Enrichment and rapid determining method for heteroatom-containing organic compounds in soluble lignite component

A technology for the rapid determination of organic compounds, applied in the direction of measuring devices, analysis materials, preparation of test samples, etc., can solve the problems of undetectable analysis and low concentration

Inactive Publication Date: 2018-11-06
CHINA UNIV OF MINING & TECH
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that part of heteroatom-containing organic compounds in lignite soluble components cannot be detected and analyzed due to low concentration, and to provide a rapid Efficient enrichment method to obtain more comprehensive and accurate lignite structure and composition information

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  • Enrichment and rapid determining method for heteroatom-containing organic compounds in soluble lignite component
  • Enrichment and rapid determining method for heteroatom-containing organic compounds in soluble lignite component
  • Enrichment and rapid determining method for heteroatom-containing organic compounds in soluble lignite component

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Embodiment 1

[0021] A method for rapid enrichment and determination of heteroatom-containing organic compounds in lignite soluble components, specifically comprising the following steps:

[0022] Step 1: Use a tetrafluoroethylene filter membrane to filter the residual solid particles in the methanol-soluble components of Inner Mongolia Dongming lignite, take 1 ml of the sample and place it in a transparent glass bottle with a capacity of 2 ml, seal it and let it stand at room temperature for 10 minute.

[0023] Step 2: Select a self-made polypyrrole film as the solid-phase microextraction coating, and age for 15 minutes between the direct real-time analysis ion source and the injection port before use. The ion source parameters during the aging process are: carrier gas nitrogen; carrier gas flow rate 3 L / min; carrier gas pressure 5 MPa; carrier gas temperature 200 degrees Celsius.

[0024] Step 3: Insert the aging-treated polypyrrole coating into a sample bottle to ensure full contact bet...

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Abstract

An enrichment and rapid determining method for heteroatom-containing organic compounds in a soluble lignite component comprises the following steps: step 1: filtering residual solid particles in the soluble lignite component by using a tetrafluoroethylene filter film, placing a supernatant sample obtained after filtration into a sample bottle, sealing the bottle and allowing the bottle to stand still at room temperature; step 2: selecting a self-made polypyrrole film as a solid phase micro-extraction coating, and aging the coating between a direct real-time analysis ion source and a sample inlet before use; step 3: inserting the aged polypyrrole coating into the transparent glass bottle where the sample is located while ensuring that the coating is in sufficient contact with the sample, and extracting at room temperature; step 4: placing a completely enriched coating between the direct real-time analysis ion source and the electrostatic field orbitrap mass spectrometer sample inlet fordetection; step 5: placing a solid phase micro-extraction coating obtained after the detection into methanol for washing, and then drying. According to the method, the solid phase micro-extraction technology is applied to the enrichment and rapid determining of the heteroatom-containing organic compounds in the soluble lignite component.

Description

technical field [0001] The invention relates to rapid enrichment and detection and analysis technology of lignite organic soluble components, in particular to a rapid detection method for components containing heteroatoms (mainly oxygen and nitrogen). Background technique [0002] my country is relatively rich in lignite resources, and the proven lignite reserves are about 130 billion tons, accounting for 13% of the national coal reserves. In my country, coal is mainly used for thermal power generation. However, as a low-rank coal, lignite has high water content, low calorific value, high ash content, and poor thermal stability, making it unfavorable for burning as a fuel. At present, the conversion process of coal to coal-based liquid based on coal liquefaction technology is a means to solve the problems of oil shortage and low utilization rate of lignite. The analysis of the structure and composition of different components in coal-based liquid provides a theoretical bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G01N1/28G01N1/34G01N1/40
CPCG01N1/28G01N1/34G01N1/40G01N27/62
Inventor 樊星王楚凡魏贤勇赵云鹏王瑞玉董雪明宗志敏
Owner CHINA UNIV OF MINING & TECH
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