JPS59141064A - Column for chromatography - Google Patents

Column for chromatography

Info

Publication number
JPS59141064A
JPS59141064A JP58015298A JP1529883A JPS59141064A JP S59141064 A JPS59141064 A JP S59141064A JP 58015298 A JP58015298 A JP 58015298A JP 1529883 A JP1529883 A JP 1529883A JP S59141064 A JPS59141064 A JP S59141064A
Authority
JP
Japan
Prior art keywords
column
chromatography
membrane
phase liquid
stationary phase
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.)
Granted
Application number
JP58015298A
Other languages
Japanese (ja)
Other versions
JPH0555818B2 (en
Inventor
Hisashi Saito
斎藤 壽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimadzu Corp
Shimazu Seisakusho KK
Original Assignee
Shimadzu Corp
Shimazu Seisakusho KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shimadzu Corp, Shimazu Seisakusho KK filed Critical Shimadzu Corp
Priority to JP58015298A priority Critical patent/JPS59141064A/en
Publication of JPS59141064A publication Critical patent/JPS59141064A/en
Publication of JPH0555818B2 publication Critical patent/JPH0555818B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/60Construction of the column
    • G01N30/6052Construction of the column body
    • G01N30/6073Construction of the column body in open tubular form
    • G01N30/6078Capillaries
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/50Conditioning of the sorbent material or stationary liquid
    • G01N30/52Physical parameters
    • G01N2030/524Physical parameters structural properties
    • G01N2030/527Physical parameters structural properties sorbent material in form of a membrane

Abstract

PURPOSE:To obtain a column which stably holds a solid phase and has excellent separation capacity, by forming an organopolysiloxane type crosslinked high- molecular membrane to the inner surface of the column for chromatography while applying a fixing phase liquid to the surface of said membrane. CONSTITUTION:A volatile solvent solution prepared by adding a radical generating agent such as benzoyl proxide to organopolysiloxane having one or more of vinyl groups such as methylphenylvinylsilicone to the inner surface of the tube 1 for chromatography comprising soda lime glass, borosilicate glass or stainless steel and dried and heated for a time sufficient to form a crosslinked membrane 2. In the next step, a solution of non-polar or polar methylphenylsilicone is applied to said membrane 2 and a solvent is removed to form a uniform fixing phase liquid coating 3. As mentioned above, surface roughening treatment such as chemical etching of an internal surface becomes unnecessary and excellent separation capacity in which the feature of the inert surface possessed by quartz glass is usefully adapted can be provided, especially, to the capillary tube made of quartz glass.

Description

【発明の詳細な説明】 (イ)産業上の利用分野 この発明は、クロマトグラフィ用カラムに関する。 さ
らに詳しくは、ガスクロマトグラフィや液体クロマトグ
ラフィ等のクロマトグラフィに用いられる  クロマト
グラフィ用カラム、ことに固定相に液体を用いたカラム
に関する。
DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a column for chromatography. More specifically, it relates to chromatography columns used in chromatography such as gas chromatography and liquid chromatography, particularly columns using a liquid as a stationary phase.

←)従来技術 従来から、クロマトグラフィ用カラムとして内面の固定
相に液体を用いたものが知られている。
←) Prior Art Columns for chromatography that use a liquid as the inner stationary phase have been known for some time.

この固定相液体としては、種々の極性のものが知られ、
分離する目的成分との組合せにおいて種々の選択がなさ
れている。
Various polar types are known as this stationary phase liquid,
Various choices have been made in combination with target components to be separated.

しかしながら、かような固定相液体をカラム用チューブ
内面にコートするに際し、種々の問題点があった。
However, there are various problems when coating the inner surface of a column tube with such a stationary phase liquid.

例えば、ガスクロマトグラフィ用カラムことにキャピラ
リーカラムの場合、極性固定相液体が液滴となってコー
トし難く(ことに極性が中程度から強い場合にしばしば
コート困難である)、通常、コート前ニキャビラリーカ
ラム内面を化学エツチングしたり、無機難溶性塩層を形
成させて粗面化処理を行なう必要があった。 さらに、
かような前処理はキャピラリーチューブとしてソーダ石
灰ガラスチューブや硼珪酸ガラスチューブ等の内面が充
分に不活性でないチューブを用いた際には適用できるが
、石英ガラスチューブのような内面が充分に不活性であ
る好ましいチューブを用いた際には適切な処理とはいえ
ない。 すなわち、石英ガラスチューブは、ソーダ石灰
ガラスや硼珪酸ガラスのような不純物(金属酸化物やシ
ラノール基等)をほとんど含んでいないため化学的に充
分に不活性であり、分離成分に対する影響も極めて少な
く、高精度の測定に適するものであるが、上記のごとき
前処理を行なうとその内面の不活性さが損なわれてしま
い石英ガラスのメリットが生かされないという欠点があ
った。 もつとも化学エツチング自体も困難であった。
For example, in the case of gas chromatography columns and capillary columns, it is difficult to coat polar stationary phase liquids in the form of droplets (particularly when the polarity is medium to strong, coating is often difficult), and it is usually difficult to coat the polar stationary phase liquid in the form of droplets. It was necessary to roughen the inner surface of the column by chemically etching it or forming a layer of inorganic, poorly soluble salt. moreover,
Such pretreatment can be applied when a capillary tube whose inner surface is not sufficiently inert, such as a soda-lime glass tube or a borosilicate glass tube, is used as a capillary tube. It cannot be said that this is an appropriate treatment when using a preferred tube. In other words, unlike soda-lime glass and borosilicate glass, quartz glass tubes contain almost no impurities (metal oxides, silanol groups, etc.), so they are chemically inert and have very little effect on separated components. Although quartz glass is suitable for high-precision measurements, it has the disadvantage that the inertness of its inner surface is impaired when the above-mentioned pretreatment is carried out, and the advantages of quartz glass cannot be utilized. However, chemical etching itself was difficult.

すなわち、石英ガラスのキャピラリーチューブにおいて
、そのハイグレードな内面の不活性さを損なわずに極性
固定相液体を内面コートすること困難であった。 さら
に通常のクロマトグラフィ用カラムにおいては、キャピ
ラリーカラムのような前処理はとくに必要としないが、
極性固定相液体の内面への親和性の向上が固定相の安定
性の点でより望ましい課題の一つであった。
That is, it has been difficult to coat the inner surface of a quartz glass capillary tube with a polar stationary phase liquid without impairing the inertness of the high-grade inner surface. Furthermore, ordinary chromatography columns do not require special pretreatment like capillary columns, but
Improving the affinity of polar stationary phase liquids for internal surfaces has been one of the more desirable issues in terms of stationary phase stability.

(ハ)発明の目的 この発明は、以上述べた従来の問題点を解消すべくなさ
れたものである。 すなわち、この発明は、内面が充分
に不活性でかつ極性固定相液体を内面に安定にコートし
てなるキャピラリーチューブを提供することを一つの目
的とする。
(c) Purpose of the Invention The present invention has been made to solve the above-mentioned conventional problems. That is, one object of the present invention is to provide a capillary tube whose inner surface is sufficiently inert and whose inner surface is stably coated with a polar stationary phase liquid.

また、この発明は、エツチング処理等の表面多孔処理を
行なうことなく、固定相液体を安定に内面コートしたキ
ャピラリーカラムを提供することを他の一つの目的とす
る。
Another object of the present invention is to provide a capillary column whose inner surface is stably coated with a stationary phase liquid without performing surface porosity treatment such as etching treatment.

さらにこの発明は、固定相液体をより安定に内面コート
したクロマトグラフィ用カラムを提供することを他の一
つの目的とする。
Another object of the present invention is to provide a chromatography column whose inner surface is more stably coated with a stationary phase liquid.

に)発明の構成 かくしてこの発明は、カラム用チューブの内面に、オル
ガノポリシロキサン系の架橋高分子薄膜を形成してなシ
、該架橋高分子薄膜の表面に固定相液体をコートしてな
るクロマトグラフィ用カラムを要旨とするものである。
B) Structure of the Invention Thus, the present invention provides a chromatography method in which an organopolysiloxane crosslinked polymer thin film is formed on the inner surface of a column tube, and a stationary phase liquid is coated on the surface of the crosslinked polymer thin film. The purpose of this paper is to summarize the columns used in this paper.

上記カラム用チューブとしては、ガスクロマトグラフィ
や液体クロマトグラフィ用に用いられる種々の公知のチ
ューブが挙けられ、その材質はステンレススチール、ソ
ーダ石灰ガラス、硼珪酸ガラス、石英ガラス等のいずれ
であってもよい。
Examples of the column tube include various known tubes used for gas chromatography and liquid chromatography, and the material thereof may be stainless steel, soda lime glass, borosilicate glass, quartz glass, etc. .

ことに石英ガラスのキャピラリーチューブを用いた場合
、最も効果的である。 なお、かようなカラム用チュー
ブの外面には合成樹脂等の保護材が被覆されていてもよ
い。
In particular, it is most effective when a quartz glass capillary tube is used. Note that the outer surface of such a column tube may be coated with a protective material such as synthetic resin.

上記カラム用チューブの内面にこの発明の最も特徴とす
るオルガノポリシロキサン系の架橋高分子薄膜を形成し
た後、固定相液体を内面コートすることによpこの発明
のクロマトグラフィ用カラムが得られる。
After forming an organopolysiloxane crosslinked polymer thin film, which is the most characteristic feature of the present invention, on the inner surface of the column tube, the inner surface is coated with a stationary phase liquid to obtain the chromatography column of the present invention.

オルガノポリシロキサン系の架橋高分子薄膜ハ通常、カ
ラム内面にオルガノポリシロキサンヲ塗布した後そこで
架橋処理を行なわせることにより形成させるのが適当で
ある。 オルガノポリシロキサンとしては架橋性の官能
基を有するものが適しており少なくともビニル基を一つ
含有するもの例工l−1’、メチルフェニルビニルシリ
コーン、メチルビニルシリコーン、フェニルビニルシリ
コーン等のアルキル及び/又はアリールビニルシリコー
ンを用いるのが好ましい。 かようなオルガノポリシロ
キサンは、過酸化ベンゾイル、ジクミルペルオキシド、
ter−ブチルペルオキシド等のラジカル発生剤(場合
によっては他の架橋促進剤)を添加した後、加熱等の架
橋条件に付すことにより簡便に架橋を行なわせることが
できる。 従って、・ 通常、オルガノポリシロキサン
の揮発性有機溶媒溶液にラジカル発生剤等の架橋促進剤
を添加し、この溶液をカラム内面に塗布した後加熱して
有機溶媒の除去と架橋を行なわせることにより形成させ
るのが適している。 なお、上記ラジカル発生剤の添加
量はオルガノポリシロキサンに対して数重量−程度とす
るのが好ましい。 また、形成させる架橋高分子薄膜の
厚みは0.1〜0.5μm程度が適当であり、これらは
前記塗布処理の条件で調整することができる。
The organopolysiloxane-based crosslinked polymer thin film is normally formed by coating the inner surface of the column with organopolysiloxane and then subjecting it to crosslinking treatment. Suitable organopolysiloxanes include those having crosslinkable functional groups, such as those containing at least one vinyl group, such as alkyl and/or vinyl groups such as 1-1', methylphenyl vinyl silicone, methyl vinyl silicone, and phenyl vinyl silicone. Alternatively, it is preferable to use aryl vinyl silicone. Such organopolysiloxanes include benzoyl peroxide, dicumyl peroxide,
After adding a radical generator such as ter-butyl peroxide (or other crosslinking accelerator in some cases), crosslinking can be easily carried out by subjecting the mixture to crosslinking conditions such as heating. Therefore, usually, a crosslinking accelerator such as a radical generator is added to a solution of organopolysiloxane in a volatile organic solvent, and this solution is applied to the inner surface of the column and then heated to remove the organic solvent and cause crosslinking. It is suitable to form The amount of the radical generator to be added is preferably about several weights based on the organopolysiloxane. Further, the thickness of the crosslinked polymer thin film to be formed is suitably about 0.1 to 0.5 μm, and these can be adjusted by the conditions of the coating treatment.

この発明の固定相液体としては当該分野で知られた種々
のものが使用でき、具体的にはポリエチレングリコール
及びその誘導体、フタル酸エステル、オルガノポリシロ
キサン(無架橋)等が挙げられ、場合によっては分岐ア
ルカンのような極性がゼロかきわめて少ない液体を用い
ることもできる。 これらのうち、極性が中〜強である
固定相液体を用いた際にこの発明の効果が最も発揮され
る。
As the stationary phase liquid of this invention, various liquids known in the art can be used, and specific examples include polyethylene glycol and its derivatives, phthalate esters, organopolysiloxanes (non-crosslinked), etc. Liquids with zero or very little polarity, such as branched alkanes, can also be used. Among these, the effects of the present invention are most exhibited when a stationary phase liquid having medium to strong polarity is used.

上記構成において、カラム用チューブの内面には前記オ
ルガノポリシロキサン架橋層が形成されているため、固
定相液体は無処理のものに比してぬれ易くよシ安定に保
持されこの発明の効果に結びついているものと考えられ
る。
In the above structure, since the organopolysiloxane crosslinked layer is formed on the inner surface of the column tube, the stationary phase liquid is more easily wetted and more stably retained than an untreated liquid, which leads to the effects of the present invention. It is thought that the

(ホ)実施例 保護層として耐熱性樹脂層(ポリイミド樹脂)を外周に
被覆してなる口径0.2mの溶融石英ガラス製キャピラ
リーチューブに、メチルフェニルビニルシリコーン(シ
リコーンBK−54;ゼネラルエレクトリック社製)の
lW/v% n−ペンタン溶液にo−tW/v% (5
M−54に対して)の過酸化ベンゾイルを添加した溶液
を用いて内面コートを行なった。 なお、内面コートは
ダイナミックコーティング法により行なった。
(e) Example: Methylphenyl vinyl silicone (Silicone BK-54; manufactured by General Electric Co., Ltd.) was attached to a capillary tube made of fused silica glass with a diameter of 0.2 m and whose outer periphery was coated with a heat-resistant resin layer (polyimide resin) as a protective layer. ) to lW/v% n-pentane solution o-tW/v% (5
The inner surface was coated using a solution containing benzoyl peroxide (for M-54). Note that the inner surface coating was performed by a dynamic coating method.

次いでメチルフェニルビニルシリコーンをコートした上
記チューブを、ガスクロマトグラフのカラム槽にセット
し、100℃で8時間保持した後、800℃まで昇温し
15時間保持した。 この操作によって、残留溶媒(n
−ペンタン)の除去とメチルフェニルビニルシリコーン
の架橋が行なわし、−内面にメチルフェニルビニルシリ
コーンノ架橋高分子薄膜(厚さ約0.1μm)を形成し
たキャピラリーチューブが得られる。
The tube coated with methylphenylvinyl silicone was then set in a column tank of a gas chromatograph and held at 100°C for 8 hours, then raised to 800°C and held for 15 hours. This operation allows the residual solvent (n
- Pentane) is removed and the methylphenylvinyl silicone is crosslinked, and - a capillary tube having a crosslinked polymer thin film (about 0.1 μm thick) of the methylphenylvinyl silicone formed on the inner surface is obtained.

次いで、固定相液体として極性のメチルフェニルシリコ
ーン(シリコーンOV −17AppliedSci、
 Labs、社製)の5 w/v % n −ヘキサン
溶液をダイナミック法によって上記キャピラリチューブ
に通じ、溶媒を除去することにより、チューブ内面すな
わち架橋高分子薄膜の表面に厚さ約0.5μmの固定相
液体が均一にコートされた第1図に示すごときこの発明
の一実施例である極性フレキシブル石英キャピラリーカ
ラムが得られる。 なお、第1図において(1)は溶融
石英キャピラリーチューブ、(2)は架橋高分子薄膜、
(3)はコートされた固定相液体、(4)は耐熱性樹脂
層をそれぞれ示す。
Then, polar methylphenyl silicone (Silicone OV-17 Applied Sci,
A 5 w/v % n-hexane solution (manufactured by Labs, Inc.) was passed through the capillary tube using a dynamic method and the solvent was removed, thereby immobilizing the tube to a thickness of approximately 0.5 μm on the inner surface of the crosslinked polymer thin film. A polar flexible quartz capillary column, which is an embodiment of the present invention, as shown in FIG. 1, is obtained which is uniformly coated with a phase liquid. In Fig. 1, (1) is a fused silica capillary tube, (2) is a crosslinked polymer thin film,
(3) shows the coated stationary phase liquid, and (4) shows the heat-resistant resin layer.

なお、架橋高分子薄膜(2)を形成していない石英キャ
ピラリーチューブに直接、シリコーン0■−17をコー
トすることは困難である。
Note that it is difficult to directly coat silicone 0-17 on a quartz capillary tube on which the crosslinked polymer thin film (2) is not formed.

同様にして、ソーダ石灰ガラスや硼珪酸ガラスのキャピ
ラリーチューブ及び通常のクロマトグラフィ用チューブ
の円面に、種々の固定相液体を安定にコートしてなるク
ロマトグラフィ用カラムを得ることができる。
Similarly, a chromatography column can be obtained by stably coating various stationary phase liquids on the circular surface of a soda-lime glass or borosilicate glass capillary tube or a normal chromatography tube.

(へ)発明の効果 このように、この発明により、石英ガラスキャピラリー
チューブに、従来内面コートが困難とされていた種々の
極性固定相液体を安定にかつ均一にコートしたクロマト
グラフィ用カラムが提供される。 そして、内面コート
を可能としたオルガノポリシロキサンの架橋高分子薄層
は、石英ガラ′ スの特性を損なうことはない。 従っ
て固定相液体の極性の有無や強弱に制限されることなく
石英ガラスキャピラリーチューブの特性を生かしたクロ
マトグラフィ用カラムを得ることができ応用分野が拡大
される。
(F) Effects of the Invention As described above, the present invention provides a chromatography column in which a quartz glass capillary tube is stably and uniformly coated with various polar stationary phase liquids, which have conventionally been difficult to coat on the inside. . Furthermore, the crosslinked polymer thin layer of organopolysiloxane that makes it possible to coat the inner surface does not impair the properties of quartz glass. Therefore, it is possible to obtain a chromatography column that takes advantage of the characteristics of a silica glass capillary tube without being limited by the polarity or strength of the stationary phase liquid, and the field of application is expanded.

また、石英ガラス以外のキャピラリーチューブにおいて
も、従来のような粗面化処理を行なうことなく固定相液
体を均一に内面コートしたクロマトグラフィ用カラムが
得られる。
Furthermore, even for capillary tubes made of materials other than quartz glass, a chromatography column whose inner surface is uniformly coated with a stationary phase liquid can be obtained without performing the conventional surface roughening treatment.

さらに通常のクロマトグラフィ用カラムにおいても固定
相液体の保持性はより安定し、好ましいカラムが得られ
る。
Furthermore, even in ordinary chromatography columns, the retention of the stationary phase liquid is more stable, and a preferable column can be obtained.

従って、この発明のクロマトグラフィ用カラムは当該分
野において極めて有用なものである。
Therefore, the chromatography column of the present invention is extremely useful in this field.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、この発明のクロマトグラフィ用カラムの一実
施例を示す部分断面図である。 (1)・−・溶融石英キャピラリーチューブ、(2)・
・・架橋高分子薄膜、(3)・・・固定相液体、(4)
・−・耐熱性樹脂層。
FIG. 1 is a partial sectional view showing an embodiment of a chromatography column of the present invention. (1)--Fused silica capillary tube, (2)-
...Crosslinked polymer thin film, (3) ...Stationary phase liquid, (4)
・−・Heat-resistant resin layer.

Claims (1)

【特許請求の範囲】 1、カラム用チューブの内面に、オルガノポリシロキサ
ン系の架橋高分子薄膜を形成してなシ、該架橋高分子薄
膜の表面に固定相液体をコートしてなるクロマトグラフ
ィ用カラム。 2 カラム用チューブが、キャピラリーチューブである
特許請求の範囲第1項記載のカラム。
[Claims] 1. A column for chromatography, in which an organopolysiloxane crosslinked polymer thin film is formed on the inner surface of a column tube, and a stationary phase liquid is coated on the surface of the crosslinked polymer thin film. . 2. The column according to claim 1, wherein the column tube is a capillary tube.
JP58015298A 1983-01-31 1983-01-31 Column for chromatography Granted JPS59141064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58015298A JPS59141064A (en) 1983-01-31 1983-01-31 Column for chromatography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58015298A JPS59141064A (en) 1983-01-31 1983-01-31 Column for chromatography

Publications (2)

Publication Number Publication Date
JPS59141064A true JPS59141064A (en) 1984-08-13
JPH0555818B2 JPH0555818B2 (en) 1993-08-18

Family

ID=11884916

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58015298A Granted JPS59141064A (en) 1983-01-31 1983-01-31 Column for chromatography

Country Status (1)

Country Link
JP (1) JPS59141064A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6166960A (en) * 1984-09-10 1986-04-05 Yokogawa Hokushin Electric Corp Coating method of pipe inside
JPH03135760A (en) * 1989-10-20 1991-06-10 Hitachi Cable Ltd Production of quartz capillary column for gas chromatography
JPH0968522A (en) * 1995-08-31 1997-03-11 Toray Res Center:Kk Decomposing product analyzing method in sf6 gas
EP1698394A2 (en) * 2005-02-10 2006-09-06 Agilent Technologies, Inc. Deactivated surfaces for chromatographic separations and methods of making and using the same
WO2006104286A1 (en) * 2005-03-31 2006-10-05 Toyo Seikan Kaisha, Ltd. Gas-liquid two-phase flow chromatographic apparatus and method for analysis using said apparatus
JP2008501961A (en) * 2004-06-09 2008-01-24 メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフトング Open tubular capillary with connecting layer

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JPS6166960A (en) * 1984-09-10 1986-04-05 Yokogawa Hokushin Electric Corp Coating method of pipe inside
JPH03135760A (en) * 1989-10-20 1991-06-10 Hitachi Cable Ltd Production of quartz capillary column for gas chromatography
JPH0968522A (en) * 1995-08-31 1997-03-11 Toray Res Center:Kk Decomposing product analyzing method in sf6 gas
JP2008501961A (en) * 2004-06-09 2008-01-24 メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフトング Open tubular capillary with connecting layer
EP1698394A2 (en) * 2005-02-10 2006-09-06 Agilent Technologies, Inc. Deactivated surfaces for chromatographic separations and methods of making and using the same
EP1698394A3 (en) * 2005-02-10 2008-01-23 Agilent Technologies, Inc. Deactivated surfaces for chromatographic separations and methods of making and using the same
WO2006104286A1 (en) * 2005-03-31 2006-10-05 Toyo Seikan Kaisha, Ltd. Gas-liquid two-phase flow chromatographic apparatus and method for analysis using said apparatus
JPWO2006104286A1 (en) * 2005-03-31 2008-09-11 東洋製罐株式会社 Gas-liquid two-phase flow chromatography analyzer and analysis method using the device
US7827850B2 (en) 2005-03-31 2010-11-09 Tokyo Seikan Kaisha, Ltd. Gas-liquid two-phase flow chromatographic analyzer and method of analysis using the same analyzer
JP4807355B2 (en) * 2005-03-31 2011-11-02 東洋製罐株式会社 Gas-liquid two-phase flow chromatography analyzer and analysis method using the device

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