JPH0271149A - Detecting method and detector of very small amount of moisture in ambient gas - Google Patents
Detecting method and detector of very small amount of moisture in ambient gasInfo
- Publication number
- JPH0271149A JPH0271149A JP18367288A JP18367288A JPH0271149A JP H0271149 A JPH0271149 A JP H0271149A JP 18367288 A JP18367288 A JP 18367288A JP 18367288 A JP18367288 A JP 18367288A JP H0271149 A JPH0271149 A JP H0271149A
- Authority
- JP
- Japan
- Prior art keywords
- moisture
- black
- gas
- cylindrical body
- barium
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 20
- 229910052788 barium Inorganic materials 0.000 claims abstract description 44
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000000843 powder Substances 0.000 claims abstract description 44
- 238000007789 sealing Methods 0.000 claims abstract description 4
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- 229910001863 barium hydroxide Inorganic materials 0.000 abstract description 3
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 abstract 1
- 230000009545 invasion Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 40
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 150000002739 metals Chemical class 0.000 description 9
- 239000000565 sealant Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 150000004679 hydroxides Chemical class 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000011491 glass wool Substances 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000873 masking effect Effects 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 239000004945 silicone rubber Substances 0.000 description 3
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical class [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- QRJOYPHTNNOAOJ-UHFFFAOYSA-N copper gold Chemical compound [Cu].[Au] QRJOYPHTNNOAOJ-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- -1 hydroxide compounds Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004454 trace mineral analysis Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、雰囲気ガス中の微量水分検出方法及び検出器
に係わり、特に水酸化化合物を生成する活性金属の高純
度微粉末（Ｉｒａ、Ｉ［［ａ、ＩＶ ａ、ＩＶ ｂ族金
属）を製造するにあたり、雰囲気ガス中の残存微量水分
を除去する工程において、残存微量水分の有無を検出す
る雰囲気ガス中の微量水分検出方法及び検出器に関する
ものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method and a detector for detecting trace amounts of moisture in an atmospheric gas, and particularly relates to a method and a detector for detecting trace amounts of moisture in an atmospheric gas, and particularly relates to a method and a detector for detecting trace amounts of moisture in an atmospheric gas. [Related to a method and a detector for detecting trace moisture in atmospheric gas for detecting the presence or absence of residual trace moisture in the process of removing residual trace moisture in atmospheric gas in the production of [[a, IV a, IV b group metals] It is something.
［従来の技術］
一般に、活性金属の酸化等を防止すべく、その金属のさ
らされる雰囲気を不活性ガス雰囲気や真空にすることは
周知の如くである。[Prior Art] Generally, it is well known that in order to prevent oxidation of active metals, the atmosphere to which the metals are exposed is set to an inert gas atmosphere or a vacuum.
近年、超電導材料等の発達による要請から活性金属の中
でも水酸化化合物を生成する活性金属Ｎｌａ、ＩＩｒａ
、ＩＶａ、ＩＶｂ族金属）の高純度微粉末の製造が注目
されている。In recent years, due to the development of superconducting materials, active metals Nla and IIra, which generate hydroxide compounds, have become active metals.
, IVa, IVb group metals) is attracting attention.
しかしながら、このような水酸化化合物を生成する活性
金属は、その金属のさらされる雰囲気を不活性ガス雰囲
気や真空にしても、その雰囲気中に微量でも水分が残存
していると上記水酸化化合物を生成し、てり、まうため
、空孔等の欠陥が発生する原因となっていた。However, even if active metals that generate such hydroxide compounds are exposed to an inert gas atmosphere or a vacuum, if even a small amount of moisture remains in the atmosphere, the hydroxide compounds will be generated. This causes defects such as pores to occur due to the formation, cracking, and warping.
そこで、本出願人は他の出願において、［雰囲気ガス中
の残存水分除去方法」を提案し５た。Therefore, in another application, the present applicant proposed a "method for removing residual moisture in atmospheric gas"5.
［発明が解決し、ようとする課題］
し、かし１、雰囲気ガス中の残存水分除去方法が確立さ
れてもガス中の極低濃度（１０〜１００Ｗ、／Ｖｐｐｂ
）で存在する水分を簡易的かつ定性的に検出する従来技
術はなかった。[Problems to be solved and attempted by the invention] However, even if a method for removing residual moisture in atmospheric gas has been established, extremely low concentrations (10 to 100 W, /Vppb
) There was no prior art technology that could simply and qualitatively detect the moisture present.
一般的な従来技術として適量のガスをサンプリングして
分析を行う吸着微量法（通常塩化カルシウム使用）があ
るが、この方法にあっては微量分析法であるため検出感
度が不足し１、極低濃度の水分の判定は不可能であった
。As a general conventional technique, there is an adsorption trace method (usually using calcium chloride) in which an appropriate amount of gas is sampled and analyzed, but since this method is a trace analysis method, the detection sensitivity is insufficient1, and the detection sensitivity is extremely low. It was not possible to determine the concentration of water.
また、上記水酸化化合物を生成する活性金属の製造は始
終小型の密閉容器内で行うが、吸着微量法にあっては密
閉容器内にて分析することが不可能であった。Furthermore, although the production of active metals that produce the above-mentioned hydroxide compounds is carried out in a small closed container, it has been impossible to conduct analysis in a closed container in the adsorption trace method.
上述の如き課題に鑑みて本発明は、極めて簡単に雰囲気
ガス中の残存微量水分を検出することができる雰囲気ガ
ス中の微量水分検出方法及び検出器を提供することを目
的とするものである。In view of the above-mentioned problems, it is an object of the present invention to provide a method and a detector for detecting trace amounts of moisture in atmospheric gas, which can extremely easily detect trace amounts of moisture remaining in atmospheric gas.
［課題を解決するための手段］
上記目的を達成すべく本発明の雰囲気ガス中の微量水分
検出方法は、雰囲気ガス中の微量水分を検出するに際し
７、その雰囲気ガスを黒色バリウム粉と接触させ、この
黒色バリウム粉の色の変化により雰囲気ガス中の微量水
分の有無を検出するようにし、たちのである９
また、本発明の雰囲気ガス中の微量水分検出器は、内容
物が透視できる筒体と、この筒体内に収容された黒色バ
リウム粉と、この黒色バリウム粉を上記筒体内に維持す
べくこれを挾持し７、かつ測定すべき雰囲気ガスを導入
するための通気性部材と、上記筒体内への気体の侵入を
防止すべくその両開口端部に着脱自在に設けられた蓋体
と、この蓋体と上記筒体との間隙をシールするためのシ
ール剤とからなるものである。[Means for Solving the Problems] In order to achieve the above object, the method for detecting a trace amount of moisture in an atmospheric gas of the present invention includes, when detecting a trace amount of moisture in an atmospheric gas, 7, bringing the atmospheric gas into contact with black barium powder. The presence or absence of a trace amount of moisture in the atmospheric gas is detected by the change in color of this black barium powder. a black barium powder housed in the cylinder; a gas permeable member for holding the black barium powder in order to maintain it in the cylinder; and a gas permeable member for introducing the atmospheric gas to be measured; It consists of a lid that is removably attached to both open ends to prevent gas from entering the body, and a sealant that seals the gap between the lid and the cylindrical body.
［作用］
上記雰囲気ガス中の微量水分検出方法は、雰囲気ガスが
黒色バリウム粉と接触し、ガス中に微量でも水分台まれ
ていると、その水分と黒色バリウム粉とが
２Ｈ２０＋Ｂａ−＋Ｂａ （ＯＨ）２ ＋Ｈ２の如く反
応し、て水酸化バリウムが生成され、バリウム粉の色が
黒色から白色に変化し、てインデイケータとし、て働き
、雰囲気ガス中の水分が検出されるものである。[Function] In the method for detecting trace amounts of moisture in atmospheric gas, when atmospheric gas comes into contact with black barium powder and even a trace amount of moisture is present in the gas, the moisture and black barium powder will form 2H20+Ba-+Ba (OH). 2+H2, barium hydroxide is produced, and the color of the barium powder changes from black to white, which acts as an indicator to detect moisture in the atmospheric gas.
そして、ガス中に水分が含まれていないと、上記反応は
起こらずバリウム粉の色は黒色から変化しない。If the gas does not contain moisture, the above reaction will not occur and the color of the barium powder will not change from black.
また雰囲気ガス中の微量水分検出器は、使用し。Also, a trace moisture detector in the atmospheric gas is used.
ないときには、上記筒体の両開口端部に蓋体を設け、こ
の蓋体と上記筒体との間隙をシール剤によりシールして
おく９従って、検出器はこれら蓋体とシール剤とにより
上記筒体内への気体の侵入が防止され、内部に収容され
た黒色バリウム粉を水分と反応させることなく大気中に
保存されるものである。When not in use, lids are provided at both open ends of the cylinder, and the gap between the lid and the cylinder is sealed with a sealant. This prevents gas from entering the cylinder and allows the black barium powder contained inside to be stored in the atmosphere without reacting with moisture.
そして、使用するときには、上記シール剤と蓋体とを収
り除く、すると、雰囲気ガスは筒体内に侵入し、上記通
気性部材を通過して内部に収容された黒色バリウム粉と
接触する。ガス中に微量でも水分が含まれていると、上
記反応により水酸化バリウムが生成され、バリウム粉の
色が黒色から白色に変化してインデイケータとして働き
、雰囲気ガス中の水分が検出される。When the cylinder is used, the sealant and the lid are removed, and the atmospheric gas enters the cylinder, passes through the air permeable member, and comes into contact with the black barium powder contained therein. If the gas contains even a small amount of moisture, barium hydroxide is produced by the above reaction, and the color of the barium powder changes from black to white, which acts as an indicator to detect moisture in the atmospheric gas.
またカス中に水分が含まれていないと、上記反応は起こ
らずバリウム粉の色は黒色から変化し、ない。Furthermore, if the waste does not contain water, the above reaction will not occur and the color of the barium powder will change from black.
［実施例］
以下に本発明の好適一実施例を添付図面に基すいて詳述
する９
本発明の雰囲気ガス中の微量水分検出方法は、第１図に
示す雰囲気ガス中の微量水分検出器を使用し、てなされ
る。図示するように、微量水分検出器１の本体は、内容
物が透視できる筒体２からなっている、この筒体２は、
例えば透明ガラス製の円筒管にて形成されている。この
筒体２の大きさは、例えば内径ＩＤが１５ｍｍｅに、長
さしが５０間１に形成されている。この筒体２内には、
黒色バリウム粉（金属バリウム粉）３が収容されている
。この黒色バリウム粉３には、１０〜２０縛の粒度のも
のを使用する。無色の金属は微粉化することにより、可
視光線の全反射効率が著しく低下し黒色に見える。この
黒色バリウム粉３は、上記筒体２内で通気性部材４によ
って挾持されている。[Example] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. It is made using . As shown in the figure, the main body of the trace moisture detector 1 consists of a cylinder 2 through which the contents can be seen.
For example, it is formed of a cylindrical tube made of transparent glass. The size of this cylinder 2 is, for example, an inner diameter ID of 15 mm and a length of 50 mm. Inside this cylinder 2,
Black barium powder (metallic barium powder) 3 is stored. The black barium powder 3 used has a particle size of 10 to 20 grains. When colorless metals are pulverized, the efficiency of total reflection of visible light is significantly reduced, making them appear black. This black barium powder 3 is held between the air-permeable members 4 within the cylindrical body 2 .
二の通気性部材４は、上記黒色バリウム粉３を筒体２内
に維持すると共に、測定すべき雰囲気ガスを筒体２内に
導入すべく設けられている０本実施例にあっては、通気
性部材４はグラスウール４ａと、このグラスウール４ａ
を支持するための銅製の金１４ｂによって形成されてい
る９この銅製の金網４ｂは、グラスウール４ａを筒体２
の軸方向外方から支持し、ている。グラスウール４ａだ
けであると上記黒色バリウム粉３を筒体２内に維持する
支持力が乏しく、ｊＦＩ製の金網４ｂだけであると黒色
バリウム粉３が筒体２内から流出してし、よう。In this embodiment, the second breathable member 4 is provided to maintain the black barium powder 3 within the cylinder 2 and introduce the atmospheric gas to be measured into the cylinder 2. The breathable member 4 includes glass wool 4a and glass wool 4a.
This copper wire mesh 4b is made of copper gold 14b for supporting the glass wool 4a and the cylindrical body 2.
It is supported from the outside in the axial direction. If only the glass wool 4a is used, the supporting force to maintain the black barium powder 3 in the cylinder 2 is insufficient, and if only the jFI wire mesh 4b is used, the black barium powder 3 will flow out from the cylinder 2.
上記筒体２の両開口端部には内部への気体の侵入を防止
すべく蓋体５が着脱自在に設けられている。A lid 5 is removably provided at both open end portions of the cylinder 2 to prevent gas from entering inside.
二のＭ体５は、シリコンゴム栓により形成されており、
本検出器１を使用し、ないときに取り付けられる９更に
、この蓋体５と上記筒体２との間隙はシール剤６によっ
てシールされている。本実施例にあっては、シール剤６
には例えばゾル状マスキング剤が用いられ、上記蓋体５
を取り付けた状態の筒体２全体に被覆されている。The second M body 5 is formed of a silicone rubber plug,
Further, the gap between the lid 5 and the cylinder 2 is sealed with a sealant 6, which is attached when the detector 1 is not in use. In this example, the sealant 6
For example, a sol masking agent is used to cover the lid 5.
The entire cylindrical body 2 is covered with the cylindrical body 2.
上記微量水分検出器１を使用し、て雰囲気ガス中の微量
水分検出方法は、次のようになされる８まず、検出器１
を密閉容器（図示せず）内に入れ、内部を真空にし不活
性ガスを封入後、水分除去を行う、その雰囲気ガス中で
検出器１全体に被覆した上記シール剤６とし、てのゾル
状マスキング剤を剥がし７、さらに蓋体５とし、てのシ
リコンゴム栓を取り除く、すると、第２図に示す如く雰
囲気ガスは筒体２内に侵入し、上記通気性部材４である
グラスウール４ａ及び銅製の金網４ｂを順に通過し、て
筒体２の内部に収容された黒色バリウム粉３と接触する
ことになる。雰囲気ガス中に微量でも水分量まれている
と、その水分（Ｈ２０）と黒色バリウム粉（Ｂａ）３が
２Ｈ２０＋Ｂａ−Ｂａ （ＯＨ）？ ＋Ｈ２の如く加水
分解反応をし、て／に酸化バリウム（Ｂａ（ＯＨ）２）
が生成され、バリウム粉３の色が黒色から白色に変化し
、てインデイケータとし、て働＜。The method for detecting trace moisture in atmospheric gas using the trace moisture detector 1 described above is as follows8.
is placed in an airtight container (not shown), the interior is evacuated, and an inert gas is filled in, followed by moisture removal. The masking agent is peeled off 7, the lid body 5 is removed, and the silicone rubber stopper is removed. Then, as shown in FIG. The powder passes through the wire mesh 4b in order and comes into contact with the black barium powder 3 housed inside the cylinder 2. If even a small amount of water is present in the atmospheric gas, the water (H20) and black barium powder (Ba)3 will form 2H20+Ba-Ba (OH)? +H2 undergoes a hydrolysis reaction, and then/to barium oxide (Ba(OH)2)
is generated, and the color of barium powder 3 changes from black to white, which acts as an indicator.
二の黒色バリウム粉３の色の変化により雰囲気ガス中の
水分が検出されるものである。Moisture in the atmospheric gas is detected by the change in color of the second black barium powder 3.
そし、て、ガス中に水分が含まれていないと、上記反応
は起こらずバリウム粉３の色は黒色から変化しない９
このように本発明の雰囲気ガス中の微量水分検出方法は
、黒色バリウム粉３の色の変化だけを見る定性的なもの
であるので、色の変化の度合及び速度により水分量の予
測を行うものである１判定法としては、「黒色不変：水
分なし１、灰色安定：水分がｆｆ＝ｌｉｔ量存在する、
白色変化：水分が存在する」が判断基準として考えられ
る。従って、雰囲気ガス中の水分が極微量であることを
望む場合には、黒色バリウム粉３の色の変化が無くなる
まで数回の測定を行うものである。If the gas does not contain moisture, the above reaction will not occur and the color of the barium powder 3 will not change from black.9 As described above, the method for detecting a trace amount of moisture in an atmospheric gas according to the present invention uses black barium powder. Since it is a qualitative method that only looks at the color change of 3, the moisture content is predicted based on the degree and speed of color change.1 Judgment method is ``black unchanged: no moisture 1, gray stable: There is an amount of water ff=lit,
"White color change: presence of moisture" can be considered as a judgment criterion. Therefore, if it is desired that the amount of moisture in the atmospheric gas be extremely small, measurements should be carried out several times until there is no change in the color of the black barium powder 3.
バリウム粉３を用いたのは、アルカリ金属類（Ｉａ族）
及びアルカリ土類金属（ＩＩａ族）は鋭敏に水と化合し
、て水酸化化合物を生成し、白色化するからであり、そ
の中でもバリウムが目視上の色変鮮明度が最も優れてい
るからである。Barium powder 3 was used for alkali metals (group Ia)
This is because barium and alkaline earth metals (group IIa) combine with water to form hydroxide compounds, resulting in whitening, and among these, barium has the best visual color change clarity. be.
また、上記雰囲気ガス中の微量水分検出器１は、使用し
ないときには、上記筒体２の両開口端部に蓋体５である
シリコンゴム栓を挿入して収り付け、この蓋体５と上記
筒体２との間隙をさらにシールすべく上記シール剤６と
してのゾル状マスキング剤を検出器１全体に被覆し、て
おく。これら蓋ｆ４：５とシール剤６とにより上記筒体
２内への気体の侵入が防止される。従って、筒体２内に
収容された黒色バリウム粉３は水分と反応することなく
大気中で保存または運搬されるものである。Further, when the trace moisture detector 1 in atmospheric gas is not in use, it is stored by inserting silicone rubber plugs as the lid 5 into both open ends of the cylindrical body 2. In order to further seal the gap with the cylinder 2, the entire detector 1 is coated with a sol masking agent as the sealant 6. The lid f4:5 and the sealant 6 prevent gas from entering the cylindrical body 2. Therefore, the black barium powder 3 contained in the cylinder 2 can be stored or transported in the atmosphere without reacting with moisture.
更に、本発明の検出器１は、上述した如く極めて小型に
形成することができるため、容積を制限された密閉容器
内においても使用することができる。Furthermore, since the detector 1 of the present invention can be made extremely compact as described above, it can be used even in a closed container with limited volume.
尚、当該検出器１は極低濃度の水分域で製作し１、予め
複数個製作しておくものである。It should be noted that the detector 1 is manufactured in an extremely low concentration water region 1, and a plurality of detectors are manufactured in advance.
さらに本発明で使用する黒色バリウム粉３は、別途出願
の［水酸化化合物を生成する活性金属の高純度微粉末の
製造方法」によって製造することができ自給が可能であ
る９
［発明の効果］
以上要するに本発明の請求項１及び２によれば、黒色バ
リウム粉の色が変化してインデイケタとし、て働き、極
めて簡単に雰囲気ガス中の残存ｖ１．量水分を検出する
ことができる。Furthermore, the black barium powder 3 used in the present invention can be produced by the separately filed "Method for producing high-purity fine powder of active metal that produces hydroxide compounds" and can be self-sufficient.9 [Effects of the invention] In summary, according to claims 1 and 2 of the present invention, the color of the black barium powder changes to act as an indicator, and the residual v1. The amount of moisture can be detected.
また本発明の請求項２によれば、インデイケータとして
使用する黒色バリウム粉のみが消耗品であるため、他の
構成部品は多数回繰り返し。Further, according to claim 2 of the present invention, only the black barium powder used as the indicator is a consumable item, so the other components are repeated many times.
て使用することかできる。Can be used as
更に、蓋体及び当該蓋体と上記筒体との間隙をシールす
るためのシール剤とを備えたので、大気中で長期間保存
または運搬することができる。Furthermore, since it includes a lid and a sealant for sealing the gap between the lid and the cylindrical body, it can be stored or transported in the atmosphere for a long period of time.
第１図は本発明の雰囲気ガス中の微量水分検出器の一実
施例を示す側断面図、第２図は第１図に示した検出器の
使用状態を示す側断面図である。
図中、１は雰囲気ガス中の微量水分検出器、２は筒体、
３は黒色バリウム粉、４は通気性部材、５は蓋体、６は
シール剤である。FIG. 1 is a side sectional view showing an embodiment of the trace moisture detector in atmospheric gas according to the present invention, and FIG. 2 is a side sectional view showing the state in which the detector shown in FIG. 1 is used. In the figure, 1 is a trace moisture detector in atmospheric gas, 2 is a cylindrical body,
3 is black barium powder, 4 is a breathable member, 5 is a lid, and 6 is a sealant.
Claims (1)
囲気ガスを黒色バリウム粉と接触させ、該黒色バリウム
粉の色の変化により雰囲気ガス中の微量水分の有無を検
出するようにしたことを特徴とする雰囲気ガス中の微量
水分検出方法。 ２、内容物が透視できる筒体と、該筒体内に収容された
黒色バリウム粉と、該黒色バリウム粉を上記筒体内に維
持すべくこれを挾持し、かつ測定すべき雰囲気ガスを導
入するための通気性部材と、上記筒体内への気体の侵入
を防止すべくその両開口端部に着脱自在に設けられた蓋
体と、該蓋体と上記筒体との間隙をシールするためのシ
ール剤とからなることを特徴とする雰囲気ガス中の微量
水分検出器。[Claims] 1. When detecting a trace amount of moisture in an atmospheric gas, the atmospheric gas is brought into contact with black barium powder, and the presence or absence of a trace amount of moisture in the atmospheric gas is detected based on a change in the color of the black barium powder. A method for detecting trace amounts of moisture in an atmospheric gas, characterized in that: 2. A cylindrical body through which the contents can be seen, black barium powder contained within the cylindrical body, and for holding the black barium powder in order to maintain it within the cylindrical body and introducing an atmospheric gas to be measured. a breathable member, a lid removably provided at both open ends of the cylinder to prevent gas from entering the cylinder, and a seal for sealing a gap between the lid and the cylinder. A trace moisture detector in an atmospheric gas, characterized by comprising:
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18367288A JPH0271149A (en) | 1988-07-25 | 1988-07-25 | Detecting method and detector of very small amount of moisture in ambient gas |
| EP89113587A EP0356698B1 (en) | 1988-07-25 | 1989-07-24 | Method and apparatus for cleaning atmosphere gas used in making high-purity fine particles of reactive metals |
| EP93106256A EP0564000B1 (en) | 1988-07-25 | 1989-07-24 | Method and apparatus for detecting moisture present in atmosphere gas |
| DE1989614213 DE68914213T2 (en) | 1988-07-25 | 1989-07-24 | Method and apparatus for purifying atmospheric gas used for the production of high-purity fine particles of reactive metals. |
| DE1989627741 DE68927741T2 (en) | 1988-07-25 | 1989-07-24 | Method and apparatus for the detection of moisture in the gas atmosphere |
| US07/737,121 US5180554A (en) | 1988-07-25 | 1991-07-29 | Method of detecting the presence of moisture in a gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18367288A JPH0271149A (en) | 1988-07-25 | 1988-07-25 | Detecting method and detector of very small amount of moisture in ambient gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0271149A true JPH0271149A (en) | 1990-03-09 |
Family
ID=16139908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18367288A Pending JPH0271149A (en) | 1988-07-25 | 1988-07-25 | Detecting method and detector of very small amount of moisture in ambient gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0271149A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008241546A (en) * | 2007-03-28 | 2008-10-09 | Hitachi High-Technologies Corp | Method and apparatus for confirming removal of moisture in solid-phase extraction column and solid-phase extraction column |
| CN113412338A (en) * | 2018-11-26 | 2021-09-17 | Pgm 回收系统公司 | Low-temperature cooling recovery method for metal substrate binding material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5940852B2 (en) * | 1975-03-11 | 1984-10-03 | ヘキスト・アクチエンゲゼルシヤフト | Improved C. I. Acid Red 42 manufacturing method |
-
1988
- 1988-07-25 JP JP18367288A patent/JPH0271149A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5940852B2 (en) * | 1975-03-11 | 1984-10-03 | ヘキスト・アクチエンゲゼルシヤフト | Improved C. I. Acid Red 42 manufacturing method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008241546A (en) * | 2007-03-28 | 2008-10-09 | Hitachi High-Technologies Corp | Method and apparatus for confirming removal of moisture in solid-phase extraction column and solid-phase extraction column |
| CN113412338A (en) * | 2018-11-26 | 2021-09-17 | Pgm 回收系统公司 | Low-temperature cooling recovery method for metal substrate binding material |
| CN113412338B (en) * | 2018-11-26 | 2022-11-29 | Pgm 回收系统公司 | Low-temperature cooling recovery method for metal substrate binding material |
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