JPH0614038B2 - Total Volatile Organic Compound Analyzer - Google Patents
Total Volatile Organic Compound AnalyzerInfo
- Publication number
- JPH0614038B2 JPH0614038B2 JP22639884A JP22639884A JPH0614038B2 JP H0614038 B2 JPH0614038 B2 JP H0614038B2 JP 22639884 A JP22639884 A JP 22639884A JP 22639884 A JP22639884 A JP 22639884A JP H0614038 B2 JPH0614038 B2 JP H0614038B2
- Authority
- JP
- Japan
- Prior art keywords
- volatile organic
- compound
- vaporization
- neutral
- 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.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
- G01N33/1826—Organic contamination in water
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Molecular Biology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
【発明の詳細な説明】 イ．技術の利用分野 本発明は、水溶液に含まれる揮発性有機炭素を分析する
装置に関する。Detailed Description of the Invention a. TECHNICAL FIELD The present invention relates to an apparatus for analyzing volatile organic carbon contained in an aqueous solution.
ロ．従来技術 工業用水や環境水の水質管理には、水溶液に含まれる全
無機炭素量と全有機炭素量に大別するとともに、全有機
炭素量を揮発性有機化合物と不揮発性有機化合物に弁別
して測定することが行なわれている。B. Prior art For the quality control of industrial water and environmental water, the total amount of inorganic carbon and the total amount of organic carbon contained in the aqueous solution are roughly classified, and the total amount of organic carbon is measured by discriminating between volatile organic compounds and non-volatile organic compounds. Is being done.
ところで、水質管理の多用化に伴ない、この揮発性有機
化合物をさらに中性化合物、酸性化合物、及び塩基性化
合物の３種類に分類して木目細かく測定できる装置が望
まれていた。Incidentally, with the diversification of water quality management, there has been a demand for an apparatus capable of finely measuring the volatile organic compounds by further classifying them into three types of neutral compounds, acidic compounds, and basic compounds.
ハ．目的 本発明はこのような事情に鑑み、揮発性有機化合物を中
性、酸性、及び塩基性の３種類に弁別して検出すること
ができる新規な分析装置を提供することを目的とする。C. In view of such circumstances, an object of the present invention is to provide a novel analyzer capable of discriminating and detecting a volatile organic compound into three types of neutral, acidic, and basic.
ニ．発明の構成 すなわち、本発明の特徴とするところは、中性化合物、
酸性化合物、及び塩基性化合物を個々に充填した気化管
を用いた点にある。D. That is, the features of the present invention include a neutral compound,
The point is that vaporization tubes individually filled with an acidic compound and a basic compound are used.
ヘ．実施例 そこで、以下に本発明の詳細を図示した実施例に基づい
て説明する。F. Examples Therefore, details of the present invention will be described below based on illustrated examples.
第１図は、本発明の一実施例を示す装置の構成図であっ
て、図中符号１、２、３は、上部に切換弁４を介して空
気源５に接続する空気導入口、及び試料注入口1a、2a、3a
が、また下端に生成ガス排出口を設けた第１、第２、及
び第３の気化管であって、第１の気化管１に石英等の中
性坦体Ａが、第２の気化管２には水酸化リチウム（Ｌｉ
ＯＨ）等の塩基性化合物Ｂと中性坦体Ａが、また第３の
気化管３にはリン酸（Ｈ３ＰＯ４）や硫酸（Ｈ２Ｓ
Ｏ４）等の酸性化合物Ｃと中性坦体Ａを充填して構成さ
れている。６は、気化管１、２、３を収容する恒温槽
で、試料に含まれる揮発性有機物をガス化させる程度の
温度に制御されている。７は、一側が加熱配管８により
第１、第２、及び第３の気化管１、２、３の下端に、他
側がパイプにより後述する炭酸ガス検出器１０に連通す
る揮発性有機炭素燃焼管で、内部に酸化触媒Ｄを充填し
て構成されている。９は、揮発性有機炭素燃焼管７を収
容する高温炉で、気化管１、２、３からのガスを酸化し
て炭酸ガスに変換できる程度の温度に制御されている。
１０は、前述した炭酸ガス検出器で、燃焼管７からのガ
スが流入する試料セル１０ａと空気源５から切換弁４に
亘る管路に接続する比較セル１０ｂを備え、燃焼管７で
発生した炭酸ガスと空気中の炭酸ガスの濃度の差分を検
出するように構成されている。なお、図中符号１１、１
２は、それぞれ燃焼管７とガス検出器１０を結ぶ管路に
設けた除湿器及びフィルタを、１３は、ガス検出器１０
からの信号を処理する信号処理装置を示す。FIG. 1 is a configuration diagram of an apparatus showing an embodiment of the present invention, in which reference numerals 1, 2, and 3 are air inlets connected to an air source 5 through a switching valve 4 in the upper part, and Sample inlet 1a, 2a, 3a
Is a first, second, and third vaporization tube having a generated gas discharge port at the lower end, in which the neutral carrier A such as quartz is provided in the first vaporization tube 1 and the second vaporization tube. 2 is lithium hydroxide (Li
Basic compound B such as OH) and neutral carrier A, and phosphoric acid (H 3 PO 4 ) or sulfuric acid (H 2 S) in the third vaporization tube 3.
It is composed by filling an acidic compound C such as O 4 ) and a neutral carrier A. Reference numeral 6 is a thermostatic chamber containing the vaporization tubes 1, 2, and 3 and is controlled to a temperature at which the volatile organic substances contained in the sample are gasified. A volatile organic carbon combustion tube 7 has one end connected to the lower ends of the first, second and third vaporization pipes 1, 2 and 3 by a heating pipe 8 and the other end connected to a carbon dioxide gas detector 10 described later by a pipe. Thus, the inside is filled with the oxidation catalyst D. Reference numeral 9 is a high-temperature furnace containing the volatile organic carbon combustion tube 7, and is controlled to a temperature at which the gas from the vaporization tubes 1, 2, 3 can be oxidized and converted into carbon dioxide gas.
Reference numeral 10 denotes the carbon dioxide gas detector described above, which is provided with the sample cell 10a into which the gas from the combustion pipe 7 flows and the comparison cell 10b connected to the pipe line extending from the air source 5 to the switching valve 4 and generated in the combustion pipe 7. It is configured to detect the difference between the concentrations of carbon dioxide gas and carbon dioxide gas in the air. In the figure, reference numerals 11 and 1
Reference numeral 2 denotes a dehumidifier and a filter provided in a pipe connecting the combustion pipe 7 and the gas detector 10, respectively, and 13 denotes the gas detector 10
2 shows a signal processing device for processing a signal from
このような準備を終えた段階で、試料を第１の気化管１
に注入すると、試料に含まれている全ての揮発性の有機
炭素は、ガス化されて加熱配管８を通って燃焼管７に流
入して炭酸ガスに変換されて炭酸ガス検出器１０により
濃度が検出される。When such preparations are completed, the sample is put into the first vaporization tube 1
When injected into, the volatile organic carbon contained in the sample is gasified, flows into the combustion pipe 7 through the heating pipe 8, is converted into carbon dioxide gas, and is converted into carbon dioxide gas by the carbon dioxide gas detector 10. To be detected.
この全揮発性有機炭素量の測定が終了した時点で、切換
弁４を第２の気化管２に切換えて空気を導入し、同時に
試料を注入する。気化管２においてガス化した全揮発性
有機炭素の内、酸性有機物は、気化管２内のアルカリ性
化合物Ｂと化合して取込まれる一方、中性及びアルカリ
性の揮発性有機炭素は燃焼管７に流入して炭酸ガスに変
換されて炭酸ガス検出器１０により濃度が検出される。When the measurement of the total volatile organic carbon amount is completed, the switching valve 4 is switched to the second vaporization pipe 2 to introduce air, and at the same time, the sample is injected. Of the total volatile organic carbon gasified in the vaporizing tube 2, the acidic organic matter is taken in by combining with the alkaline compound B in the vaporizing tube 2, while the neutral and alkaline volatile organic carbon is taken into the combustion tube 7. It flows in and is converted into carbon dioxide gas, and the concentration is detected by the carbon dioxide gas detector 10.
この中性、及びアルカリ性の揮発性有機炭素の濃度測定
が終了した時点で、切換弁４を第３の気化管３に切換え
て空気を導入し、同時に試料を注入する。気化管３にお
いてガス化した揮発性有機炭素の内、アルカリ性有機化
合物は、気化管３内の酸性化合物Ｃと化合して取込まれ
る一方、中性及びアルカリ性の揮発性有機炭素は、燃焼
管７に流入して炭酸ガスに変換されて炭酸ガス検出器１
０により濃度が検出される。When the measurement of the concentrations of the neutral and alkaline volatile organic carbons is completed, the switching valve 4 is switched to the third vaporizing pipe 3 to introduce air, and at the same time, the sample is injected. Of the volatile organic carbon gasified in the vaporization pipe 3, the alkaline organic compound is taken in by combining with the acidic compound C in the vaporization pipe 3, while the neutral and alkaline volatile organic carbon is taken in by the combustion pipe 7. Carbon dioxide detector 1
A density of 0 is detected.
このようにして、全揮発性炭素、中性・アルカリ性揮発
性炭素、及び中性・酸性揮発性炭素のそれぞれの濃度が
求まった時点で、全揮発性炭素濃度と中性・アルカリ性
揮発性炭素濃度の差分、及び全揮発性炭素濃度と中性・
酸性揮発性炭素濃度の差分を求めることにより、全揮発
性有機炭素に占める中性、アルカリ性、及び酸性の炭素
化合物の割合を知ることができる。In this way, when the respective concentrations of total volatile carbon, neutral / alkaline volatile carbon, and neutral / acidic volatile carbon are obtained, the total volatile carbon concentration and the neutral / alkaline volatile carbon concentration Difference, and total volatile carbon concentration and neutral
By obtaining the difference in the concentration of acidic volatile carbon, it is possible to know the proportions of neutral, alkaline, and acidic carbon compounds in the total volatile organic carbon.
［実施例］ ０．１規定の塩酸を１滴添加した蒸留水を高純度空気で
バブリングして無機体炭素を除去した後、中性揮発性有
機物としてアセトンを、また酸性揮発性有機化合物とし
てプロピオン酸をそれぞれ炭素相当量で１００ＰＰＭ添
加して試料を調整した。[Example] After bubbling distilled water added with one drop of 0.1 N hydrochloric acid with high-purity air to remove inorganic carbon, acetone was used as a neutral volatile organic compound and propion was used as an acidic volatile organic compound. A sample was prepared by adding 100 PPM of each acid in an amount corresponding to carbon.
石英坦体のみを充填した気化管１、及び水酸化リチウム
と石英坦体を充填した気化管２に上記試料を注入して測
定したところ、第２図に示したように出力値の比が２対
１となった。このことから、酸化化合物のプロピオン酸
は水酸化リチウムを充填した気化管が完全に除去され、
揮発性有機物を中性、酸性、及びアルカリ性の３種類に
弁別して分析できることが解った。When the above sample was injected into the vaporization tube 1 filled with only the quartz carrier and the vaporization tube 2 filled with lithium hydroxide and the quartz carrier for measurement, the ratio of the output values was 2 as shown in FIG. It became 1 against. From this, the vaporizing tube filled with lithium hydroxide was completely removed from the propionic acid as an oxide compound,
It was found that volatile organic substances can be analyzed by discriminating them into three types: neutral, acidic, and alkaline.
なお、この実施例においては、揮発性有機物の内、中性
のものは演算により求めたが、石英坦体、アルカリ化合
物、及び酸性化合物を合せて充填した第４の気化管を追
加することにより、演算を伴なうことなく揮発性有機物
を中性、酸性、及びアルカリ性の３種類に弁別して分析
することができる。In this example, among the volatile organic substances, neutral ones were obtained by calculation, but by adding a fourth vaporization tube filled with a quartz carrier, an alkali compound, and an acidic compound in combination, The volatile organic matter can be discriminated into three types of neutral, acidic, and alkaline without any calculation, and analyzed.
ト．効果 以上、説明したように本発明においては、上部に試料注
入口が、下部に生成ガス排出口が形成されて中性化合物
が充填された第１の気化管と、上部に試料注入口が、下
部に生成ガス排出口が形成されて酸性化合物が充填され
た第２の気化管と、上部に試料注入口が、下部に生成ガ
ス排出口が形成されて塩基性化合物が充填された第３の
気化管を、各気化管の試料注入口を切換弁を介して助燃
焼ガス源に接続するとともに、各気化管の排出口を、水
溶液に含まれる揮発性有機化合物を炭酸ガスに変換する
に十分な温度に加熱される燃焼管を介して炭酸ガス検出
手段に接続したので、水溶液中の中性、塩基性、及び酸
性の３種類物質をそれぞれ中性化合物、酸化性化合物、
及びアルカリ性化合物を個々に充填した気化管により炭
酸ガスに変換して個別に分析することができる。G. Effect As described above, in the present invention, the sample injection port is formed in the upper part, the first vaporization tube in which the generated gas discharge port is formed in the lower part and is filled with the neutral compound, and the sample injection port is formed in the upper part. A second vaporization tube having a generated gas outlet formed in the lower portion and filled with an acidic compound, a sample injection port in the upper portion, and a third vaporized tube having a generated gas outlet formed in the lower portion and filled with a basic compound. The vaporization tubes are connected to the auxiliary combustion gas source through the sample inlet of each vaporization tube via the switching valve, and the outlet of each vaporization tube is sufficient to convert the volatile organic compounds contained in the aqueous solution into carbon dioxide gas. Since it was connected to the carbon dioxide detecting means via a combustion pipe heated to various temperatures, neutral, basic, and acidic substances in the aqueous solution were respectively added to neutral compounds, oxidizing compounds, and
And the alkaline compound can be converted into carbon dioxide gas by a vaporization tube individually filled and analyzed individually.
第１図は、本発明の一実施例を示す装置の構成図、第２
図は、本発明による分析結果の一例を示す説明図であ
る。 １、２、３……気化管、Ａ……中性坦体 Ｂ……塩基性化合物、Ｃ……酸性化合物 ６……恒温槽 ７……揮発性有機炭素燃焼管 ９……高温炉 １０……炭酸ガス検出器FIG. 1 is a block diagram of an apparatus showing an embodiment of the present invention, and FIG.
The figure is an explanatory view showing an example of an analysis result according to the present invention. 1, 2, 3 ... Vaporization tube, A ... Neutral carrier B ... Basic compound, C ... Acid compound 6 ... Constant temperature bath 7 ... Volatile organic carbon combustion tube 9 ... High temperature furnace 10 ... … Carbon dioxide detector
Claims (1)
口が形成されて中性化合物が充填された第１の気化管
と、上部に試料注入口が、下部に生成ガス排出口が形成
されて酸性化合物が充填された第２の気化管と、上部に
試料注入口が、下部に生成ガス排出口が形成されて塩基
性化合物が充填された第３の気化管を、各気化管の試料
注入口を切換弁を介して助燃焼ガス源に接続するととも
に、各気化管の排出口を、試料に含まれる揮発性有機化
合物を炭酸ガスに変換するに十分な温度に加熱される燃
焼管を介して炭酸ガス検出手段に接続してなる全揮発性
有機化合物分析装置。1. A first vaporization tube having a sample injection port formed in an upper part and a generated gas discharge port formed in a lower part and filled with a neutral compound, a sample injection port in an upper part, and a generated gas discharge port in a lower part. Each of the vaporization tubes includes a second vaporization tube formed and filled with an acidic compound, and a third vaporization tube having an upper portion provided with a sample injection port and a lower portion provided with a generated gas exhaust port and filled with a basic compound. Combustion is heated to a temperature sufficient to convert the volatile organic compounds contained in the sample to carbon dioxide, while connecting the sample inlet of A total volatile organic compound analyzer connected to a carbon dioxide detecting means through a pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22639884A JPH0614038B2 (en) | 1984-10-26 | 1984-10-26 | Total Volatile Organic Compound Analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22639884A JPH0614038B2 (en) | 1984-10-26 | 1984-10-26 | Total Volatile Organic Compound Analyzer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61104256A JPS61104256A (en) | 1986-05-22 |
| JPH0614038B2 true JPH0614038B2 (en) | 1994-02-23 |
Family
ID=16844496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22639884A Expired - Fee Related JPH0614038B2 (en) | 1984-10-26 | 1984-10-26 | Total Volatile Organic Compound Analyzer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0614038B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2022071111A1 (en) * | 2020-09-30 | 2022-04-07 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2539449B2 (en) * | 1987-08-26 | 1996-10-02 | 株式会社日立製作所 | Ultrapure water comprehensive water quality evaluation method |
| JP4967141B2 (en) * | 2006-09-12 | 2012-07-04 | 独立行政法人海洋研究開発機構 | Pretreatment equipment for elemental analysis |
| CN110196203B (en) * | 2019-05-13 | 2022-07-08 | 深圳市家具行业协会 | Method for rapidly measuring moisture content and total volatile organic matter content of adhesive or coating |
| WO2023190049A1 (en) * | 2022-03-31 | 2023-10-05 | ホリバ トカデロ ゲーエムベーハー | Total organic carbon meter, combustion reaction unit, and total organic carbon measurement method |
-
1984
- 1984-10-26 JP JP22639884A patent/JPH0614038B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2022071111A1 (en) * | 2020-09-30 | 2022-04-07 | ||
| WO2022071111A1 (en) * | 2020-09-30 | 2022-04-07 | ホリバ トカデロ ゲーエムベーハー | Total organic carbon meter, and combustion reaction unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61104256A (en) | 1986-05-22 |
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| LAPS | Cancellation because of no payment of annual fees |