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A simple device capable of real-time direct sample injection analysis of mass spectrometer and its application

A technology of mass spectrometry and mass spectrometer, which is applied in the field of simple devices, can solve the problems of complicated and expensive instrument structures, and inflexible matching of mass spectrometers, and achieve the effects of simple device structure, fast detection speed, and simple devices

Inactive Publication Date: 2017-01-11
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the above-mentioned technical problems such as complex structure, expensive instrument and inflexible matching with the mass spectrometer to provide a realizable mass spectrometer with simple structure, low cost, good ionization efficiency and high sensitivity without sample pretreatment. A device for real-time direct sample injection analysis, and use it for mass spectrometry analysis of samples to be tested

Method used

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  • A simple device capable of real-time direct sample injection analysis of mass spectrometer and its application
  • A simple device capable of real-time direct sample injection analysis of mass spectrometer and its application
  • A simple device capable of real-time direct sample injection analysis of mass spectrometer and its application

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Embodiment 1

[0029] A simple device capable of real-time direct sample injection analysis by a mass spectrometer, comprising an inert gas supply device 1, an ion generator 2, a quartz glass tube 4, a heating belt 3, a straight dropper 7 and a temperature control device 5;

[0030] The inert gas is argon, and its supply device 1 is connected to the ion generator 2 with a silica gel tube, the outlet of the ion generator 2 is connected to the inlet of the quartz glass tube 4, and the outlet end of the quartz glass tube 4 is connected to one end of the straight dropper 7 Airtight connection, the other end of the straight dropper 7 is aligned with the glass capillary inlet 6 of the mass spectrometer 6, and the distance is 3-5mm;

[0031] The straight drip tube 7 is a three-section tapered straight tube formed at one time. The diameter of a section of the straight tube connected to the outlet end of the quartz glass tube 4 is 9mm and the length is 40mm. , The diameter of the last two sections of...

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Abstract

The invention discloses a simple device for realizing real-time direct injection analysis of a mass spectrometer. The device comprises an inert gas supply device, an ion generator, a quartz glass tube, a heating tape, a straight stilligout and a temperature control apparatus, wherein a pipeline for the inert gas supply device is connected with an inlet of the ion generator, an outlet of the ion generator is connected with an inlet of the quartz glass tube, the outlet end of the quartz glass tube is tightly connected with one end of the straight stilligout, the other end of the straight stilligout is aligned with a capillary tube inlet of the mass spectrometer, the heating tape is wound on the quartz glass tube, the temperature control apparatus is used for the power-on / off of the heating tape wound on the quartz glass tube. The device can be used for performing real-time direct injection of the mass spectrometer so as to analyze the chemical substance.

Description

technical field [0001] The invention relates to a simple device capable of realizing real-time direct sample injection analysis of a mass spectrometer and its application in direct real-time analysis of mass spectrometry. Background technique [0002] Direct real-time analytical mass spectrometry (hereinafter referred to as DART) is a new mass spectrometry ionization technique. Invented by the American JEOL company in 2005. This ionization source can be directly under atmospheric pressure conditions, neutral or inert gas (such as N 2 or He) is discharged to generate an excited state atom, and the excited state atom is rapidly heated and accelerated by an electric field to analyze and instantly ionize the symbolic compound or the compound to be tested on the surface of the sample to be tested, and perform mass spectrometry or tandem mass spectrometry detection, thereby Achieving real-time direct analysis of samples No need for tedious sample handling and preparation. It ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/68
Inventor 许旭韩玉良张耀利杨宇辉
Owner SHANGHAI INST OF TECH
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