Liquid cathode glow discharge emission spectrum detection metal ion apparatus

A technology of glow discharge and emission spectroscopy, applied in the field of analytical chemical spectroscopy, to achieve the effects of low power consumption, high sensitivity and small sample volume

Inactive Publication Date: 2013-06-19
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Liquid cathode glow discharge emission spectrum detection metal ion apparatus
  • Liquid cathode glow discharge emission spectrum detection metal ion apparatus
  • Liquid cathode glow discharge emission spectrum detection metal ion apparatus

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Embodiment 1

[0041] Firstly, the three-dimensional platform of the light source part is designed ( figure 2 ), liquid pool ( image 3 ), the corresponding dimensions are shown in the figure; figure 2 For the three views of the three-dimensional platform, the designed three-dimensional platform can realize precise control in the X, Y, and Z directions, including coarse adjustment and fine adjustment (accuracy up to 1mm). image 3 It is a schematic diagram of the top view and cross-section of the liquid pool. The designed liquid pool is made of polytetrafluoroethylene material through a certain process. The inner wall radius of the container is 46mm, and the volume is about 60ml. In particular, a small hole and a large hole are respectively opened at the center of the liquid pool and 15 mm away from the center, with diameters of 1.2 mm and 4.3 mm, respectively. Figure 4 It is a schematic diagram of the overall connection of the liquid cathode glow discharge emission spectrum detection d...

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Abstract

The invention relates to a liquid cathode glow discharge emission spectrum detection metal ion apparatus, which comprises a light source generation part used for generating glow discharge, a splitting system used for performing light splitting treatment on glow discharge emission spectrum generated by the light source generation part, a detection apparatus used for detecting the emission spectrum after light splitting treatment, and a data process system used for analyzing and processing the signals of the detection apparatus; wherein, the light source generation part comprises a metal anode connected to the anode of high voltage supply, a liquid pool filled with an electrolyte connected to the cathode of the high voltage supply; and a sample introduction unit, which comprises a sample introduction pipe which is vertically passed through the liquid pool, and the top of the sample introduction pipe is positioned below the metal anode; the sample introduction unit enables a solution to be measured to escape from the top of the sample introduction pipe, thereby the solution to be measured overflowed from the top of the sample introduction pipe and the metal anode form a glow discharge area.

Description

technical field [0001] The invention belongs to the field of analytical chemical spectrum analysis, and relates to a device for detecting metal ions by a liquid cathode glow discharge emission spectrum, in particular to a device for detecting metal ions by a liquid cathode glow emission spectrum driven by direct current under atmospheric pressure. Background technique [0002] The traditional metal ion detection methods based on spectroscopic technology mainly include atomic absorption spectrometry and atomic emission spectrometry. Commonly used detection instruments include flame atomic absorption spectrometer, inductively coupled plasma emission spectrometer and so on. However, these commonly used detection instruments are bulky, expensive, and the detection cost is high, so they are difficult to be used for field analysis and monitoring. With the development of science and technology and the improvement of detection level, people began to study simple, rapid and low-cost...

Claims

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Application Information

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IPC IPC(8): G01N21/67
CPCG01N21/67G01N21/69
Inventor 汪正张真
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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