ATOMIC ABSORPTION SPECTROMETER ON THE BASIS OF THE ZEEMAN EFFECT
The invention relates to analytical instrument-making and can be used for determining the content of chemical elements in various types of samples by an atomic absorption spectrometry method. The problem addressed by the proposed invention is that of increasing the transmission of a spectrometer, re...
Gespeichert in:
Hauptverfasser: | , , |
---|---|
Format: | Patent |
Sprache: | eng ; fre ; rus |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | The invention relates to analytical instrument-making and can be used for determining the content of chemical elements in various types of samples by an atomic absorption spectrometry method. The problem addressed by the proposed invention is that of increasing the transmission of a spectrometer, reducing the analysis time by automating the measurement process, and also eliminating a potential source of errors in the measurement as a result of incorrect actions by an operator during manual adjustment of a compensator. The stated problem is solved in that an atomic absorption spectrometer on the basis of the Zeeman effect and comprising the following, connected optically: a radiation source with a wavelength corresponding to the resonance absorption of the element being determined, a polarizer, an optical modulator, a phase plate and an atomizer, which is arranged in a permanent magnetic field; a monochromator and radiation receiver, which are optically connected; and a signal recording and processing system which is electrically connected to the radiation receiver and is synchronized with the optical modulator; incorporates a radiation-converting device which is optically coupled to the atomizer and to the monochromator and is in the form of a second polarizer and fibreoptic bundle with a variable profile, which are optically coupled, wherein the input end of the fibreoptic bundle obtains a shape coinciding with a sectional profile of the radiation beam, while the output end obtains an extended shape and is aligned with an input aperture of the monochromator.
La présente invention relève du domaine de la construction d'instruments analytiques et peut être utilisée pour la détermination de la teneur en éléments chimiques des échantillons de différents types par procédé de spectrométrie à absorption atomique. L'objectif visé par l'invention est d'augmenter la force lumineuse du spectromètre, la réduction du temps d'analyse grâce à l'automatisation du processus de mesure et l'élimination d'une source potentielle d'erreurs de mesure causées par des actions incorrectes de l'opérateur lors du réglage manuel du compensateur; l'objectif visé est réalisé grâce au fait que le spectromètre à absorption atomique utilisant l'effet de Zeeman comprend une source de rayonnement à longueur d'onde correspondant à l'absorption par résonance de l'élément déterminé, un polariseur, un modulateur optique, une plaquette de phase et un atomiseur, disposé dans le champ magnétique p |
---|