JPS6052748A - Light source apparatus for emission spectrochemical analysis - Google Patents
Light source apparatus for emission spectrochemical analysisInfo
- Publication number
- JPS6052748A JPS6052748A JP58161009A JP16100983A JPS6052748A JP S6052748 A JPS6052748 A JP S6052748A JP 58161009 A JP58161009 A JP 58161009A JP 16100983 A JP16100983 A JP 16100983A JP S6052748 A JPS6052748 A JP S6052748A
- Authority
- JP
- Japan
- Prior art keywords
- thread
- sample
- plasma
- tube
- solution
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
- G01N21/73—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited using plasma burners or torches
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Plasma & Fusion (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Plasma Technology (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
Description
【発明の詳細な説明】
何）産業上の利用分野
本発明は発光分光分析法において試料を気化発光せしめ
る光源装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention: Field of the Invention The present invention relates to a light source device that vaporizes a sample and causes it to emit light in emission spectrometry.
（ロ）従来技術
近年この種の発光装置として誘導結合プラズマ（ＩＣＰ
）法が広く用いられている。これは溶液試料を霧化して
不活性ガスに混合させ、これを高周波コイルからの誘導
作用で不活性ガス流に形成されたプラズマの中心部に導
入するものであり、従来のアーク放電法などに比し安定
性が高いので精度の高い分析ができる反面、次のような
問題点がある。(b) Prior art In recent years, inductively coupled plasma (ICP)
) method is widely used. In this method, a solution sample is atomized and mixed with an inert gas, and this is introduced into the center of the plasma formed in the inert gas flow by the induction effect from a high-frequency coil, which is different from conventional arc discharge methods. Although it is more stable and allows for highly accurate analysis, it has the following problems.
■、霧化されたエーロゾルの粒度を揃えて微少粒子のみ
をプラズマに導入し、残りはドレンから排出している。(2) The particle size of the atomized aerosol is made uniform so that only minute particles are introduced into the plasma, and the rest is discharged through the drain.
そのために試料の利用効率は５チ以下で、分析にはかな
りの量の試料を必要とする。Therefore, the sample utilization efficiency is less than 5 inches, and a considerable amount of sample is required for analysis.
■、試料ガスを噴出するパイプすなわちアルゴントーチ
を構成する三重管の中心管の先端部に試料が析出して管
出口が詰まり易く、これを避けるために溶液濃度を一定
値以下に下げる必要がある。■The sample tends to deposit at the tip of the central tube of the triple pipe that makes up the sample gas ejecting pipe, which makes up the argon torch, and the tube outlet is easily clogged.To avoid this, it is necessary to lower the solution concentration below a certain value. .
捷た吸い上げ量を安定化させるためにも濃度は低い方が
よい。したがって検出感度を高くすることができない。The lower the concentration, the better to stabilize the amount of siphoning. Therefore, detection sensitivity cannot be increased.
ＩＩｌ、試料ガスをプラズマの中心部へ導入するために
三重管構造のプラズマトーチを用いて筒状のプラズマを
形成する必要がある。IIl. In order to introduce the sample gas into the center of the plasma, it is necessary to form a cylindrical plasma using a plasma torch with a triple tube structure.
■、試料霧化器を構成する試料霧化装置が高価である。(2) The sample atomizer that constitutes the sample atomizer is expensive.
儒） 目 的
本発明は上記の問題点を解消するものであり、溶液試料
の担体として不活性ガスの代りに無機質材料よりなる糸
を使用することにより、わずかな試料で高感度の分析が
可能であり、しかも構造簡単で安価な工ＣＰ分析の試料
導入方法を提供することを目的とするものである。Purpose The present invention solves the above-mentioned problems, and by using threads made of inorganic material instead of inert gas as carriers for solution samples, highly sensitive analysis is possible with a small number of samples. The purpose of this invention is to provide a method for introducing a sample for CP analysis that is simple in structure and inexpensive.
（ニ）構 成
本発明は高融点無機質繊維束よりなる糸を定速溶液試料
を気化発光せしめるプラズマ発生手段とで構成される。(D) Structure The present invention is composed of a plasma generating means for vaporizing and emitting light from a solution sample at a constant velocity using threads made of high-melting point inorganic fiber bundles.
（ホ）実施例 図は本発明装置の一実施例を示しだものである。(e) Examples The figure shows one embodiment of the device of the present invention.
１は無機質繊維束よりなる糸であり、材料としては炭素
繊維が最も適している。特に２８００〜３３０００にの
高温で熱処理されたいわゆる黒鉛繊維は融巻き取りボビ
ン駆動用モータ４、ガイドローラ５などで構成され一定
の速度で下方から上方に向つて糸１を走行させる。６は
溶液試料含浸室で、酸素を遮断するために可撓弁７を通
して糸１を導入するようになっており、この中でベリメ
タリックポンプ８により定量的に送られてくる試料溶液
Ａが糸ｌに含浸される。９は三重管構造のプラズマトー
チで、外管には冷却用のアルゴンガス、中管にはプラズ
マ形成用のアルゴンガスが供給され、中心管を通して試
料を含浸した糸ｌが供給される。1 is a thread made of an inorganic fiber bundle, and carbon fiber is the most suitable material. In particular, the so-called graphite fibers heat-treated at a high temperature of 2,800 to 33,000 ℃ are made up of a fusing winding bobbin driving motor 4, a guide roller 5, etc., and the yarn 1 is made to run from the bottom to the top at a constant speed. Reference numeral 6 denotes a solution sample impregnation chamber, into which the thread 1 is introduced through a flexible valve 7 in order to cut off oxygen. Impregnated with l. Reference numeral 9 denotes a plasma torch having a triple tube structure; the outer tube is supplied with argon gas for cooling, the middle tube is supplied with argon gas for plasma formation, and the thread 1 impregnated with the sample is supplied through the center tube.
１０は高周波コイルの誘導作用で形成されたプラズマ炎
であり、その中心部を糸１が上方に貫通している。１１
はプラズマ炎１０で加熱された糸が酸素に触れないよう
にするためにアルゴンガスを供給するだめのダクトであ
る。10 is a plasma flame formed by the induction effect of a high-frequency coil, and the thread 1 passes upward through the center of the flame. 11
is a duct for supplying argon gas to prevent the yarn heated by the plasma flame 10 from coming into contact with oxygen.
プラズマの中心部の温度は５０００〜６０００°にであ
シ、糸１を長時間プラズマ炎内に滞留させると繊維が気
化してしまうため、糸を適度の走行速度で通過させる必
要がある。このとき炭素繊維は繊維自体に導電性を有す
るために高周波誘導加熱によって繊維内部からも発熱し
、含浸されていた試料中の各元素が完全に気化、励起さ
れ、きわめて効率よく感度の高い分光分析が可能となる
。The temperature at the center of the plasma should be between 5000 and 6000°, and if the yarn 1 were allowed to stay in the plasma flame for a long time, the fibers would vaporize, so the yarn must be passed through at an appropriate speed. At this time, since carbon fiber itself has electrical conductivity, heat is generated from within the fiber by high-frequency induction heating, and each element in the impregnated sample is completely vaporized and excited, allowing extremely efficient and sensitive spectroscopic analysis. becomes possible.
械的な力により直接プラズマ内に試料を導入できるので
、高価な試料霧化器が不要となり、まだ試料が無駄なく
利用できるので試料の量が少い場合にも分析が可能であ
りまたアルゴントーチの中心管からエーロゾルを噴出さ
せる必要がないので管出口に試料が析出して詰まるとい
う恐れがなく、したがってまた試料の濃度を低くする必
要がないので検出感度を高くすることができるという利
点がある。なお本実施例では三重管構造のプラズマトー
チを使用しているが、試料の相体がガスではなく機緘的
な力で試料をプラズマ内に導入できるので、プラズマ炎
の形状を筒状にする必要がなく、したがって中心管を省
略して糸を直接中管内に導入するようにしてもよい。そ
のように構成すればプラズマ炎の形状を小さくすること
ができ、装置の小型化が可能となる。Since the sample can be introduced directly into the plasma using mechanical force, there is no need for an expensive sample atomizer, and the sample can still be used without wasting it, making analysis possible even when the amount of sample is small. Since there is no need to eject an aerosol from the central tube of the tube, there is no risk of sample precipitation and clogging at the tube outlet, and there is also no need to lower the concentration of the sample, which has the advantage of increasing detection sensitivity. . In this example, a plasma torch with a triple tube structure is used, but since the sample is not a gas but can be introduced into the plasma using a mechanical force, the shape of the plasma flame is made cylindrical. This is not necessary, and therefore the central tube may be omitted and the thread may be introduced directly into the central tube. With such a configuration, the shape of the plasma flame can be made small, and the device can be downsized.
図は本発明の一実施例を示す側面断面図である。
１・・・糸、２・・・巻き戻しボビン、３・・・巻取り
ボビン、４・・・巻き取りボビン駆動用モータ、５゛・
・・ガイドローラ、６・・・溶液試料含浸室、７・・・
弁、８・・・ペリスタリックポンプ、９・・・プラズマ
トーチ、１０・・・プラズマ炎、１１・・・ダクト、Ａ
・・・溶液試料。
代理人 弁理士 縣 浩 介The figure is a side sectional view showing one embodiment of the present invention. 1... Thread, 2... Rewinding bobbin, 3... Winding bobbin, 4... Winding bobbin drive motor, 5.
...Guide roller, 6...Solution sample impregnation chamber, 7...
Valve, 8... Peristaltic pump, 9... Plasma torch, 10... Plasma flame, 11... Duct, A
...Solution sample. Agent Patent Attorney Kosuke Agata
Claims (1)
徴とする発光分光分析用光源装置。1. A light source device for emission spectroscopic analysis, comprising a plasma generating means for vaporizing and emitting light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58161009A JPS6052748A (en) | 1983-08-31 | 1983-08-31 | Light source apparatus for emission spectrochemical analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58161009A JPS6052748A (en) | 1983-08-31 | 1983-08-31 | Light source apparatus for emission spectrochemical analysis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6052748A true JPS6052748A (en) | 1985-03-26 |
| JPH0467146B2 JPH0467146B2 (en) | 1992-10-27 |
Family
ID=15726841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58161009A Granted JPS6052748A (en) | 1983-08-31 | 1983-08-31 | Light source apparatus for emission spectrochemical analysis |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6052748A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5233156A (en) * | 1991-08-28 | 1993-08-03 | Cetac Technologies Inc. | High solids content sample torches and method of use |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3174393A (en) * | 1961-06-29 | 1965-03-23 | Baird Atomic Inc | Excitation source for emission spectroscopy |
-
1983
- 1983-08-31 JP JP58161009A patent/JPS6052748A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3174393A (en) * | 1961-06-29 | 1965-03-23 | Baird Atomic Inc | Excitation source for emission spectroscopy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5233156A (en) * | 1991-08-28 | 1993-08-03 | Cetac Technologies Inc. | High solids content sample torches and method of use |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0467146B2 (en) | 1992-10-27 |
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