Portable normal-voltage glow discharge micro plasma spectrograph and application method thereof

A micro-plasma and glow discharge technology, applied in the field of emission spectrum of analytical instruments, can solve the problems of large volume, high gas consumption, high power consumption, etc., and achieve the effects of high sensitivity, low gas consumption and low power consumption

Active Publication Date: 2018-05-04
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

Large-scale spectral analysis instruments in laboratory analysis can achieve stable, accurate, and highly sensitive detection of elements, but because of their shortcomings such as high gas consumption, high power consumption, and large volume, they can only be analyzed and tested in laboratories, which cannot meet the requirements of field analysis and testing. needs

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  • Portable normal-voltage glow discharge micro plasma spectrograph and application method thereof
  • Portable normal-voltage glow discharge micro plasma spectrograph and application method thereof
  • Portable normal-voltage glow discharge micro plasma spectrograph and application method thereof

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0040] like figure 1 As shown, the portable atmospheric pressure glow discharge micro-plasma spectrometer (hereinafter referred to as "portable APGD spectrometer") includes a sample introduction system 1, an excitation light source 2, a detection system 3, an energy supply system 4 and a control display system 5, wherein the excitation The light source 2 is an atmospheric glow discharge micro-plasma (hereinafter referred to as "APGD excitation light source"), which provides energy for evaporation, dissociation and excitation of the sample, and generates characteristic radiation signals. like figure 2 As shown, the sample introduction system 1 is used to introduce samples, including one or more of the sampling modules such as the electrothermal evaporation ...

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Abstract

The invention relates to a portable normal-voltage glow discharge micro plasma spectrograph and an application method thereof. The portable normal-voltage glow discharge micro plasma spectrograph mainly comprises a sample introduction system, an excitation light source, a detection system, a power supply system and a control display system, wherein the excitation light source is normal-voltage glow discharge micro plasma which is capable of maintaining stable glow discharge micro plasma at normal voltage; and the normal-voltage glow discharge micro plasma is driven by a direct-current high voltage and mainly comprises a high-voltage module, a light sensitive feedback module, two solid electrodes, a quartz sleeve and a plastic sealing sleeve. Due to adoption of the normal-voltage glow discharge micro plasma as the excitation light source, minimized portable development requirements of spectrographs can be met very well, the portable normal-voltage glow discharge micro plasma spectrograph has the characteristics of being good in stability, high in sensitivity, high in efficiency, small in size, low in cost, good in environment friendliness, and the like, and rapid detection requirements on metal and nonmetal elements in on-site analysis can be met.

Description

technical field [0001] The invention belongs to the field of emission spectra of analytical instruments, in particular to a portable atmospheric pressure glow discharge micro-plasma spectrometer. Background technique [0002] Emission spectrometry is a very commonly used analysis technique for element content detection in the fields of geology, environment and other sciences, and it is also an important means for ecological construction and environmental protection. Large-scale spectral analysis instruments in laboratory analysis can achieve stable, accurate, and highly sensitive detection of elements, but because of their shortcomings such as high gas consumption, high power consumption, and large volume, they can only be analyzed and tested in laboratories, which cannot meet the requirements of field analysis and testing. demand. [0003] The concept of lab on a chip (lab on a chip) and micro total analysis system (micro total analysis system, μ-TAS) has been put forward,...

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Application Information

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IPC IPC(8): G01N21/63
CPCG01N21/63G01N21/67
Inventor 朱振利杨春何栋郑洪涛
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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