Inductively coupled plasma-atomic emission spectrometry/mass spectrometry (ICP-AES/ MS) switching-free type organic sampling device

Abstract

The invention relates to the field of chemical test instruments, and in particular relates to an inductively coupled plasma-atomic emission spectrometry / mass spectrometry (ICP-AES / MS) switching-free type organic sampling device which comprises a box body. The organic sampling device is characterized in that the box body is internally provided with a height adjusting device; a box-type fixed rack is connected above the height adjusting device; the box-type fixed rack is internally provided with an atomization device; the upper part of the atomization device is connected with an aerosol discharge pipe which penetrates through a top plate of the fixed rack and a top plate of the box body and extends out of the box body; the bottom of the atomization device is provided with a waste liquid discharge pipe which penetrates through the side wall of the box body and extends out of the box body; the side wall of the upper part of the aerosol discharge pipe is also communicated with a gas inlet pipe; the gas inlet pipe is provided with a gas flow rate control device. The device is simple and compact in structure, an aerosol outlet of an atomizing chamber can be conveniently adjusted to be matched with the height of a central moment pipe, the atomization efficiency of the atomizing chamber is improved, and the device is avoided from being disassembled; after the device is adopted, two sampling modes including organic phase and aqueous phase can be switched in an online way.

Description

technical field [0001] The invention relates to the field of chemical test instruments, in particular to an ICP-AES / MS switch-free organic sampling device. Background technique [0002] Both ICP-AES and ICP-MS (hereinafter referred to as "ICP-AES / MS") are large-scale precision detection instruments that use inductively coupled plasma (ICP) as the ionization source. The main body of ICP is a three-layer quartz sleeve. The upper end of the torch is wound with a load coil, and the three-layer tube passes through the carrier gas, auxiliary gas and cooling gas from the inside to the outside, and the load coil is powered by a high-frequency power supply coupling to generate a magnetic field perpendicular to the plane of the coil. If the argon gas is ionized by a high-frequency device, the argon ions and electrons will collide with other argon atoms under the action of an electromagnetic field to generate more ions and electrons, forming an eddy current. The powerful electric curr...

AI Technical Summary

Problems solved by technology

The existing solution is that before the analysis of organic samples, a set of organic sampling device needs to be replaced, including replacing the spray chamber with a spray chamber with cooling function, and the connection between the spray chamber and the rectangular tube needs to be replaced according to the conditions of each instrument. Connecting parts, disassembly and assembly operations are cumbersome, and two independent devices for temperature control and flow control are required, which occupy space and have many pipelines

In addition, since the existing atomization chambers with refrigeration function mostly use T-shaped outlets, one end of which is fed with oxygen, and the other end is connected to the central rectangular tube, the connection operation is cumbersome, and there are defects such as poor airtightness

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