JPH07333148A - Analysis method for boron isotopic ratio - Google Patents
Analysis method for boron isotopic ratioInfo
- Publication number
- JPH07333148A JPH07333148A JP12356794A JP12356794A JPH07333148A JP H07333148 A JPH07333148 A JP H07333148A JP 12356794 A JP12356794 A JP 12356794A JP 12356794 A JP12356794 A JP 12356794A JP H07333148 A JPH07333148 A JP H07333148A
- Authority
- JP
- Japan
- Prior art keywords
- boron
- ratio
- concentration
- analysis
- water
- 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.)
- Withdrawn
Links
Landscapes
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明はホウ素同位体比の分析
方法に関し、特に水中に含有されるホウ素の同位体比を
迅速に計測するのに用いられるものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for analyzing a boron isotope ratio, and is particularly used for rapidly measuring the isotope ratio of boron contained in water.
【0002】[0002]
【従来の技術】ホウ素の全濃度はICP発光分析法等に
て容易に計測できるが、ホウ素原子のスペクトルの同位
体シフトは小さく、同位体比を計測することは事実上不
可能である。そのため、従来、ホウ酸の形態で単離し、
質量分析装置にて同位体比を計測していた。2. Description of the Related Art The total concentration of boron can be easily measured by ICP emission spectrometry or the like, but the isotope shift of the spectrum of the boron atom is small and it is practically impossible to measure the isotope ratio. Therefore, conventionally, it was isolated in the form of boric acid,
The isotope ratio was measured with a mass spectrometer.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、質量分
析装置を使用する方法は確実ではあるが、分析に時間が
かかりすぎ、また計測の自動化が困難であるという欠点
を有する。従って、迅速に定量でき、しかも自動計測が
可能であるような分析方法が必要である。However, although the method using the mass spectrometer is reliable, it has drawbacks that the analysis takes too much time and the automation of measurement is difficult. Therefore, there is a need for an analytical method that can be quantified quickly and that can be automatically measured.
【0004】この発明はこうした事情を考慮してなされ
たもので、従来と比べ、ホウ素同位体比の分析を迅速に
実施でき、かつ自動分析可能なホウ素同位体比の分析方
法を提供することを目的とする。The present invention has been made in view of these circumstances, and it is an object of the present invention to provide a method for analyzing a boron isotope ratio, which enables rapid analysis of the boron isotope ratio and is capable of automatic analysis, as compared with the prior art. To aim.
【0005】[0005]
【課題を解決するための手段】原子スペクトルの同位体
シフトよりも、分子振動スペクトルの同位体シフトの方
が一般に大きいことは良く知られている。従って、ホウ
酸の形態で存在するホウ素を振動スペクトルが良く知ら
れた分子に変換し、分子スペクトルの同位体シフトを計
測することで、ホウ素の同位体比を計測することが可能
である。It is well known that the isotope shift of the molecular vibration spectrum is generally larger than the isotope shift of the atomic spectrum. Therefore, it is possible to measure the isotope ratio of boron by converting boron existing in the form of boric acid into a molecule having a well-known vibrational spectrum and measuring the isotope shift of the molecular spectrum.
【0006】種々の分子形態を詳細に検討した結果、ホ
ウ酸水溶液を原子吸光分析で使用するような化学フレー
ムに導入することで、分子スペクトルが良く知られたB
O2となり、この目的に適合することが判った。BO2
は日ν2 及びν3 と呼ばれる振動モードにおいて、同位
体シフトが存在することが知られており、この振動モー
ドのスペクトルを計測し、濃度比が求めればそれがその
ままホウ素同位体比となる。As a result of detailed examination of various molecular morphologies, the introduction of an aqueous solution of boric acid into a chemical frame used for atomic absorption spectrometry has a well-known molecular spectrum B.
It became O 2 and was found to be suitable for this purpose. BO 2
It is known that there is an isotope shift in the vibration modes called day ν 2 and ν 3, and if the spectrum of this vibration mode is measured and the concentration ratio is determined, that is the boron isotope ratio.
【0007】この発明は、水中にホウ酸の形態で存在す
るホウ素の同位体比を計測するホウ素同位体比の分析方
法において、ホウ酸水を化学フレームに導入してBO2
に変換した後、10BO2 と11BO2の発光スペクトルに
おいて,質量数の違いに起因するスペクトルの同位体シ
フトを利用して10BO2 と11BO2 の濃度を求め、濃度
比をもってホウ素の同位体比を求めることを特徴とする
ホウ素同位体比の分析方法である。The present invention relates to a method for analyzing a boron isotope ratio for measuring the isotope ratio of boron existing in the form of boric acid in water, by introducing boric acid water into a chemical frame to produce BO 2
After conversion into, the concentration of 10 BO 2 and 11 BO 2 in the emission spectra of 10 BO 2 and 11 BO 2 was determined by using the isotope shift of the spectrum due to the difference in mass number, and the concentration ratio of boron A method for analyzing a boron isotope ratio, which is characterized by obtaining an isotope ratio.
【0008】[0008]
【作用】ホウ酸水溶液を化学フレームに導入する方法は
いくつか考えられるが、フレーム原子吸光分析で行われ
るように、ネブライザーにて導入する方法が最も簡単で
ある。導入されたホウ酸は比較的安定なBO2 に化学形
を変える。同位体によるスペクトルの波長の差は、 ρ=ω(10BO2 )/ω(11BO2 )=1.0363 である。BO2 のA←X吸収は396.5〜645.0
nmの範囲にあるが、狭い微細構造(振動回転構造)を有
している。この中で、対応する10BO2 と11BO2 のス
ペクトルを選べば良い。図2はその一例を示すもので、
BO2 の 2Π− 2Π遷移の0−0と1−1バンドのスペ
クトル写真の図を示す。この程度であれば、CCDを使
用したマルチチャンネルアナライザーを使用して同時に
計測が可能であり、濃度比を求めることで、ホウ素の同
位体比が容易に求められる。Although there are several possible methods of introducing the boric acid aqueous solution into the chemical flame, the method of introducing it with a nebulizer is the simplest, as is done by flame atomic absorption spectrometry. The boric acid introduced changes its chemical form to the relatively stable BO 2 . The difference in the wavelengths of the spectra due to the isotopes is ρ = ω ( 10 BO 2 ) / ω ( 11 BO 2 ) = 1.0363. The A ← X absorption of BO 2 is 396.5-645.0.
Although it is in the range of nm, it has a narrow fine structure (vibration rotation structure). Among them, the corresponding 10 BO 2 and 11 BO 2 spectra may be selected. Figure 2 shows an example of this.
The figure of the spectrum photograph of 0-0 and a 1-1 band of 2 ( 2)-( 2) transition of BO2 is shown. With this level, it is possible to simultaneously measure using a multi-channel analyzer using a CCD, and the isotope ratio of boron can be easily obtained by obtaining the concentration ratio.
【0009】[0009]
【実施例】以下、この発明の一実施例について説明す
る。図1は、この発明に係る分析システムの概略を示
す。まず、試料水(ホウ酸水)1は化学フレーム2に導
入され、BO2 に変化する。このBO2 は前記フレーム
2で励起されて発光する。つづいて、この発光を集光レ
ンズ3にて集光し、マルチチャンネルアナライザー4に
て分光する。ひきつづき、信号増幅器5にて増幅された
信号をデータ処理装置6にて処理し、10BO2 と11BO
2 の濃度比を算出する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below. FIG. 1 shows an outline of an analysis system according to the present invention. First, the sample water (boric acid water) 1 is introduced into the chemical flame 2 and changed into BO 2 . This BO 2 is excited in the frame 2 and emits light. Subsequently, the emitted light is condensed by the condenser lens 3 and dispersed by the multi-channel analyzer 4. Subsequently, the signal amplified by the signal amplifier 5 is processed by the data processing device 6 to obtain 10 BO 2 and 11 BO.
Calculate the concentration ratio of 2 .
【0010】このように、上記実施例では、ホウ酸水1
を化学フレーム2に導入してBO2に変換した後、10B
O2 と11BO2 の発光スペクトルにおいて,質量数の違
いに起因するスペクトルの同位体シフトを利用して10B
O2 と11BO2 の濃度を求め、濃度比をもってホウ素の
同位体比を求めるため、従来と比べ、ホウ素同位体比の
分析を迅速に実施でき、かつ自動分析を実現できる。As described above, in the above embodiment, 1 boric acid water is used.
Is introduced into the chemical frame 2 and converted into BO 2 , then 10 B
In the emission spectra of O 2 and 11 BO 2 , the isotope shift of the spectrum caused by the difference in mass number was used to obtain 10 B
Since the concentrations of O 2 and 11 BO 2 are obtained and the isotope ratio of boron is obtained based on the concentration ratio, the boron isotope ratio can be analyzed more quickly and automatic analysis can be realized, as compared with the conventional method.
【0011】なお、上記実施例では、発光スペクトルを
用いた場合について述べたが、この場合が装置構成が最
も単純である。しかし、分子スペクトルを計測するため
には、発光スペクトルに代えて吸収スペクトル,蛍光ス
ペクトルを利用することも当然可能である。In the above embodiment, the case where the emission spectrum is used has been described, but in this case, the device configuration is the simplest. However, in order to measure the molecular spectrum, it is naturally possible to use the absorption spectrum and the fluorescence spectrum instead of the emission spectrum.
【0012】[0012]
【発明の効果】以上詳述したようにこの発明によれば、
従来と比べ、ホウ素同位体比の分析を迅速に実施でき、
かつ自動分析可能な高信頼性なホウ素同位体比の分析方
法を提供できる。As described above in detail, according to the present invention,
Compared with the conventional method, the analysis of boron isotope ratio can be performed more quickly,
It is also possible to provide a highly reliable boron isotope ratio analysis method capable of automatic analysis.
【図1】この発明のホウ素同位体比の分析方法に係る分
析システムの概略を示す図。FIG. 1 is a diagram showing an outline of an analysis system according to a method for analyzing a boron isotope ratio of the present invention.
【図2】BO2 に関するスペクトル写真を示す図。FIG. 2 is a diagram showing a spectral photograph of BO 2 .
【符号の説明】 1…試料水、 2…フレーム、 3…
集光レンズ、4…マルチチャンネルアナライザー、
5…増幅器、6…データ処理装置。[Explanation of Codes] 1 ... Sample water, 2 ... frame, 3 ...
Condensing lens, 4 ... Multi-channel analyzer,
5 ... Amplifier, 6 ... Data processing device.
Claims (1)
同位体比を計測するホウ素同位体比の分析方法におい
て、 ホウ酸水を化学フレームに導入してBO2 に変換した
後、10BO2 と11BO2の発光スペクトルにおいて,質
量数の違いに起因するスペクトルの同位体シフトを利用
して10BO2 と11BO2 の濃度を求め、濃度比をもって
ホウ素の同位体比を求めることを特徴とするホウ素同位
体比の分析方法。1. A method for analyzing a boron isotope ratio for measuring the isotope ratio of boron existing in the form of boric acid in water, wherein boric acid water is introduced into a chemical frame to be converted into BO 2 , and then 10 BO is converted. in the emission spectrum of 2 and 11 BO 2, determine the concentration of 10 BO 2 and 11 BO 2 by using the isotope shift of the spectrum due to the difference in the mass number, the determination of the isotope ratio of boron with concentration ratio Characteristic method for analyzing boron isotope ratio.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12356794A JPH07333148A (en) | 1994-06-06 | 1994-06-06 | Analysis method for boron isotopic ratio |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12356794A JPH07333148A (en) | 1994-06-06 | 1994-06-06 | Analysis method for boron isotopic ratio |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07333148A true JPH07333148A (en) | 1995-12-22 |
Family
ID=14863782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12356794A Withdrawn JPH07333148A (en) | 1994-06-06 | 1994-06-06 | Analysis method for boron isotopic ratio |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07333148A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003030097A1 (en) * | 2001-09-28 | 2003-04-10 | Nhk Spring Co., Ltd. | Method of certifying article and article identifying structure |
-
1994
- 1994-06-06 JP JP12356794A patent/JPH07333148A/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003030097A1 (en) * | 2001-09-28 | 2003-04-10 | Nhk Spring Co., Ltd. | Method of certifying article and article identifying structure |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20010904 |