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Apparatus and method for enhancing signal intensity of radio frequency glow discharge mass spectrometer by using adjustable magnetic field

A technology of radio frequency glow discharge and signal strength, applied in electronic/ion optical devices, discharge tubes, circuits, etc., can solve the problem of low signal strength of radio frequency glow discharge mass spectrometry, and achieve improved analysis performance, discharge stability, and signal strength. high effect

Inactive Publication Date: 2018-10-12
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a device and method that uses an adjustable magnetic field to enhance the signal intensity of radio frequency glow discharge mass spectrometry, so as to better solve the problem of low signal intensity of existing radio frequency glow discharge mass spectrometry

Method used

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  • Apparatus and method for enhancing signal intensity of radio frequency glow discharge mass spectrometer by using adjustable magnetic field
  • Apparatus and method for enhancing signal intensity of radio frequency glow discharge mass spectrometer by using adjustable magnetic field

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Embodiment 1

[0057] The present invention is further illustrated by an embodiment below. Under normal temperature and pressure, the metal material is processed into a cylindrical shell (take brass material and cylindrical shape as an example), the size of the copper shell: the diameter of the bottom surface is 50 mm, the height is 5 mm, the thickness of the copper shell is 0.5 mm, the size of the solenoid : The metal core diameter is 4 mm, the length is 49 mm, the wire diameter is 1 mm, the number of turns: 45, the solenoid is placed in the copper shell, and the solenoid is fixed with insulating material, and the lead wire of the solenoid is removed from the side of the shell Two small holes come out. The signal enhancement device is placed between the sample and the sampling rod, and the lead wire is passed through the small hole of the sheet-shaped battery and connected to the power supply (taking a DC power supply as an example), forming an adjustable magnetic field enhancement part.

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Embodiment 2

[0061] The present invention will be further described below through another embodiment. In the following examples, the signal intensities of typical elements detected by radio frequency glow discharge mass spectrometers with adjustable magnetic field enhancement parts and without adjustable magnetic field enhancement parts are compared. The greater the difference between the two, the better the signal enhancement effect ; Use the relative standard deviation (RSD %) to express the discharge stability of the non-conductive sample analyzed by the new device, and the smaller the value, the better the stability.

[0062] Taking the analysis of nonconductive materials by using the adjustable magnetic field enhanced part as an example, the pristine yttrium oxide (Y 2 o 3 ), Bi 12 SiO 20 (BSO) and Ba 5.52 La 0.32 Ti 2 Nb 8 o 30 (BTN) material is processed into a disc-shaped sample, the size is: cross-sectional diameter 20 mm, thickness 2 mm; nitric acid (HNO 3 ), ultrapure ...

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Abstract

The present invention provides an apparatus and method for enhancing the signal intensity of a radio frequency glow discharge mass spectrometer by using an adjustable magnetic field, to better solve the problem of low signal intensity of the existing radio frequency glow discharge mass spectrometer. The apparatus includes a sample introduction device which is provided with a sample introduction rod and on which samples are fixed; and an adjustable magnetic field enhancement portion which is provided with an outer casing and an electromagnet composed of an energizing solenoid and an iron core,the electromagnet is placed in the outer casing, and the adjustable magnetic field enhancement portion is fixed between the sample introduction rod of the sample introduction device and the samples.

Description

technical field [0001] The invention belongs to the technical field of inorganic mass spectrometry. Specifically, the invention relates to the field of radio frequency glow discharge mass spectrometer analysis materials. More specifically, the invention relates to a device that uses an adjustable magnetic field to enhance the signal intensity of radio frequency glow discharge mass spectrometry and method. Background technique [0002] Glow discharge mass spectrometry (GD-MS) is a direct analysis method for solid samples. It has the characteristics of direct solid sample injection, high sensitivity, small matrix effect, and one-time analysis of more than 70 elements. It is widely used in high-purity conductor materials. trace element analysis. With the increasing requirements for elemental analysis of non-conductive materials, radio frequency glow discharge mass spectrometry has gradually attracted people's attention. In the radio frequency mode, charged particles move back...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J49/04H01J49/06H01J49/20
CPCH01J49/0409H01J49/06H01J49/20
Inventor 钱荣卓尚军李中权高捷
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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