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Quantitative concentration and enrichment sample injecting device and method of proton transfer reaction ion source

A technology of proton transfer reaction and quantitative concentration, which is applied in the direction of particle separation tubes, parts of particle separator tubes, sample introduction/extraction, etc., can solve problems such as poor performance, and achieve the goals of increasing concentration, reducing diffusion, and improving sensitivity Effect

Inactive Publication Date: 2018-01-12
BEIJING SANXIONG SCI & TECH CO
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Problems solved by technology

However, it does not perform well in clinical, forensic, and security checks at very low concentrations.

Method used

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  • Quantitative concentration and enrichment sample injecting device and method of proton transfer reaction ion source
  • Quantitative concentration and enrichment sample injecting device and method of proton transfer reaction ion source

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Embodiment 1

[0023] Such as figure 1 or figure 2 As shown, the quantitative enrichment and enrichment sampling device for the proton transfer reaction ion source includes: a collection / sampling six-way valve 7, a semiconductor refrigerator 5, an electric heating driver 11, an air extraction meter 9, an air extraction pump 8, and a central controller 12.

[0024] The semiconductor refrigerator 5 is a water-cooled semiconductor refrigerator or an air-cooled semiconductor refrigerator. The vacuum refrigeration cavity 10 of the semiconductor refrigerator 5 is provided with a condensation collecting pipe 6 which can be directly electrically heated. The condensation collecting tube 6 which can be directly electrically heated is made of a corrosion-resistant metal tube, and heating electrodes 16 are arranged at both ends, and the heating electrodes 16 are connected to the electric heating driver 11, which can be directly heated by a large current. The condensation collecting tube 6 which can ...

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Abstract

A quantitative concentration and enrichment sample injecting device and method of a proton transfer reaction ion source comprises a collection / sample injecting six-way valve, a semiconductor refrigerator, an electric heating driver, a gas extracting meter, a gas extracting pump and a central controller. A capturing pipe supportive of direct electric heating and condensation is arranged in a vacuumrefrigerating cavity of the semiconductor refrigerator and connected with a heating electrode and the electric heating driver, six ports of the collection / sample injecting six-way valve are a zero gas port, a PTR sample injecting port, a sample injecting end port, a sampling port, a capturing gas extracting pump port and a sample ejecting end port, and the gas extracting pump is connected with ametering device. The device can realize switching between two working states like collection / sample injecting and switching of condensing capture and heating analysis. Forward sampling and reverse sample injecting are realized in a same system according to gas flow direction, so that diffusion is reduced, concentration of samples after analysis is increased, and sensitivity is improved by 2-4 orders of magnitude.

Description

technical field [0001] The invention relates to a quantitative enrichment and concentration device for a proton transfer reaction mass spectrometry (PTR-MS) sample inlet, in particular to a quantitative enrichment collection / sampling device for collecting extremely low-concentration volatile organic samples in gas. Background technique [0002] Proton Transfer Reaction Mass Spectrometry (PTR-MS) is a sharp tool for rapid analysis of gaseous samples. It can obtain the analysis results of the content and properties of the tested sample in seconds. It is widely used in environmental monitoring, clinical diagnosis, forensic drugs, explosives Security inspection, chemical defense and aerospace and other fields. With the continuous development of application requirements, higher requirements are put forward for instruments, especially for sensitivity. Only with higher sensitivity can more accurate quantitative and qualitative results be achieved. [0003] At present, the instrume...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J49/04H01J49/00G01N1/40
Inventor 顾好粮刘更涛王学宝
Owner BEIJING SANXIONG SCI & TECH CO
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