JP3133856U - Total organic carbon meter - Google Patents

Total organic carbon meter Download PDF

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JP3133856U
JP3133856U JP2007003444U JP2007003444U JP3133856U JP 3133856 U JP3133856 U JP 3133856U JP 2007003444 U JP2007003444 U JP 2007003444U JP 2007003444 U JP2007003444 U JP 2007003444U JP 3133856 U JP3133856 U JP 3133856U
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carbon dioxide
concentration
carbon
total organic
organic carbon
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美奈子 田中
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Shimadzu Corp
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Abstract

【課題】全有機体炭素の分析における検出限界が従来よりも良好な全有機体炭素計を提供する。
【解決手段】試料液１１中の無機体炭素成分が除かれた液体は、電気炉６により加熱された燃焼管５中において燃焼酸化触媒５ａおよび高純度空気のキャリアガス１６の存在下で高温で酸化され、二酸化炭素に変換される。この二酸化炭素は、キャリアガス１６と共に常温に制御された濃縮部７に導入され、濃縮部７内の吸着剤に吸着される。以上の工程を所定の回数行うことにより、濃縮部７内の吸着剤に所定の回数だけ二酸化炭素が吸着する。次に、濃縮部７の温度はキャリアガス１６の存在下で高温に制御され、その内部の吸着剤に所定の回数だけ吸着した二酸化炭素が脱離し、キャリアガス１６と共に赤外線ガス分析部８に送られ、濃縮された二酸化炭素の濃度が測定される。
【選択図】 図１To provide a total organic carbon meter having a detection limit in the analysis of total organic carbon better than before.
The liquid from which the inorganic carbon component in the sample liquid 11 is removed is heated at a high temperature in a combustion tube 5 heated by an electric furnace 6 in the presence of a combustion oxidation catalyst 5a and a carrier gas 16 of high-purity air. Oxidized and converted to carbon dioxide. The carbon dioxide is introduced together with the carrier gas 16 into the concentrating unit 7 controlled at room temperature, and is adsorbed by the adsorbent in the concentrating unit 7. By performing the above steps a predetermined number of times, carbon dioxide is adsorbed to the adsorbent in the concentration unit 7 a predetermined number of times. Next, the temperature of the concentration unit 7 is controlled to a high temperature in the presence of the carrier gas 16, and carbon dioxide adsorbed a predetermined number of times by the adsorbent therein is desorbed and sent to the infrared gas analysis unit 8 together with the carrier gas 16. And the concentration of the concentrated carbon dioxide is measured.
[Selection] Figure 1

Description

本考案は、純水、用水、排水、上水、環境水などから採取された試料液中の全有機体炭素濃度を分析する全有機体炭素計に関する。   The present invention relates to a total organic carbon meter that analyzes the total organic carbon concentration in a sample solution collected from pure water, irrigation water, waste water, clean water, environmental water, and the like.

全有機体炭素濃度を分析する方法として、全炭素濃度と無機体炭素濃度を分析してその差から全有機体炭素濃度を求める方法と、試料中の無機体炭素を除去してから全炭素濃度を分析し全有機体炭素濃度を求める方法などがある。   The total organic carbon concentration is analyzed by analyzing the total carbon concentration and the inorganic carbon concentration and obtaining the total organic carbon concentration from the difference between them, and removing the inorganic carbon in the sample and then the total carbon concentration. And the total organic carbon concentration is determined.

試料中の無機体炭素を除去してから全炭素濃度を分析する全有機体炭素計は、図３に示すように、モータ１ｍで駆動される８方弁１とシリンジ２と電磁弁３で構成される試料採取部ＳＯと、試料注入部４、燃焼管５、電気炉６、赤外線ガス分析部８および制御演算部９などで構成される。このような全有機体炭素計による全有機体炭素の分析は、通常、次のように行われる。先ず試料採取部ＳＯでは、シリンジ２が８方弁１を介して一定量の試料液１１を吸引し、さらに８方弁１のポートを切り換えて希塩酸などの酸１２を吸引後、電磁弁３を開いて、この液中に高純度空気のスパージガス１５を放出する。液中の無機体炭素は酸１２と反応し、生成した二酸化炭素がスパージガス１５と共に８方弁１を介して大気中に放出される。このようにして液中の無機体炭素が除去される。   The total organic carbon meter that analyzes the total carbon concentration after removing inorganic carbon from the sample is composed of an 8-way valve 1, a syringe 2, and an electromagnetic valve 3 driven by a motor 1m, as shown in FIG. The sample collection unit SO, the sample injection unit 4, the combustion tube 5, the electric furnace 6, the infrared gas analysis unit 8, and the control calculation unit 9 are included. The analysis of the total organic carbon by such a total organic carbon meter is usually performed as follows. First, in the sample collection unit SO, the syringe 2 sucks a predetermined amount of the sample solution 11 through the 8-way valve 1, and further switches the port of the 8-way valve 1 to suck the acid 12 such as dilute hydrochloric acid, and then the electromagnetic valve 3 is turned on. Open and release a sparge gas 15 of high purity air into this liquid. The inorganic carbon in the liquid reacts with the acid 12, and the generated carbon dioxide is released into the atmosphere through the 8-way valve 1 together with the sparge gas 15. In this way, inorganic carbon in the liquid is removed.

次に無機体炭素が除去された液は、シリンジ２により８方弁１を介して試料注入部４に送出され燃焼管５に注入される。この燃焼管５の中で前記液は、燃焼酸化触媒５ａおよびキャリアガス１６の存在下で電気炉６により高温で酸化され、液中の有機体炭素は全て二酸化炭素に変換される。この二酸化炭素はキャリアガス１６と共に赤外線ガス分析部８に導入され二酸化炭素濃度が測定される。制御演算部９は、この二酸化炭素濃度と別途測定した標準液１３の二酸化炭素濃度と比較し全有機体炭素濃度を求める。   Next, the liquid from which the inorganic carbon has been removed is sent to the sample injection unit 4 via the 8-way valve 1 by the syringe 2 and injected into the combustion tube 5. In the combustion pipe 5, the liquid is oxidized at a high temperature by the electric furnace 6 in the presence of the combustion oxidation catalyst 5a and the carrier gas 16, and all organic carbon in the liquid is converted into carbon dioxide. The carbon dioxide is introduced into the infrared gas analyzer 8 together with the carrier gas 16 and the carbon dioxide concentration is measured. The control calculation unit 9 obtains the total organic carbon concentration by comparing the carbon dioxide concentration with the carbon dioxide concentration of the standard solution 13 separately measured.

キーボードのブランクチェックキーを押すだけで、制御演算器に格納された制御プログラムに設けられたブランクチェックプログラムに基づき、希釈水あるいは希塩酸の空測定を自動的に行い、繰り返し測定と安定度の判定が自動的に行われ、分析者の手間を省き、経験の差に関係なく安定したブランクチェックを行うことができる全有機体炭素計を提供する（例えば特許文献１参照）。
特開２００１−３１８０８９号公報 By simply pressing the blank check key on the keyboard, based on the blank check program provided in the control program stored in the control arithmetic unit, the blank measurement of diluted water or dilute hydrochloric acid is automatically performed, and repeated measurement and stability determination are performed. Provided is an all-organic carbon meter that is automatically performed, saves the labor of an analyst, and can perform a stable blank check regardless of experience differences (see, for example, Patent Document 1).
JP 2001-318089 A

全有機体炭素濃度が低い試料を分析する場合は、試料量を多くする必要があるが、高温の燃焼管５内に大量の試料を注入すると、液体試料の気化により燃焼管５内は非常に高圧になる。その圧力によりキャリアガス１６の流量が変動し赤外線ガス分析部８で安定に測定できなくなるため、通常の全有機体炭素計では、その試料量は最大２ｍＬ程度であり、従来の検出限界は例えば４ｐｐｂ程度である。本考案が解決しようとする課題は、全有機体炭素の分析における検出限界が従来よりも良好な全有機体炭素計を提供することにある。   When analyzing a sample having a low total organic carbon concentration, it is necessary to increase the amount of the sample. However, when a large amount of sample is injected into the high-temperature combustion tube 5, the inside of the combustion tube 5 is very much due to vaporization of the liquid sample. Become high pressure. The flow rate of the carrier gas 16 fluctuates due to the pressure and cannot be stably measured by the infrared gas analyzer 8. Therefore, in a normal total organic carbon meter, the sample amount is about 2 mL at the maximum, and the conventional detection limit is, for example, 4 ppb. Degree. The problem to be solved by the present invention is to provide a total organic carbon meter having a detection limit in the analysis of total organic carbon better than before.

液体試料をキャリアガスと共に酸化触媒のもと燃焼させ二酸化炭素に変換する全炭素燃焼管と二酸化炭素濃度を測定する赤外線ガス分析部とを含む全有機体炭素計において、前記赤外線ガス分析部で測定される二酸化炭素濃度を濃縮する濃縮手段を備える。この濃縮手段は二酸化炭素の吸着剤への吸着制御手段と二酸化炭素の吸着剤からの脱離制御手段で構成される。したがって、試料の注入を複数回行い二酸化炭素を累積して吸着させた後、脱離させることにより二酸化炭素を濃縮して赤外線ガス分析部に導入できる。   Measured by the infrared gas analyzer in an all-organic carbon meter including a total carbon combustion tube that burns a liquid sample together with a carrier gas under an oxidation catalyst to convert it into carbon dioxide and an infrared gas analyzer that measures the carbon dioxide concentration Concentration means for concentrating the carbon dioxide concentration to be produced. This concentrating means is composed of adsorption control means for adsorbing carbon dioxide and desorption control means for removing carbon dioxide from the adsorbent. Therefore, after injecting the sample a plurality of times and accumulating and adsorbing carbon dioxide, the carbon dioxide can be concentrated and introduced into the infrared gas analyzer by desorption.

燃焼ガスあるいは反応ガス中の二酸化炭素を濃縮してから赤外線ガス分析部に導入し、測定するため、全有機体炭素の分析における検出限界が従来よりも良好な全有機体炭素計を提供することができる。   To provide a total organic carbon meter with a better detection limit in the analysis of total organic carbon, because carbon dioxide in the combustion gas or reaction gas is concentrated before being introduced into the infrared gas analyzer and measured. Can do.

二酸化炭素の吸着剤は、例えばモレキュラーシーブスまたはゼオライトなどで構成される。また、二酸化炭素の吸着剤からの脱離制御手段は吸着剤の温度制御手段で構成される。   The carbon dioxide adsorbent is composed of, for example, molecular sieves or zeolite. Further, the desorption control means for carbon dioxide from the adsorbent is constituted by an adsorbent temperature control means.

本考案の実施例について図１、図２を参照して説明する。図１は、本考案の実施例による全有機体炭素計の詳細構成図である。図２は、実施例の全有機体炭素計における濃縮分析のフローチャートである。本考案の全有機体炭素計は、図１に示すように、８方弁１とシリンジ２および電磁弁３で構成される試料採取部ＳＯと、試料注入部４、燃焼管５、電気炉６、濃縮部７、赤外線ガス分析部８、制御演算部９、キーボード１０、ガス流量制御器１７などから構成される。   An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a detailed configuration diagram of an all-organic carbon meter according to an embodiment of the present invention. FIG. 2 is a flowchart of concentration analysis in the total organic carbon meter of the example. As shown in FIG. 1, the total organic carbon meter of the present invention includes a sample collection part SO composed of an 8-way valve 1, a syringe 2 and an electromagnetic valve 3, a sample injection part 4, a combustion tube 5, and an electric furnace 6. , A concentration unit 7, an infrared gas analysis unit 8, a control calculation unit 9, a keyboard 10, a gas flow rate controller 17, and the like.

８方弁１は、制御演算部９により制御されるモータ１ｍにより８つのポートが切り換えられ、シリンジ２によって吸引される液体の種類や送出先を選択する。シリンジ２は、制御演算部９により制御されるモータ２ｂにより駆動されるピストン２ａにより液体の吸入および送出を行う。試料注入部４は、制御演算部９により制御されるモータ４ｂにより駆動され、流路１８の接続先として燃焼管５またはドレンを選択する。燃焼管５は、その内部に燃焼酸化触媒５ａが配設され、電気炉６により高温（例えば６３０℃）に加熱されている。濃縮部７は、その内部に二酸化炭素の吸着剤（例えばモレキュラーシーブス）が配設され、その外側には内部の温度を常温または高温に制御する例えばペルチェ素子で構成される温度制御器が配設されている。この温度制御器は制御演算部９により制御される。赤外線ガス分析部８は、非分散形赤外分析計で構成され二酸化炭素の濃度を測定する。   In the 8-way valve 1, eight ports are switched by the motor 1m controlled by the control calculation unit 9, and the type of liquid sucked by the syringe 2 and the delivery destination are selected. The syringe 2 sucks and delivers liquid by a piston 2a driven by a motor 2b controlled by the control calculation unit 9. The sample injection unit 4 is driven by the motor 4 b controlled by the control calculation unit 9 and selects the combustion tube 5 or the drain as the connection destination of the flow path 18. The combustion tube 5 has a combustion oxidation catalyst 5a disposed therein, and is heated to a high temperature (for example, 630 ° C.) by an electric furnace 6. The concentrating unit 7 has a carbon dioxide adsorbent (for example, molecular sieves) disposed therein, and a temperature controller composed of, for example, a Peltier element for controlling the internal temperature at room temperature or high temperature. Has been. This temperature controller is controlled by the control calculation unit 9. The infrared gas analyzer 8 is a non-dispersive infrared analyzer and measures the concentration of carbon dioxide.

全有機体炭素濃度の濃縮分析は図２に示すように行われる。操作者はキーボード１０より吸着の回数Ｎを入力し、濃縮分析スタートの指示をする。制御演算部９はキーボード１０からの信号に基づいて、全有機体炭素計を制御して次のように濃縮分析を行う（ステップＳ１）。   Concentration analysis of total organic carbon concentration is performed as shown in FIG. The operator inputs the number of adsorptions N from the keyboard 10 and instructs the start of concentration analysis. Based on the signal from the keyboard 10, the control calculation unit 9 controls the total organic carbon meter and performs the concentration analysis as follows (step S1).

次のステップ２からステップ４が試料採取部ＳＯにおいて実行される。図１に示すように先ず、８方弁１のポート１ｂをコモンポート１ｐ側に切り換え、シリンジ２で一定量の試料液１１を吸入後、ポート１ｄをコモンポート１ｐ側に切り換えてシリンジ２内の試料液１１のｐＨがほぼ２になるよう酸１２を吸引する（ステップＳ２）。次いで、ポート１ｆをコモンポート１ｐ側に切り換えると共に、電磁弁３を開いてガス流量制御器１７から供給される高純度空気のスパージガス１５をシリンジ２内の試料液１１中に放出し、試料液１１中の無機体炭素を酸１２と反応させて生成した二酸化炭素をスパージガス１５と共に大気中に放出する（ステップＳ３）。続いて、ポート１ｇをコモンポート１ｐ側に切り換えてシリンジ２内の試料液１１を試料注入部４に送出する（ステップ４）。   The following steps 2 to 4 are executed in the sample collection unit SO. As shown in FIG. 1, first, the port 1b of the 8-way valve 1 is switched to the common port 1p side, and after inhaling a certain amount of sample liquid 11 with the syringe 2, the port 1d is switched to the common port 1p side. The acid 12 is sucked so that the pH of the sample solution 11 is approximately 2 (step S2). Next, the port 1 f is switched to the common port 1 p side, the solenoid valve 3 is opened, and the high-purity air sparge gas 15 supplied from the gas flow controller 17 is released into the sample solution 11 in the syringe 2. Carbon dioxide produced by reacting the inorganic carbon in the medium with the acid 12 is released into the atmosphere together with the sparge gas 15 (step S3). Subsequently, the port 1g is switched to the common port 1p side, and the sample solution 11 in the syringe 2 is sent to the sample injection unit 4 (step 4).

この試料液１１中の無機体炭素成分が除かれた液体は、電気炉６により加熱された燃焼管５中において燃焼酸化触媒５ａおよび高純度空気のキャリアガス１６の存在下で高温で酸化され、液体中の有機体炭素が二酸化炭素に変換される（ステップＳ５）。この二酸化炭素は、キャリアガス１６と共に図示しないガス除湿冷却部を通過後、常温に制御された濃縮部７に導入され、濃縮部７内の吸着剤に吸着される（ステップＳ６）。Ｎから１を引く（ステップＳ７）。Ｎ＝０でない場合は、ステップＳ２へ戻り、Ｎ＝０の場合は、濃縮部７内の吸着剤にステップＳ１で入力した回数だけ二酸化炭素が吸着されており、ステップＳ９へ進む（ステップＳ８）。   The liquid from which the inorganic carbon component in the sample liquid 11 is removed is oxidized in the combustion tube 5 heated by the electric furnace 6 at a high temperature in the presence of the combustion oxidation catalyst 5a and the carrier gas 16 of high purity air, Organic carbon in the liquid is converted into carbon dioxide (step S5). The carbon dioxide passes through a gas dehumidifying and cooling unit (not shown) together with the carrier gas 16, and is then introduced into the concentrating unit 7 controlled to room temperature and adsorbed by the adsorbent in the concentrating unit 7 (step S6). 1 is subtracted from N (step S7). If N = 0, the process returns to step S2, and if N = 0, the adsorbent in the concentrating unit 7 has adsorbed carbon dioxide as many times as input in step S1, and the process proceeds to step S9 (step S8). .

次に、濃縮部７の温度はキャリアガス１６の存在下で常温から高温に制御され、その内部の吸着剤に所定の回数だけ吸着した二酸化炭素が脱離する（ステップＳ９）。脱離した二酸化炭素はキャリアガス１６と共に赤外線ガス分析部８に送られ、その濃度が測定される（ステップＳ１０）。この二酸化炭素濃度より制御演算部９は試料液１１中の全有機体炭素濃度を算出する（ステップＳ１１）。   Next, the temperature of the concentration unit 7 is controlled from room temperature to high temperature in the presence of the carrier gas 16, and carbon dioxide adsorbed a predetermined number of times on the adsorbent inside is desorbed (step S9). The desorbed carbon dioxide is sent to the infrared gas analyzer 8 together with the carrier gas 16, and the concentration thereof is measured (step S10). From this carbon dioxide concentration, the control calculation unit 9 calculates the total organic carbon concentration in the sample liquid 11 (step S11).

なお、全有機体炭素計の校正は、次のように行われる。ポート１ｃをコモンポート１ｐ側に切り換えてシリンジ２で一定量の標準液１３を吸入した後、ポート１ｇをコモンポート１ｐ側に切り換えてシリンジ２内の標準液１３を試料注入部４に送出する。この標準液１３は燃焼管５中で二酸化炭素に変換される。この二酸化炭素は、キャリアガス１６と共に図示しないガス除湿冷却部と高温に制御された濃縮部７を通過後、赤外線ガス分析部８に送られ、二酸化炭素の濃度が測定される。この濃度より制御演算部９は検量線を作成する。   The total organic carbon meter is calibrated as follows. After the port 1c is switched to the common port 1p side and a certain amount of standard solution 13 is inhaled by the syringe 2, the port 1g is switched to the common port 1p side and the standard solution 13 in the syringe 2 is sent to the sample injection unit 4. This standard solution 13 is converted into carbon dioxide in the combustion tube 5. The carbon dioxide passes through a gas dehumidifying and cooling unit (not shown) together with the carrier gas 16 and the concentrating unit 7 controlled to a high temperature, and then sent to the infrared gas analyzing unit 8 to measure the concentration of carbon dioxide. From this concentration, the control calculation unit 9 creates a calibration curve.

また、前回使用の試料液１１の影響を除去するには、流路１８をドレン側に切り換えると共に、ポート１ｅをコモンポート１ｐ側に切り換えてシリンジ２で純水１４を吸入した後、ポート１ｇをコモンポート１ｐ側に切り換えてシリンジ２内の純水１４を流路１８からドレンに流して洗浄を行う。   Further, in order to remove the influence of the sample solution 11 used last time, the flow path 18 is switched to the drain side, the port 1e is switched to the common port 1p side, the pure water 14 is sucked by the syringe 2, and the port 1g is then switched. Switching to the common port 1p side, the pure water 14 in the syringe 2 is caused to flow from the flow path 18 to the drain to perform cleaning.

本考案は、以上の構成であるから、燃焼管５内で試料液１１から生起する二酸化炭素を複数回濃縮部７内の吸着剤に吸着させた後、吸着剤から脱離させる。この脱離した二酸化炭素は濃縮されており、この二酸化炭素を赤外線ガス分析部８に導入して測定するため、全有機体炭素の分析における検出限界が従来よりも良好な全有機体炭素計を提供することができる。   Since the present invention has the above-described configuration, carbon dioxide generated from the sample liquid 11 in the combustion tube 5 is adsorbed to the adsorbent in the concentrating unit 7 a plurality of times and then desorbed from the adsorbent. Since the desorbed carbon dioxide is concentrated and this carbon dioxide is introduced into the infrared gas analyzer 8 for measurement, a total organic carbon meter with a better detection limit in the analysis of total organic carbon than in the past is used. Can be provided.

図１に示す実施例においては、試料液１１中の無機体炭素を除去してから試料液１１中の全炭素濃度を分析し、これを全有機体炭素濃度としているが、無機体炭素濃度と全炭素濃度を共に分析し、その差から全有機体炭素濃度を求める方式の全有機体炭素計においても本考案は適用可能である。この場合、全有機体炭素計は試料注入器と、無機体炭素反応器と、燃焼管５と、電気炉６と、濃縮部７と、赤外線ガス分析部８と、制御演算部９などで構成される。試料注入器により無機体反応容器に所定回数注入される試料から生起する二酸化炭素は所定回数濃縮部７の吸着剤に吸着される。その後、脱離した二酸化炭素は赤外線ガス分析部８でその濃度が測定され、制御演算部９で無機体炭素濃度に変換される。一方、試料注入器により燃焼管５に所定回数注入される試料から生起する二酸化炭素も同様に濃縮され、赤外線ガス分析部８でその濃度が測定され、制御演算部９で全炭素濃度に変換される。この全炭素濃度と無機体炭素濃度の差から全有機体炭素濃度が求められる。このように、本考案は図１に示す実施例以外にも適用可能であり装置は図示例に限定されない。   In the embodiment shown in FIG. 1, the inorganic carbon in the sample liquid 11 is removed, and then the total carbon concentration in the sample liquid 11 is analyzed to obtain the total organic carbon concentration. The present invention can also be applied to a total organic carbon meter that analyzes the total carbon concentration together and determines the total organic carbon concentration from the difference. In this case, the total organic carbon meter is composed of a sample injector, an inorganic carbon reactor, a combustion tube 5, an electric furnace 6, a concentration unit 7, an infrared gas analysis unit 8, a control calculation unit 9, and the like. Is done. Carbon dioxide generated from the sample injected into the inorganic reaction container a predetermined number of times by the sample injector is adsorbed by the adsorbent of the concentration unit 7 a predetermined number of times. Thereafter, the concentration of the desorbed carbon dioxide is measured by the infrared gas analyzer 8 and converted to an inorganic carbon concentration by the control calculator 9. On the other hand, the carbon dioxide generated from the sample injected into the combustion tube 5 a predetermined number of times by the sample injector is also concentrated, and its concentration is measured by the infrared gas analyzer 8 and converted to the total carbon concentration by the control calculator 9. The The total organic carbon concentration is obtained from the difference between the total carbon concentration and the inorganic carbon concentration. Thus, the present invention can be applied to other than the embodiment shown in FIG. 1, and the apparatus is not limited to the illustrated example.

本考案は、純水、用水、排水、上水、環境水などから採取された試料液中の全有機体炭素濃度を分析する全有機体炭素計に関する。   The present invention relates to a total organic carbon meter that analyzes the total organic carbon concentration in a sample solution collected from pure water, irrigation water, waste water, clean water, environmental water, and the like.

本考案の実施例による全有機体炭素計の詳細構成図である。It is a detailed block diagram of the total organic carbon meter by the Example of this invention. 実施例の全有機体炭素計における濃縮分析のフローチャートである。It is a flowchart of the concentration analysis in the total organic carbon meter of an Example. 従来の全有機体炭素計の構成図である。It is a block diagram of the conventional all-organic carbon meter.

符号の説明Explanation of symbols

１ ８方弁
１ｂ ポート
１ｃ ポート
１ｄ ポート
１ｅ ポート
１ｆ ポート
１ｇ ポート
１ｐ コモンポート
１ｍ モータ
２ シリンジ
２ａ ピストン
２ｂ モータ
３ 電磁弁
４ 試料注入部
４ｂ モータ
５ 燃焼管
５ａ 燃焼酸化触媒
６ 電気炉
７ 濃縮部
８ 赤外線ガス分析部
９ 制御演算部
１０ キーボード
１１ 試料液
１２ 酸
１３ 標準液
１４ 純水
１５ スパージガス
１６ キャリアガス
１７ ガス流量制御器
１８ 流路
ＳＯ 試料採取部 1 8-way valve 1b Port 1c Port 1d Port 1e Port 1f Port 1g Port 1p Common port 1m Motor 2 Syringe 2a Piston 2b Motor 3 Solenoid valve 4 Sample injection part 4b Motor 5 Combustion tube 5a Combustion oxidation catalyst 6 Electric furnace 7 Concentration part 8 Infrared gas analysis unit 9 Control calculation unit 10 Keyboard 11 Sample solution 12 Acid 13 Standard solution 14 Pure water 15 Sparge gas 16 Carrier gas 17 Gas flow rate controller 18 Channel SO Sample collection unit

Claims (2)

液体試料をキャリアガスと共に酸化触媒のもと燃焼させ二酸化炭素に変換する全炭素燃焼管と二酸化炭素濃度を測定する赤外線ガス分析部とを含む全有機体炭素計において、前記赤外線ガス分析部で測定される二酸化炭素濃度を濃縮する濃縮手段を備えたことを特徴とする全有機体炭素計。   Measured by the infrared gas analyzer in an all-organic carbon meter including a total carbon combustion tube that burns a liquid sample together with a carrier gas under an oxidation catalyst to convert it into carbon dioxide and an infrared gas analyzer that measures the carbon dioxide concentration A total organic carbon meter, comprising a concentration means for concentrating the carbon dioxide concentration. 濃縮手段は二酸化炭素の吸着剤への吸着制御手段と二酸化炭素の吸着剤からの脱離制御手段で構成されることを特徴とする請求項１記載の全有機体炭素計。
2. The total organic carbon meter according to claim 1, wherein the concentrating means comprises an adsorption control means for adsorbing carbon dioxide and a desorption control means for removing carbon dioxide from the adsorbent.
JP2007003444U 2007-05-14 2007-05-14 Total organic carbon meter Expired - Fee Related JP3133856U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011220915A (en) * 2010-04-13 2011-11-04 Shimadzu Corp Air purifier and total organic carbon measuring device using the same
KR20150077012A (en) * 2013-12-27 2015-07-07 (주) 휴마스 Apparatus for Analyzing of Total Organic Carbon and Method for Analyzing the Same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011220915A (en) * 2010-04-13 2011-11-04 Shimadzu Corp Air purifier and total organic carbon measuring device using the same
KR20150077012A (en) * 2013-12-27 2015-07-07 (주) 휴마스 Apparatus for Analyzing of Total Organic Carbon and Method for Analyzing the Same
KR101587559B1 (en) * 2013-12-27 2016-01-27 (주) 휴마스 Apparatus for Analyzing of Total Organic Carbon and Method for Analyzing the Same

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