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Gas phase extraction and enrichment method for liquid phase volatile material, and system thereof

A volatile substance and gas-phase technology, applied in solvent extraction, liquid degassing, separation methods, etc., can solve the problems of limiting volatile substances on-site, rapid extraction and detection, cumbersome experimental operations, and low enrichment efficiency, etc. Wide range, simplified experimental operation, and high enrichment efficiency

Active Publication Date: 2014-11-05
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the existing solid-phase or liquid-phase enrichment methods have shortcomings such as long experiment time, cumbersome experimental operations, and low enrichment efficiency, which limit the on-site and rapid extraction and detection of volatile substances.

Method used

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  • Gas phase extraction and enrichment method for liquid phase volatile material, and system thereof

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Embodiment Construction

[0013] The present invention will be further elaborated below in conjunction with the accompanying drawings and embodiments.

[0014] refer to figure 1 , a gas-phase extraction and enrichment system for liquid-phase volatile substances, consisting of a liquid-gas extraction unit A and a gas-phase compression enrichment unit B, the liquid-gas extraction unit A includes a gas-liquid exchange container 1 with an opening facing downwards and a device The first piston 2 in the gas-liquid exchange container 1 is connected to the top of the gas-liquid exchange container 1 with a working gas inlet pipe 3, an exhaust gas and waste liquid outlet pipe 5, and a liquid sample inlet pipe 7. The gas phase is compressed and enriched Unit B includes an absorption container 13 with the opening facing downward and a second piston 14 arranged in the absorption container 13. The top of the absorption container 13 is connected with a working liquid inlet pipe 16, a working liquid outlet pipe 18 and...

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Abstract

The present invention relates to a gas phase extraction and enrichment method for a liquid phase volatile material, and a system thereof. The system comprises a liquid-gas extraction unit and a gas phase compression enrichment unit, wherein the liquid-gas extraction unit adopts a specific gas as a working gas to extract a target volatile substance to a gas phase from the liquid phase so as to achieve liquid-gas phase transfer of the target volatile substance, and the gas phase compression enrichment unit adopts a special working liquid to absorb the working gas, such that a volume of the working gas containing the extracted target volatile substance is significantly reduced so as to achieve the gas phase compression enrichment of the target volatile substance. The method and the system in the present invention have good application prospects in volatile drug extraction, environment water body volatile pollutant enrichment and monitoring, and other fields.

Description

technical field [0001] The invention relates to a gas-phase extraction and enrichment method and system for liquid-phase volatile substances, and is especially suitable for analytical chemistry, environmental chemistry, food safety analysis and detection, medicinal chemistry and analysis, and the like. Background technique [0002] With the development of society and the advancement of science and technology, such a technology or equipment requirement is often encountered, how to transfer the volatile substances in the liquid phase to the gas phase, and make the volatile substances have a sufficiently high concentration in the gas phase, In order to further extract or detect volatile substances. For example: with the increasing environmental pollution, the content of volatile organic compounds harmful to human body in natural water is increasing day by day, how to accurately and quickly determine the content of these volatile compounds has attracted great attention. Usually...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D11/00B01D19/00B01D53/78
Inventor 池毓务周晨张元金陈国南
Owner FUZHOU UNIV
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