Application of solid phase microextraction in content analysis of naphthalene in Corex furnace gas

An extraction method, gas technology, applied in the application field of solid-phase microextraction in the analysis of Nai content, to achieve the effect of wide application prospects, shortened analysis time, and simple operation

Inactive Publication Date: 2012-10-10
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Application of solid phase microextraction in content analysis of naphthalene in Corex furnace gas
  • Application of solid phase microextraction in content analysis of naphthalene in Corex furnace gas
  • Application of solid phase microextraction in content analysis of naphthalene in Corex furnace gas

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Embodiment Construction

[0023] The invention proposes the application of the solid-phase microextraction method in the analysis of naphthalene content in Corex furnace gas.

[0024] In the present invention, the extraction head of the solid-phase extraction capillary fiber is inserted into the sampling bottle to extract the naphthalene in the concentrated gas, and then the fiber is injected into the gas phase analyzer for analysis. figure 1 is the analysis device, wherein 1 is a telescopic rod; 2 is a handle; 3 is a spring; 4 is a stainless steel needle; 5 is a sealing plug with a silicone membrane; Air port; 10 is an air outlet.

[0025] Specific steps are as follows:

[0026] Instruments and operating conditions

[0027] Instrument: solid-phase microextraction device: solid-phase microextraction manual injection device (Supelco Company), 100 μm polydimethylsiloxane (PDMS) extraction head (Supelco Company), heat-collecting constant temperature magnetic stirrer (Corning, PC -420d), self-made 40ml ...

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Abstract

The invention relates to solid phase microextraction, particularly an application of the solid phase microextraction in content analysis of naphthalene in Corex furnace gas. The invention is characterized by inserting an extraction head of solid phase extraction capillary fibers in a sampling bottle, extracting naphthalene in the concentrated gas, and then carrying out sample injection analysis on the fibers in a gas phase gas phase analyzer. According to the invention, the acquisition process of naphthalene in gas is greatly simplified; by adopting the solid phase microextraction technique, the sensitivity of the analysis is greatly raised; the advantages of simpleness, fast analysis, good correctness, no toxicological harmless, no pollution and the like are achieved; and the process can be prevented from being influenced by water vapour and other impurities in gas simultaneously.

Description

technical field [0001] The invention relates to a solid phase microextraction method, in particular to the application of the solid phase microextraction method in the analysis of nei content. Background technique [0002] In metallurgical production, a certain amount of naphthalene is often contained in blast furnace gas, a by-product of coal coking, especially in Corex furnace gas produced by Corex process. When the temperature is low in cold seasons, naphthalene will condense into a solid and adhere to the inner wall of the pipeline. Or in the naphthalene removal equipment, the gas flow rate will be reduced, which will lead to blockage of pipelines and equipment in severe cases, affecting the normal operation of production. In daily production and technological transformation, the detection of naphthalene content in gas is very important. [0003] At present, the determination methods of naphthalene content in gas include "Gas Chromatography Method for Determination of N...

Claims

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Application Information

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IPC IPC(8): G01N30/06
Inventor 魏华黄晓杨四川
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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