Super-miniature reactor for GC-MS headspace sampling qualitative analysis

A headspace sampling and qualitative analysis technology, which is applied in the direction of analyzing materials, instruments, scientific instruments, etc., can solve problems such as large analysis errors, poor air tightness, and highly toxic gas leakage, and achieve reduced reaction levels, simple structure, and high sensitivity. high effect

Inactive Publication Date: 2016-10-26
SHANGHAI RES INST OF CHEM IND +1
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  • Abstract
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  • Claims
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Problems solved by technology

Obviously, this method not only has cumbersome analysis steps and large analysis errors, but also pollutes the laboratory environment due to the leakage of toxic and highly toxic gases due to the poor airtightness of the experimental equipment, and poses a threat to the health of the experimenters.

Method used

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  • Super-miniature reactor for GC-MS headspace sampling qualitative analysis

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Embodiment

[0030] A kind of ultramicroreactor for qualitative analysis of GC-MS headspace sampling, its structure is as follows figure 1 As shown, it includes: a headspace bottle 8 for GC-MS, which also has a headspace bottle cap 9 for sealing on the headspace bottle 8, placed in the headspace bottle 8, and a reagent container 1 for containing reagents. The sample floating raft 2 is arranged in the reagent container 1, and the floating raft 2 is divided into upper and lower layers, the upper layer contains the sample, and the lower layer is sealed with an iron core 3. The powerful magnet 4 located at the bottom of the headspace bottle 8 acts on the iron core in the floating raft 2, which can cause the floating raft 2 to sink, so that the reagent enters the floating raft 2 and reacts with the sample. At the same time, the sealed iron core 3 also The center of gravity of the floating raft 2 can be moved downward to avoid overturning when the device moves. A pressure indicator tube 6 is al...

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Abstract

The invention relates to a super-miniature reactor for GC-MS headspace sampling qualitative analysis. The super-miniature reactor comprises a GC-MS headspace bottle, a reagent container, a floating raft, a powerful magnet and a pressure indication tube, wherein the reagent container is arranged in the headspace bottle and is used for containing reagents, the floating raft is used for containing samples and is arranged in the reagent container, an iron core is arranged in the floating raft, the powerful magnet is located at the bottom of the headspace bottle, and the pressure indication tube is fixed in the reagent container. Compared with the prior art, the super-miniature reactor has the advantages that micro-samples can react with water, acid or other chemical reagents in the closed headspace bottle, and gas produced in the reaction can be directly introduced into a gas chromatograph-mass spectrometer to be analyzed.

Description

technical field [0001] The invention relates to an ultramicroreactor, in particular to an ultramicroreactor used for qualitative analysis of GC-MS headspace sampling. Background technique [0002] Gas Chromatography-Mass Spectrometer (Gas Chromatography-Mass Spectrometer), referred to as GC-MS. The characteristic of gas chromatography-mass spectrometry is that the chromatograph has a strong ability to separate mixtures, but its ability to characterize compounds is poor, while mass spectrometry itself has no ability to separate mixtures, but it can determine the relative molecular mass and chemical structure of compounds. It is an excellent qualitative tool. Therefore, gas chromatography-mass spectrometry has played an increasingly important role in many fields of chemical analysis, detection and research, especially in the routine monitoring of many organic compounds as an essential tool. [0003] The working principle of gas chromatography is: the mobile phase of gas chro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/16G01N30/02
CPCG01N30/16G01N30/02G01N2030/025
Inventor 章明洪薛晓康张小沁储德韧林建周庆云段路路丁卯
Owner SHANGHAI RES INST OF CHEM IND
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