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A kind of extraction head and its preparation method and application

An extraction head and capillary technology, applied in the field of extraction, can solve the problems of high cost, easy breakage, and high price of commercial extraction heads

Active Publication Date: 2019-01-04
HENAN INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Commercialized SPME extraction heads are often coated. We know that the thickness and type of coating largely determine its sensitivity and selectivity. Especially after the extraction head has been used many times, it is easy to break. We know that commercialized The extraction head is extremely expensive, and has a short service life and high cost

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  • A kind of extraction head and its preparation method and application
  • A kind of extraction head and its preparation method and application
  • A kind of extraction head and its preparation method and application

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] 1. Instruments and reagents

[0042] Agilent 1290 ultra-high performance liquid chromatography (Agilent, USA); chromatographic column (2.1*50mm, 1.8μm); 4mL extraction bottle, 200μL desorption tube, micro-magnetic rotor (Supelco, USA); quartz capillary (diameter 500μm, West China Medical University Instrument Factory); Quanta 200 Scanning Electron Microscope (FEI, Hillsboro, Oregon, USA); Magnetic Stirrer (Model: TWCL-D, Henan Aibot Technology Development Co., Ltd.); Co., Ltd.); solvent filter (1000mL, Tianjin Jinteng Co., Ltd.); ultrasonic cleaner (KQ5200DE, Kunshan Ultrasonic Instrument Co., Ltd.); stainless steel wire (300 μm, Zhongjia Wire Mesh Products Factory), microporous membrane (0.22 μm, Tianjin Jinteng Co., Ltd.).

[0043] Choline chloride (analytical pure, 98%, Aladdin Chemical Reagent Co., Ltd.); Ethylene glycol (analytical pure, Tianjin BASF Ch...

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Abstract

The invention discloses an extraction head, its preparation method and application. The extraction head of the invention is continuous and uniform, has certain toughness and elasticity, and is not easy to break. It can be reused. When the protruding part is damaged or cannot be used for other reasons, it can be cut off, and then the reserved polymer in the capillary can be pushed out. According to the results of electron microscopy, it can be found that the prepared extraction head has smooth surface, uniform structure, complete polymerization in longitudinal section and cross section, good external surface and uniform pore structure, and can adsorb polycyclic aromatic hydrocarbons for aggregation and enrichment. After being enlarged to different degrees, its structure remains stable, there is no shedding and aggregation, and the overall density is relatively high.

Description

technical field [0001] The invention relates to extraction technology, in particular to an extraction head and its preparation method and application. Background technique [0002] Extraction, also known as solvent extraction or liquid-liquid extraction, also known as extraction, is a unit operation that uses the different solubility of the components in the system to separate the mixture. That is, it is a method of transferring a solute substance from one solvent to another by using the difference in solubility or partition coefficient of the substance in two mutually immiscible (or slightly soluble) solvents. Widely used in chemical, metallurgical, food and other industries, generally used in petroleum refining industry. In addition, the operation of separating two immiscible liquids after extraction is called liquid separation. [0003] Solid-liquid extraction, also called leaching, uses solvents to separate components in solid mixtures, such as leaching sugars in beets...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/28B01J20/26B01D15/08C08F222/14C08F220/18C08F2/06C07C15/24C07C15/30C07C15/14C07C7/10G01N1/28
CPCB01D15/08B01J20/26B01J20/282B01J2220/86C07C7/10C08F2/06C08F222/102C08F222/14G01N1/28C07C15/24C07C15/30C07C15/14C08F220/1804
Inventor 陈娜张裕平郝海玲张毅军涂剑秋
Owner HENAN INST OF SCI & TECH