Laser-induced breakdown spectroscopy-atmospheric pressure glow discharge combined device
A technology of laser-induced breakdown and glow discharge, which is applied in the field of atomic spectroscopy and can solve the problems of no detection device
Inactive Publication Date: 2021-10-15
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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[0004] If the combination of atmospheric pressure glow discharge and laser-induced breakdown spectroscopy is used properly, it is possible to improve the detection sensitivity and application range of laser-induced breakdown spectroscopy. However, there is no detection device that combines the two on the market.
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[0025] The present invention will be further described below in conjunction with the accompanying drawings and the following embodiments. It should be understood that the accompanying drawings and the following embodiments are only used to illustrate the present invention, rather than limit the present invention; parts, and omit repeated descriptions.
[0026] A laser-induced breakdown spectroscopy-atmospheric pressure glow discharge combined device (hereinafter sometimes referred to as the combined device) is disclosed here, such as figure 1 As shown, the laser-induced breakdown spectroscopy-atmospheric pressure glow discharge combined device includes a laser-induced breakdown spectroscopy system, an atmospheric pressure glow discharge system and a sample chamber. The laser-induced breakdown spectroscopy system strips the solid sample into aerosol particles and generates laser-induced breakdown plasma, and forms a laser-induced breakdown plasma discharge region on the surface...
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Abstract
The invention provides a laser-induced breakdown spectroscopy-atmospheric pressure glow discharge combined device. The device comprises a laser-induced breakdown spectroscopy system, an atmospheric pressure glow discharge system and a sample cavity, wherein a solid sample is placed at the bottom of the sample cavity; the laser-induced breakdown spectroscopy system is used for denudating the solid sample into aerosol particles and generating laser-induced breakdown plasma to form a laser-induced breakdown plasma discharge area on the surface of the solid sample; the atmospheric pressure glow discharge system forms an atmospheric pressure glow discharge area on the surface of the solid sample in a form of generating atmospheric pressure glow discharge plasma in an atmospheric environment; the laser-induced breakdown plasma discharge area and the atmospheric pressure glow discharge area are overlapped on the surface of the solid sample and jointly excite aerosol particles in the sample cavity.
Description
technical field [0001] The invention belongs to the field of atomic spectrum analysis, relates to the technical field of atomic emission spectrum excitation source, and more specifically relates to a laser-induced breakdown spectrum-atmospheric pressure glow discharge combination that can be applied to the field of atomic emission spectroscopy for micro-area analysis of solid samples device. Background technique [0002] Laser-induced breakdown spectroscopy (LIBS) is a spectroscopic detection technology that can perform nondestructive or minimally destructive, multi-element simultaneous, fast, and in-situ analysis of multi-state substances such as solid, liquid, and gas; based on these advantages , LIBS technology is widely used in environmental monitoring, industry, antique detection, agriculture and food chemistry, alien geological exploration and other fields. An obvious problem existing in LIBS technology at present is that the detection sensitivity is relatively low, a...
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IPC IPC(8): G01N21/71G01N21/67
CPCG01N21/718G01N21/67
Inventor 汪正李悦张国霞
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI