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Portable elemental spectrometer for online detection of liquid/gas phase samples

A portable spectrometer technology, applied in the field of portable spectrometers, can solve the problems of large volume of system equipment, inability to use test samples for real-time detection, large gas flow, etc., and achieve the effects of flexible operation, support for on-site detection, and easy portability

Active Publication Date: 2011-12-07
CHENGDU ALIEBN SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the high radio frequency (RF) power of the element measuring instrument, it needs to be equipped with a dedicated power supply line, the plasma maintains a large gas flow rate, the introduction system is large in size, and a special ventilation system needs to be configured. Therefore, the measuring instrument is a kind of The desktop fixed equipment used in the laboratory, people can only send samples to the laboratory for the measurement of trace elements, and cannot be used for real-time detection of test samples on-line or on-site

Method used

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  • Portable elemental spectrometer for online detection of liquid/gas phase samples
  • Portable elemental spectrometer for online detection of liquid/gas phase samples
  • Portable elemental spectrometer for online detection of liquid/gas phase samples

Examples

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Effect test

Embodiment 1

[0067] This embodiment is a portable elemental spectrometer for on-line detection of liquid samples, which mainly consists of a sample introduction system, a plasma atomization system and a spectrum measurement and processing system. The plasma atomization system is composed of a plasma torch tube, a microwave energy application device, a microwave mirror 5 , a plasma initiation device 12 , a stable chamber of the plasma torch and an exhaust gas discharge chamber 10 . The plasma torch tube is composed of a sample conveying inner tube 2, a middle tube 1 coaxially sleeved outside the inner tube and made of conductive metal, and an outer shell 4 coaxially sleeved outside the middle tube. The annular lumen between the tubes is a plasma maintenance gas delivery pipeline, the inlet of which is connected to the outlet of the plasma maintenance gas introduced into the system, and the inlet of the inner tube is connected to the outlet of the sample to be tested in the sample introductio...

Embodiment 2

[0069] This embodiment is also a portable elemental spectrometer for on-line detection of liquid samples. Its structure is basically the same as that of Embodiment 1. Sheet 6, a plasma sustaining gas distributor 14 is designed on the plasma sustaining gas conveying annular pipe, 8 evenly distributed ventilation holes are designed on the distributor annular disk, and 3 vent holes are designed on the inner tube wall of the plasma torch tube The balance hole 15 is used to balance the fluid pressure inside and outside the inner tube.

Embodiment 3

[0071] This embodiment is a portable elemental spectrometer for on-line detection of gas samples. Its structure is basically the same as that of Embodiment 1, the difference is the sample introduction system. The structure of the imported system is attached figure 2 shown. The gas sample to be measured is directly sent into the inner tube of the plasma torch by the gas pump. The plasma maintenance gas introduction subsystem still has two introduction branches, and one path is incorporated into the gas sample introduction subsystem through the meter 17. To make up for the lack of gas sample volume, the other path is connected to the inlet of the plasma sustaining gas delivery ring pipe in the plasma torch tube through the meter 16 to provide sustaining gas for the plasma.

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Abstract

The invention discloses a portable element spectrograph for online detection of a liquid / gas phase sample. The portable element spectrograph comprises a sample leading-in system, a plasma atomization system and a spectral measurement processing system, wherein the plasma atomization system mainly comprises a plasma torch tube, a microwave energy exertion device, and a plasma triggering device anda plasma torch stabilizing chamber; the plasma torch tube is composed of a sample conveying inner tube, a middle tube which is coaxially sleeved on the inner tube and uses a conducting metal as an outer material, and an outer tube shell coaxially sleeved out of the middle tube; the microwave energy exertion device is composed of a microwave source and an antenna connected with the microwave source through a microwave transmission conducting wire; and the antenna is arranged out of the tube wall of the middle tube to close to an outlet. The element spectrograph is suitable for the liquid phasesample as well as the gas phase sample, can realize the online detection in real time, has the advantages of high detection sensitivity, low power, less gas consumption, small volume and light weight, and can be used for detecting almost all elements in the periodic table.

Description

technical field [0001] The present invention relates to an elemental analysis instrument, in particular to a portable spectrometer for on-line real-time monitoring of liquid / gas phase samples based on microwave-induced plasma, in particular to transition metal elements, rare earth elements, actinide elements, alkali metals and alkaline earth metal elements microwave Spectroscopic detection of plasma sources. Background technique [0002] With the development and progress of industrial technology, transition metal elements, rare earth elements, actinide elements, alkali metals and alkaline earth metal elements are more and more widely used, and the pollution caused by them is also becoming more and more serious. Taking the preparation process of beryllium as an example, beryllium is extracted from beryl and converted into beryllium hydroxide for industrial and military purposes such as the synthesis of metal alloys and oxides, the production of ceramics, and the preparation o...

Claims

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Application Information

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IPC IPC(8): G01N21/73G01N21/01
Inventor 段忆翔
Owner CHENGDU ALIEBN SCI & TECH CO LTD
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