Device for detecting metal ions in solution through APPJ (Atmospheric Plasma Jet)

Abstract

The invention provides a device for detecting metal ions in a solution through APPJ (Atmospheric Plasma Jet). The device is characterized in that a metal foil is arranged between a medium thin film and a glass slide so as to form a sandwich structure; dust-free paper is arranged on the medium thin film and is arranged under a plasma jet; a fluid sample is directly dropped on the dust-free paper by utilizing a dropper; optical fiber is arranged at one side of the plasma jet and is accessed to a computer after being connected with a spectrograph; when a working gas flows into an insulation medium tube through a gas inlet device, a power source is powered on, and a stable plasma jet is generated in an outlet of the insulation medium tube; when the plasma jet is in contact with the dust-free paper, the metal ions in the fluid sample on the dust-free paper are motivated after being evaporated, a characteristic atomic emission spectroscopy is generated, and the characteristic atomic emission spectroscopy is sent to the computer after being collected by the optical fiber and the spectrograph. The device disclosed by the invention abandons an additional sampling system, is simple in operation, low in cost, high in measurement accuracy and long in service life, and is capable of carrying out online detection on the metal ions in the solution in real time.

Description

technical field [0001] The invention relates to the field of detecting metal elements in a solution, in particular to a device for detecting metal ions in a solution by an atmospheric pressure plasma jet. Background technique [0002] As environmental problems such as water pollution become more and more serious, the detection of metal ions contained in aqueous solutions is very important. Although traditional inductively coupled plasma emission spectrometry or mass spectrometry can accurately detect the type and content of metal ions in solution, these methods are expensive, long-term, complicated, and cannot be detected online in real time. Therefore, for the detection of metal ions in solution, the development of miniaturized, low-cost, easy-to-operate, fast and real-time on-line detection devices has been paid more and more attention. [0003] Zheng Peichao and others described a liquid including a sample introduction and removal system, a plasma atomizer and a spectral...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects in the prior art, the object of the present invention is to provide a device for detecting metal ions in a solution by an atmospheric pressure plasma jet, which solves the problem that the existing device for detecting metal ions in a solution is bulky, complicated to operate, and has low detection accuracy and problems. Due to limitations such as short service life, it can realize real-time online detection of metal ions in solution without complex sampling system, simple operation, low cost, high measurement accuracy and long service life

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