Ultrasonic assistant liquid-liquid spray extraction method

An ultrasonic and extraction technology, applied in liquid solution solvent extraction and other directions, can solve the problems of large amount of organic solvent, difficulty in automation, and long liquid-liquid extraction time.

Inactive Publication Date: 2009-10-14
YANBIAN UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art, such as long time-consuming liquid-liquid extraction, large amount of organic solvent, and difficulty in realizing automation, and to provide a ki...

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  • Ultrasonic assistant liquid-liquid spray extraction method

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Embodiment Construction

[0011] An ultrasonic-assisted liquid-liquid spray extraction method, using a pump and a nozzle to introduce a liquid sample into an extraction container filled with an organic solvent in the form of atomization through a pressurized method. The pressure is controlled by using a high-pressure bottle or a pressure regulator in a closed system. According to the liquid sample, an appropriate organic solvent is selected and placed in the extractor. At the same time, the extraction container is immersed in the ultrasonic generator. Under the action of ultrasonic waves, the liquid The sample and the organic solvent form a turbulent flow, so that the liquid sample contacts the extraction organic solvent in the form of smaller droplets, and the target compound in the sample is quickly transferred to the organic phase for rapid separation and extraction, and the excess water can be discharged from the water outlet. The organic solvent extract can be taken out from the organic solvent out...

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Abstract

The invention discloses an ultrasonic assistant liquid-liquid spray extraction method. A liquid sample is pressed into an extraction container containing organic solvent in an atomization mode, meanwhile, the extraction container is soaked into an ultrasonic generator, so that the liquid sample and the organic solvent form turbulent flow, then the liquid sample contacts with the organic solvent in a smaller drop form, and the target compound in the sample is rapidly transferred into an organic phase to achieve fast extraction separation. Micromolecules in the atomized liquid sample are beneficial to improving the contact area with the organic solvent to quickly achieve liquid-liquid partition equilibrium; and the assistance of the ultrasonic generator enables the sample in the smaller drop form to contact with extracting agent, thereby the extraction efficiency is improved. The invention can separate and collect the liquid sample and has the advantages of time and labor saving, small dosage of solvent, easy operation, being applicable to large-capacity sample analysis, easy realization of semi-automation, and the like.

Description

technical field [0001] The invention relates to a method for separating and enriching target substances in liquid samples, in particular to an ultrasonic-assisted liquid-liquid spray extraction method suitable for rapid pretreatment of large-capacity water samples. technical background [0002] The traditional extraction method for liquid samples is liquid-liquid extraction, which belongs to solvent extraction. However, the traditional liquid-liquid extraction has limitations such as large amount of solvent used, secondary pollution, time-consuming and labor-intensive, etc., especially liquid-liquid extraction is not suitable for pretreatment of large-capacity water samples. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the prior art, such as long time-consuming liquid-liquid extraction, large amount of organic solvent, and difficulty in realizing automation, and to provide a kind of solvent with less amount of s...

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Application Information

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IPC IPC(8): B01D11/04
Inventor 李东浩何苗李俊林
Owner YANBIAN UNIV
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