to the control unit 22 and is normalized in the same manner as in the conventional case, whereby the TC amount and IC amount of the sample are obtained. Note that the control unit 22 also controls the operation of each unit of the all-organic carbon meter of the present embodiment. For example, switching of the flow of carrier gas by the gas flow rate control unit 12 (FIG. 2) is also controlled by the control unit 2.
It is performed under the control of 2.
【００１９】以上のように、本実施例の全有機体炭素計
によれば、図２に示した流体試料導入機構を備えた流体
用反応部と図３に示したボートサンプラを備えた固体液
体兼用反応部のいずれをも利用することができるので、
測定対象の試料に適した導入機構を有する反応部を使用
して測定することができる。しかも、使用しようとする
反応部を選択するための操作は、ガス流量制御部１２で
キャリアガスの流れを切り換えることにより（図２参
照）、容易に行なうことができる。また、本実施例の固
体液体兼用反応部は、ボートサンプラを備えた従来の反
応部とは異なり、ＴＣ反応部とＩＣ反応部とを兼用せず
別個に設けているので（図３参照）、固体試料等に対す
る測定を従来よりも迅速に行なうことができる。さら
に、セル切換バルブ４９を切り換えることにより、ＮＤ
ＩＲにおいて光路長の異なる二つのセルのうち測定対象
の試料に適したセルを選択できるので（図４参照）、発
生するＣＯ2の濃度が大きく異なる試料に対しても１台
の装置で正確な測定ができる。As described above, according to the all-organic carbon meter of this embodiment, the solid liquid including the fluid reaction section having the fluid sample introduction mechanism shown in FIG. 2 and the boat sampler shown in FIG. Since any of the dual-purpose reaction parts can be used,
It can be measured using a reaction part having an introduction mechanism suitable for the sample to be measured. Moreover, the operation for selecting the reaction section to be used can be easily performed by switching the flow of the carrier gas with the gas flow rate control section 12 (see FIG. 2). Further, unlike the conventional reaction section having the boat sampler, the reaction section for both solid and liquid of the present embodiment is provided separately without using both the TC reaction section and the IC reaction section (see FIG. 3). The measurement for a solid sample or the like can be performed more quickly than before. Further, by switching the cell switching valve 49, the ND
In IR, a cell suitable for the sample to be measured can be selected from the two cells having different optical path lengths (see FIG. 4), and therefore, even for a sample in which the concentration of CO 2 generated greatly differs, one device can accurately You can measure.
【００２０】[0020]
【発明の効果】以上説明した通り、本発明によれば、懸
濁物質の沈降速度があまり速くない懸濁試料や通常の液
体試料の場合には流体用反応部を利用し、懸濁物質の沈
降速度が速い懸濁試料や固体試料の場合には固体液体兼
用反応部を利用して炭素量を測定することができる。し
たがって、反応部を適宜切り換えれば、試料が固体か液
体か、懸濁試料における懸濁物質の沈降速度がどうかに
拘らず、従来に比べ測定の容易さや効率を損なうことな
く、１台の装置で種々の試料について炭素量の測定が可
能となる。As described above, according to the present invention, in the case of a suspension sample or an ordinary liquid sample in which the sedimentation speed of the suspended substance is not very high, the reaction part for fluid is used to In the case of a suspension sample or a solid sample having a fast settling rate, the carbon content can be measured by using the reaction section that also serves as a solid liquid. Therefore, if the reaction section is appropriately switched, regardless of whether the sample is a solid or a liquid, or the sedimentation rate of the suspended substance in the suspension sample, the ease and efficiency of the measurement can be reduced compared with the conventional one device. It is possible to measure the carbon content of various samples.
【図１】 本発明の構成を示すブロック図。FIG. 1 is a block diagram showing a configuration of the present invention.
【図２】 本発明の一実施例である全有機体炭素計の流
体用反応部の構成を示す図。FIG. 2 is a diagram showing a configuration of a fluid reaction part of the all-organic carbon meter according to one embodiment of the present invention.
【図３】 前記実施例の全有機体炭素計における固体液
体兼用反応部の構成を示す図。FIG. 3 is a diagram showing a configuration of a reaction section that also serves as a solid liquid in the all-organic carbon meter of the above-mentioned embodiment.
【図４】 前記実施例の全有機体炭素計におけるガス分
析手段の構成を示す図。FIG. 4 is a diagram showing a configuration of a gas analysis unit in the all-organic carbon meter of the above-mentioned embodiment.
【図５】 従来の全有機体炭素計の構成を示す図。FIG. 5 is a diagram showing a configuration of a conventional all-organic carbon meter.
１２…ガス流量制御部(切換手段) １３…ロータリバ
ルブ(流体試料導入機構) １４…試料注入器(流体試料導入機構) ３１ａ、３１ｂ…試料導入棒(ボートサンプラ) ３９ａ、３９ｂ…ボート(ボートサンプラ) ５１…流体用反応部 ５２…固体液体兼
用反応部 ５４…切換手段 ５６…ガス分析手
段12 ... Gas flow rate control unit (switching means) 13 ... Rotary valve (fluid sample introduction mechanism) 14 ... Sample injector (fluid sample introduction mechanism) 31a, 31b ... Sample introduction rod (boat sampler) 39a, 39b ... Boat (boat sampler) ) 51 ... Fluid reaction section 52 ... Solid liquid reaction section 54 ... Switching means 56 ... Gas analysis means
Claims (1)
素に変換し、該二酸化炭素の量をガス分析手段によって
求めることにより、前記試料に含まれる炭素量を測定す
る炭素量測定装置において、 流体試料を導入する流体試料導入機構を有し、導入され
た流体試料に含まれる炭素を酸化して二酸化炭素に変換
する流体用反応部と、 固体及び液体のいずれの試料をも導入することができる
ボートサンプラを有し、導入された試料に含まれる炭素
を酸化して二酸化炭素に変換する固体液体兼用反応部
と、 キャリアガスの流れを切り換えることにより、前記流体
用反応部で発生した二酸化炭素と前記固体液体兼用反応
部で発生した二酸化炭素のうちいずれを前記ガス分析手
段へ送るかを設定する切換手段と、を備えたことを特徴
とする炭素量測定装置。1. A carbon amount measuring device for measuring the amount of carbon contained in a sample by oxidizing carbon contained in the sample to convert it into carbon dioxide and determining the amount of the carbon dioxide by a gas analysis means, It has a fluid sample introduction mechanism for introducing a fluid sample, and a fluid reaction part for oxidizing carbon contained in the introduced fluid sample to convert it into carbon dioxide, and for introducing both solid and liquid samples. Carbon dioxide generated in the fluid reaction part by switching the carrier gas flow and the solid liquid reaction part that oxidizes the carbon contained in the introduced sample and converts it into carbon dioxide And a switching means for setting which of the carbon dioxide generated in the solid / liquid reaction section is to be sent to the gas analysis means. Place
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04154441A JP3111647B2 (en) | 1992-05-20 | 1992-05-20 | Carbon content measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04154441A JP3111647B2 (en) | 1992-05-20 | 1992-05-20 | Carbon content measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05322874A true JPH05322874A (en) | 1993-12-07 |
| JP3111647B2 JP3111647B2 (en) | 2000-11-27 |
Family
ID=15584272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04154441A Expired - Lifetime JP3111647B2 (en) | 1992-05-20 | 1992-05-20 | Carbon content measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3111647B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034569A (en) * | 2014-06-18 | 2014-09-10 | 中国石油化工股份有限公司 | Organic carbon negative-pressure drip-washing device |
| JP2015225063A (en) * | 2014-05-30 | 2015-12-14 | 株式会社島津製作所 | Water quality analyzer |
-
1992
- 1992-05-20 JP JP04154441A patent/JP3111647B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015225063A (en) * | 2014-05-30 | 2015-12-14 | 株式会社島津製作所 | Water quality analyzer |
| CN104034569A (en) * | 2014-06-18 | 2014-09-10 | 中国石油化工股份有限公司 | Organic carbon negative-pressure drip-washing device |
| CN104034569B (en) * | 2014-06-18 | 2017-04-05 | 中国石油化工股份有限公司 | Organic carbon negative pressure elution device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3111647B2 (en) | 2000-11-27 |
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