Synchronous acquisition device and method of atom and molecular spectrum

Abstract

The invention discloses a synchronous acquisition device and method of an atom and molecular spectrum. The method comprises the following steps: striking the surface of a to-be-detected sample repeatedly by focused energy of a laser device, stimulating the to-be-detected sample to be at a plasma state, and collecting an atom spectrum transmitted by the to-be-detected sample at the plasma state by an optical fiber collector via a visible spectrograph; striking the surface of the to-be-detected sample repeatedly by the focused energy of the laser device, and collecting an infrared spectrum transmitted externally by the surface of the to-be-detected sample by an infrared optical fiber collector via the visible spectrograph so as to obtain a molecule spectrum; transmitting the molecular spectrum to a signal collecting control system by the atom spectrum and the infrared spectrograph via the visible spectrograph; and matching the atom spectrum and the molecular spectrum by the signal collecting control system so as to obtain the corresponding relationship between the atom spectral line and a functional group. The method can be used for obtaining the molecule and atom spectrum with the same size synchronously within a short time, and achieving the correlation of the characteristic relation of the atom spectrum and the molecular spectrum.

Description

technical field [0001] The invention relates to the technical fields of spectroscopy and analytical chemistry, in particular to a device and method for synchronously acquiring atomic and molecular spectra. Background technique [0002] Spectroscopy is an effective means to characterize and measure the structure of matter. Spectral characterization and measurement methods include atomic spectroscopy and molecular spectroscopy. Atomic spectroscopy (such as X-ray fluorescence spectroscopy, laser-induced breakdown spectroscopy, etc.) characterizes the element type and concentration of the sample to be tested through the energy and transition of atoms. Molecular spectroscopy (such as Fourier transform infrared spectroscopy, Raman spectroscopy, laser ring-down spectroscopy, etc.) characterizes the molecular form and quantity of the sample to be tested through the vibration and rotation of functional groups. [0003] Both atomic spectroscopy and molecular spectroscopy have been w...

AI Technical Summary

Problems solved by technology

[0005] (1) Many molecular and atomic spectrum measurements require a certain amount of time. For example, infrared spectrum measurement requires certain accessory preparation or preprocessing (such as infrared emission measurement, preheating is required), and real-time calibration, so it is difficult to obtain molecules and atoms at the same time. Spectrum, and some samples have strong time-varying characteristics;

[0006] (2) The measurement scales of the two are inconsistent. Due to the need to induce atomic energy level transitions, the area of ​​action of the atomic spectrum is often much smaller than that of the molecular spectrum;

[0007] (3) There is no corresponding processing method for atomic spectrum and molecular spectrum, and the existing methods cannot realize the correlation analysis between the two

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