WO2006035609A1 - 微量成分の分析方法およびその分析装置 - Google Patents
微量成分の分析方法およびその分析装置 Download PDFInfo
- Publication number
- WO2006035609A1 WO2006035609A1 PCT/JP2005/016979 JP2005016979W WO2006035609A1 WO 2006035609 A1 WO2006035609 A1 WO 2006035609A1 JP 2005016979 W JP2005016979 W JP 2005016979W WO 2006035609 A1 WO2006035609 A1 WO 2006035609A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- hydrogen
- fluorine
- fluoride
- mixed gas
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N30/14—Preparation by elimination of some components
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N2030/022—Column chromatography characterised by the kind of separation mechanism
- G01N2030/025—Gas chromatography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
- G01N2030/8809—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample
- G01N2030/8859—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample inorganic compounds
Definitions
- the present invention relates to a method for analyzing a trace component contained in a mixed gas containing fluorine gas. More specifically, the present invention comprises a fluorine gas and a diluent gas. The present invention relates to a method for easily and accurately analyzing carbon oxide, carbon dioxide, and other trace components, and an analyzer for the same.
- the usable filler is limited to a filler that does not react with fluorine, and in such a filler, fluorine gas and Since there is no suitable filler for separating other components such as oxygen, there is a problem that the components that cannot be separated cannot be analyzed.
- the method (2) in the case of fluorine gas diluted with a rare gas or the like, there is a problem that fluorine is not completely fixed by the metal fluoride and fluorine gas remains.
- Patent Document 1 Japanese Patent Laid-Open No. 7-287001
- the present invention seeks to solve the problems associated with the prior art as described above, eliminates the disadvantages of the conventional methods, and contains a mixture containing fluorine that can be used as a special material gas for semiconductors. It is an object of the present invention to provide a method for simply and accurately analyzing a trace component contained in a gas and to provide an analyzer for the method.
- the present invention relates to a method for analyzing a trace component contained in a mixed gas containing fluorine shown in the following [1] to [6] and an analyzer therefor.
- a method for analyzing a trace component comprising: converting the fluorine gas into hydrogen fluoride, removing the fixed hydrogen fluoride, and then analyzing the trace component.
- the hydrogen fluoride fixed layer removal uses a layer filled with an alkali metal fluoride.
- the concentration power of fluorine gas in the mixed gas is 30 vol% or less.
- a gas sampler with a sample metering tube connected to a hexagonal switching valve that can switch the carrier gas flow path, and a sample metering tube that can dispense a certain amount of sample, and Gas chromatograph
- the trace gas analyzer is arranged such that the mixed gas and the hydrogen-containing material force flow in this order.
- a fluorine gas and a diluent gas are used, and a mixed gas containing a trace component and a hydrogen-containing substance are reacted to convert the fluorine gas into hydrogen fluoride, thereby fixing and removing hydrogen fluoride.
- analysis by gas chromatograph makes it possible to analyze the trace components contained in the mixed gas containing fluorine simply, accurately and efficiently.
- FIG. 1 is a diagram showing an analysis device for trace components in a mixed gas containing fluorine gas according to the present invention.
- FIG. 2 is an enlarged view of the six-way switching valve 6 shown in FIG.
- the analysis method of the present invention consists of a fluorine gas and a diluent gas, and contains trace components.
- the fluorine gas is converted to hydrogen fluoride by reacting the mixed gas and the hydrogen-containing substance, and the hydrogen fluoride is fixed and removed, and then analyzed by gas chromatography.
- dilution gas for example, helium (He), neon (Ne), argon (Ar), thalibutone (Kr), xenon (Xe), radon (Rn) and nitrogen (N) force are also selected.
- helium (He) for example, helium (He), neon (Ne), argon (Ar), thalibutone (Kr), xenon (Xe), radon (Rn) and nitrogen (N) force are also selected.
- He helium
- Ne neon
- Ar argon
- Kr thalibutone
- Xe xenon
- Rn radon
- N nitrogen
- the concentration of fluorine gas in the mixed gas is preferably 30 vol% or less, more preferably 10 vol% or less. If it is 30 vol% or more, a large amount of heat is generated when the fluorine gas reacts with the hydrogen-containing substance, which may cause problems such as safety and corrosion.
- any substance that can react with fluorine gas and a substance by-produced by the reaction does not hinder the analysis of the trace component may be used, for example, hydrogen (H),
- hydrogen-containing compounds such as methane (CH), ethane (C H) and propane (C H).
- hydrogen (H) is preferable.
- the fluorine gas is replaced with hydrogen fluoride.
- the reaction is promoted even at room temperature, but it is preferable to set the temperature within the range of 50 to 250 ° C to complete the reaction! /.
- the mixed gas containing the trace component and the hydrogen-containing substance are mixed in advance before the reaction tube.
- the gas containing hydrogen fluoride generated by the above reaction is introduced into a tube filled with an alkali metal fluoride, and the hydrogen fluoride is fixed and removed.
- the alkali metal fluoride used here may be any compound that can remove hydrogen fluoride in a fixed manner. For example, lithium fluoride (LiF), sodium fluoride (NaF), potassium fluoride (KF ) And the like.
- the chemical change when hydrogen fluoride is introduced into a tube filled with an alkali metal fluoride, for example, when sodium fluoride (NaF) is used is expressed as follows.
- hydrogen fluoride is removed in a fixed manner by an alkali metal fluoride such as sodium fluoride.
- an alkali metal fluoride such as sodium fluoride.
- the temperature of the tube filled with the alkali metal fluoride is not particularly limited. In the tube filled with the alkali metal fluoride, only hydrogen fluoride is removed, and oxygen, nitrogen, carbon monoxide, carbon dioxide, other gases, which are trace components contained in the mixed gas, and Dilution gas passes through the tube without loss or increase.
- the mixed gas is introduced into a gas sampler equipped with a sample measuring tube.
- the gas introduced into the gas sampler and weighed to a certain amount is guided to a gas chromatograph by a carrier gas such as helium (He), for example, by switching a six-way switching valve and filled with an appropriate filler.
- He helium
- the trace component contained in the mixed gas is separated by the separation column.
- a thermal conductivity detector can be used as a detector of the gas chromatograph.
- a photoion detector that is particularly sensitive to inorganic gas can be used.
- FIG. 1 showing the apparatus used for the analysis method of the present invention.
- helium gas is circulated by the mass flow controller 8 from the pipe extending from valve 1, and a mixed gas containing fluorine gas and a pipe through which hydrogen gas circulates as a hydrogen-containing substance, for example, Helium is substituted for air components and other components that give positive errors in analysis.
- valves 1, 4 and 5 are closed, the valve 3 and the sample container valve 7 are opened, and the mixed gas containing fluorine gas is circulated at a constant flow rate by the mass flow controller 8.
- hydrogen gas is caused to flow at a constant flow rate from the pipe extending from valve 2 by the mass flow controller 9.
- the flow rate of hydrogen gas per unit time should be such that the molar ratio is equal to or greater than the flow rate of fluorine gas per unit time.
- the mixed gas and hydrogen gas containing fluorine gas are guided to the reaction tube 11 of fluorine gas and hydrogen gas heated by the heater 12 and exhausted from the valve 3 until a steady state is reached.
- the valve 3 After confirming that the fluorine gas has been completely converted to hydrogen fluoride, the valve 3 is closed, the valves 4 and 5 are opened, and the outlet gas of the reaction tube 11 is connected to the tube 13 filled with alkali metal fluoride. Then, hydrogen fluoride is removed with an alkali metal fluoride such as sodium fluoride.
- sample gas and unreacted hydrogen gas are exhausted through the sample measuring tube 14 and the flow meter 15.
- the flow path is switched to the dotted line in FIG.
- Sample gas introduced into gas chromatograph 16 and unreacted Hydrogen gas is separated by a column packed with a gas chromatograph packing material and detected by a thermal conductivity detector.
- the sample gas was prepared by filling the sample container with fluorine gas generated by the fluorine generator FG (made by Showa Denko KK), and then further filling with neon (Ne) gas so that the fluorine concentration would be 3 vol%. .
- the sample gas and the hydrogen gas are respectively supplied by a mass flow controller so that the hydrogen gas has a molar ratio twice that of the fluorine gas in the sample gas, and a reaction tube for the fluorine gas and the hydrogen-containing substance. These were mixed at the inlet, and introduced into a reaction tube heated to 150 ° C. with a heater.
- the reaction tube outlet gas was absorbed in potassium iodide (KI) aqueous solution, titrated with sodium thiosulfate aqueous solution and analyzed for unreacted fluorine gas.
- KI potassium iodide
- the fluorine gas concentration was less than Ivolppm, and the fluorine gas was almost completely removed. I reacted.
- the concentration of hydrogen fluoride was less than Ivolppm, and the hydrogen fluoride was removed.
- the outlet gas of the tube filled with sodium fluoride (NaF) was introduced into a gas sampler with a sample measuring tube.
- a certain amount of sample gas introduced into the sample metering tube is guided to the gas chromatograph by helium (He) as a carrier gas and filled in the gas chromatograph.
- He helium
- the resultant was separated with molecular sieve 5A and silica gel.
- the oxygen concentration was less than 2 volppm
- the nitrogen concentration was less than 2 volppm
- the carbon dioxide concentration was less than Ivolppm.
- the present invention relates to a method for analyzing trace components contained in a mixed gas containing fluorine gas in a simple and accurate manner and an analyzer therefor.
- Such an analysis method and analysis apparatus of the present invention are useful for analyzing trace components contained in a mixed gas containing fluorine gas used as a special material gas for semiconductors, for example.
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006537674A JP4699377B2 (ja) | 2004-09-30 | 2005-09-14 | 微量成分の分析方法およびその分析装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-287539 | 2004-09-30 | ||
| JP2004287539 | 2004-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006035609A1 true WO2006035609A1 (ja) | 2006-04-06 |
Family
ID=36118761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/016979 Ceased WO2006035609A1 (ja) | 2004-09-30 | 2005-09-14 | 微量成分の分析方法およびその分析装置 |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4699377B2 (ja) |
| KR (1) | KR100837477B1 (ja) |
| CN (1) | CN100458438C (ja) |
| TW (1) | TW200624804A (ja) |
| WO (1) | WO2006035609A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007057371A (ja) * | 2005-08-24 | 2007-03-08 | Showa Denko Kk | フッ素ガス中の含有ガス成分の定量分析方法およびこれに用いる装置 |
| JP2010203850A (ja) * | 2009-03-02 | 2010-09-16 | Toyo Tanso Kk | フッ素ガスの濃度測定方法及び濃度測定装置 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008061158B3 (de) * | 2008-12-09 | 2010-04-08 | Siemens Aktiengesellschaft | Verfahren und Anordnung zur gaschromatographischen Analyse eines Gasgemischs |
| WO2016114717A1 (en) * | 2015-01-12 | 2016-07-21 | R2Cd Holdings Pte Ltd | An enhanced measurement system of a photo-ionization detector with capabilities for automatic cleaning and automatic purging feature |
| JP7055323B2 (ja) * | 2017-07-21 | 2022-04-18 | 株式会社日立ハイテクサイエンス | 質量分析装置及び質量分析方法 |
| TWI820776B (zh) * | 2019-08-29 | 2023-11-01 | 美商希瑪有限責任公司 | 氣體放電光源中之氟偵測 |
| CN112540140B (zh) * | 2020-12-16 | 2022-12-27 | 中船(邯郸)派瑞特种气体股份有限公司 | 一种气相色谱法测定hf中痕量杂质的设备及方法 |
| CN112782340A (zh) * | 2020-12-24 | 2021-05-11 | 青海盐湖工业股份有限公司 | 一种氯气中氢气含量的测定方法 |
| CN115308321B (zh) * | 2022-07-04 | 2024-08-09 | 浙江赛鹭鑫仪器有限公司 | 一种氟气及氟化物分析系统及方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02162257A (ja) * | 1988-12-16 | 1990-06-21 | Central Glass Co Ltd | 含フッ素ガス成分濃度測定方法およびその装置 |
| JPH049757A (ja) * | 1990-04-27 | 1992-01-14 | Central Glass Co Ltd | フッ素またはフッ化塩素ガス中の微量不純物の分析方法およびその装置 |
| JP2003014716A (ja) * | 2001-06-29 | 2003-01-15 | Showa Denko Kk | 高純度フッ素ガス中の微量不純物の分析方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3339962B2 (ja) * | 1994-04-18 | 2002-10-28 | 関東電化工業株式会社 | フッ素ガス中の不純物ガスの分析方法およびその装置 |
-
2005
- 2005-09-14 JP JP2006537674A patent/JP4699377B2/ja not_active Expired - Fee Related
- 2005-09-14 KR KR1020077009560A patent/KR100837477B1/ko not_active Expired - Fee Related
- 2005-09-14 WO PCT/JP2005/016979 patent/WO2006035609A1/ja not_active Ceased
- 2005-09-14 CN CNB2005800330320A patent/CN100458438C/zh not_active Expired - Fee Related
- 2005-09-21 TW TW094132698A patent/TW200624804A/zh unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02162257A (ja) * | 1988-12-16 | 1990-06-21 | Central Glass Co Ltd | 含フッ素ガス成分濃度測定方法およびその装置 |
| JPH049757A (ja) * | 1990-04-27 | 1992-01-14 | Central Glass Co Ltd | フッ素またはフッ化塩素ガス中の微量不純物の分析方法およびその装置 |
| JP2003014716A (ja) * | 2001-06-29 | 2003-01-15 | Showa Denko Kk | 高純度フッ素ガス中の微量不純物の分析方法 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007057371A (ja) * | 2005-08-24 | 2007-03-08 | Showa Denko Kk | フッ素ガス中の含有ガス成分の定量分析方法およびこれに用いる装置 |
| JP2010203850A (ja) * | 2009-03-02 | 2010-09-16 | Toyo Tanso Kk | フッ素ガスの濃度測定方法及び濃度測定装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101031794A (zh) | 2007-09-05 |
| KR100837477B1 (ko) | 2008-06-12 |
| CN100458438C (zh) | 2009-02-04 |
| JP4699377B2 (ja) | 2011-06-08 |
| TW200624804A (en) | 2006-07-16 |
| KR20070058662A (ko) | 2007-06-08 |
| JPWO2006035609A1 (ja) | 2008-05-15 |
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