Micro-extraction method based on phase transition properties of temperature-sensitive polymers

A temperature-sensitive polymer and polymer technology, applied in the field of micro-extraction, can solve the problem of low extraction rate and achieve high extraction rate and simple operation

Inactive Publication Date: 2018-07-31
NORTHWEST UNIV
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a micro-extraction method based on the phase transitio

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Micro-extraction method based on phase transition properties of temperature-sensitive polymers
  • Micro-extraction method based on phase transition properties of temperature-sensitive polymers
  • Micro-extraction method based on phase transition properties of temperature-sensitive polymers

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example

[0020] A micro-extraction method based on the phase transition properties of temperature-sensitive polymers includes the following steps:

[0021] 1. Add 20mL of water sample containing dibutyl phthalate and 10mg of β-CD-PNIPAM to the colorimetric tube to form a mixed aqueous solution; the concentration of dibutyl phthalate in the water sample is 1ug / mL , The concentration of β-CD-PNIPAM in the mixed aqueous solution is greater than the concentration of dibutyl phthalate;

[0022] 2. Put the colorimetric tube in a 40℃ water bath. Because β-CD-PNIPAM is a temperature-sensitive polymer, the solution changes from clear to turbid after heating. Add 2g sodium sulfate to make the turbid liquid form a solid phase substance and liquid Two-phase, centrifugation to collect solid phase material, the solid phase material is the solid phase material formed after the polymer β-CD-PNIPAM adsorbs the organic pollutant dibutyl phthalate.

[0023] 3. Add 200 uL of ethyl acetate to the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a micro-extraction method based on phase transition properties of temperature-sensitive polymers. The method comprises the steps of sequentially adding an aqueous solution containing organic pollutant and the temperature-sensitive polymers to a comparison tube; placing the comparison tube in a water bath pot at 40 DEG C, after the aqueous solution is changed from clarification to turbidity, adding inorganic salt, and centrifuging and separating solid phase materials; adding a small amount of organic solvent to the collected solid phase materials for extraction. The micro-extraction method based on the phase transition properties of the temperature-sensitive polymers can extract the organic pollutant with a small amount of organic solvent, has high extraction rate, and is simple and quick to operate.

Description

technical field [0001] The invention relates to a micro-extraction method, in particular to a micro-extraction method based on the phase transition properties of temperature-sensitive polymers. Background technique [0002] With the rapid development of modern industrial and agricultural production, associated organic pollutants such as pesticides, chemical fertilizers and industrial wastes (such as PAHs, PCBs, aromatic nitro compounds, etc.) continue to enter the environment, pollute the environment, destroy the ecological balance, and also pass through the food chain Ways to endanger human health. In view of its harmfulness, researchers have carried out a lot of detection and analysis research work on it. Since the content of these organic pollutants in the environment is very low, they need to be analyzed after pre-treatment and enrichment. The commonly used pretreatment methods are liquid-liquid microextraction and solid-phase microextraction. [0003] Single-drop mic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01D11/04
CPCB01D11/04
Inventor 赵景婵卢悦坤陈晓梅辛拉弟郭治安刘玉锋
Owner NORTHWEST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap