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Simple device for realizing real-time direct injection analysis of mass spectrometer and application of simple device

A technology of mass spectrometry and mass spectrometer, which is applied in the field of simple devices, can solve the problems of inflexible mass spectrometer matching, expensive, complex instrument structure, etc., and achieve the effect of simple device structure, fast detection speed and simple device

Inactive Publication Date: 2014-12-24
SHANGHAI INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to provide a simple structure, low cost, ion A device with good conversion efficiency and high sensitivity that can realize real-time direct sample injection analysis of a mass spectrometer without sample pretreatment, and use it for mass spectrometry analysis of samples to be tested

Method used

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  • Simple device for realizing real-time direct injection analysis of mass spectrometer and application of simple device
  • Simple device for realizing real-time direct injection analysis of mass spectrometer and application of simple device
  • Simple device for realizing real-time direct injection analysis of mass spectrometer and application of simple device

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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 the condition of atmospheric pressure, neutral or inert gas (such as N2 or He) is discharged to generate excited state atoms, and the excited state atoms are rapidly heated and accelerated by electric field, so that they can be analyzed and ionized instantly to be measured The marker compound or the compound to be tested on the surface of the sample is detected by mass spectrometry or tandem mass spectrometry, so as to realize the real-time direct analysis of the sample without the need for tedious sample pr...

Claims

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Application Information

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Patent Type & Authority Applications(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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