Front light path system of plasma atom emission spectrometer

Abstract

The invention relates to a front light path system of a plasma atom emission spectrometer, and the front light path system solves the technical problems that the front light path system of the spectrometer in the prior art is complex in structure, is inconvenient to operate, causes great light signal loss as a window sheet is polluted severely in a using process, and is low in detecting efficiency. The front light path system of the plasma atom emission spectrometer is provided with a main tube and a gas inlet branch tube, wherein the main tube is a hollow straight tube, and openings in the two ends of the main tube are separately provided with a light acquisition hole and a gas outlet; a window sheet is arranged at the light acquisition hole; the light acquisition hole is sealed by the window sheet; one end of the gas inlet branch tube is provided with a gas inlet, and the other end of the gas inlet branch tube is fixedly connected with the main tube; the gas inlet branch tube and themain tube are arranged in the form of a Y-shaped pipeline; a plasma stimulating region is arranged on the main tube between the interface of the gas inlet branch tube and the main tube and the gas outlet; and a plasma simulating device is arranged on the outer wall of the plasma stimulating region, so that the plasma stimulating region generates plasmas. The front light path system can be widelyapplied to the field of spectrometers of analysis apparatuses.

Description

technical field [0001] The invention relates to the field of spectrometers of analytical instruments, in particular to a front optical path system of a plasma atomic emission spectrometer. Background technique [0002] The front optical path system of the existing plasma atomic emission spectrometer mainly focuses the light into the optical fiber through the lens, and then transmits it to the spectrometer through the optical fiber, such as the method adopted by Hou Xiandeng's team (Anal.Chem.2014,86,5220-5224) . However, the use of lens focusing and optical fiber transmission, on the one hand, will reduce the collection efficiency of signal light and lose part of the energy. On the other hand, the optical path structure is more complicated, especially the optical fiber is difficult to apply to portable instruments. In the prior art, there is also a solution using a lens, in which a spectrometer is replaced by a spectroscopic detection system, and an optical fiber is omitted...

AI Technical Summary

Problems solved by technology

However, there is an insurmountable defect in light collection at the gas outlet. When detecting solids and other high-concentration liquid samples, the atomized sample gas flow will contain a lot of solid impurities, which will easily contaminate the condenser when it exits with the gas flow.

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