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Preparation and application of hydrophobic porous organic polymer material

A polymer and hydrophobic technology, applied in the field of detection of polycyclic aromatic hydrocarbons in food, can solve the problems of complex high-throughput analysis, low recovery rate of treatment, low sensitivity, etc., achieve good physical and chemical stability, improve detection sensitivity, The effect of high content

Inactive Publication Date: 2018-11-30
吴慈
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is aimed at the low recovery rate and low sensitivity of the current PAHs trace analysis samples of aquatic products. The present invention aims to provide a hydrophobic porous organic polymer material rich in hydrophobic benzene base structure; the second purpose of the present invention is to provide a simple and easy-to-operate method for preparing porous organic polymer materials; the third purpose of the present invention is to use hydrophobic porous organic polymer materials for the rapid removal of trace polycyclic aromatic hydrocarbons in aquatic product systems Enrichment for high-sensitivity, high-throughput analysis of trace PAHs in complex food systems

Method used

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  • Preparation and application of hydrophobic porous organic polymer material
  • Preparation and application of hydrophobic porous organic polymer material
  • Preparation and application of hydrophobic porous organic polymer material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1 Preparation of material A

[0026] In a 25mL round-bottomed single-neck flask, add 1.84g toluene, 3.04g dimethoxymethane, and 6.5g FeCl 3 As a catalyst for the polymerization reaction, 20 mL of 1,2-dichloroethane was added as a solvent, and heated to 80° C. under vigorous stirring to uniformly polymerize toluene and dimethoxymethane. The polymerization time was 24 hours. The obtained solid is subjected to Soxhlet extraction with methanol as a solvent, filtered, and dried at 80° C. to obtain the hydrophobic porous organic polymer material A.

Embodiment 2

[0027] Example 2 Preparation of material B

[0028] In a 25mL round-bottomed single-neck flask, add 2.40g 1,3,5-triphenylbenzene, 3.04g dimethoxymethane, and 6.5g FeCl 3 As a catalyst for the polymerization reaction, add 20mL of 1,2-dichloroethane as a solvent, and under vigorous stirring, heat to 80°C to uniformly polymerize 1,3,5-triphenylbenzene and dimethoxymethane. The polymerization time is 24h. The obtained solid is subjected to Soxhlet extraction with methanol as a solvent, filtered, and dried at 80° C. to obtain the hydrophobic porous organic polymer material B.

Embodiment 3

[0029] Example 3 Preparation of material C

[0030] In a 25mL round bottom single-necked flask, add 1.20g 1,3,5-triphenylbenzene, 0.92g toluene, 3.04g dimethoxymethane, and 6.5g FeCl 3 As a catalyst for the polymerization reaction, add 20mL of 1,2-dichloroethane as a solvent, and under vigorous stirring, heat to 80°C to make 1,3,5-triphenylbenzene, toluene and dimethoxymethane uniform Polymerization, the polymerization time is 24h. The obtained solid is subjected to Soxhlet extraction with methanol as a solvent, filtered, and dried at 80° C. to obtain the hydrophobic porous organic polymer material C.

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Abstract

This invention relates to the field of detection of polycyclic aromatic hydrocarbons in food. The invention discloses a hydrophobic porous organic polymer solid-phase extraction material and the application of the same to the analysis of the persistent pollutant polycyclic aromatic hydrocarbons in food. The material is rich in hydrophobic benzene ring functional groups and mesoporous and microporous structures, has a large specific surface area, improves the enrichment efficiency of sample pretreatment in analysis and detection of polycyclic aromatic hydrocarbons in food and reduces matrix interference in detection of a target object. Compared with traditional solid-phase extraction materials, the material of the invention has the following advantages: the material has good physical and chemical stability; the functional groups are embedded in the skeleton of the material, and are high in content, stable and not prone to loss; and the material has long service life and can be repeatedly used.

Description

Technical field [0001] The invention relates to the detection field of polycyclic aromatic hydrocarbons in food, in particular to a hydrophobic porous organic polymer adsorbent and its use in the detection of persistent pollutant polycyclic aromatic hydrocarbons in food. Background technique [0002] At present, the pretreatment techniques commonly used in the analysis and detection of polycyclic aromatic hydrocarbons in aquatic products mainly include Soxhlet extraction, accelerated solvent extraction, microwave assisted extraction, liquid-liquid distribution, column chromatography (Florisil silica gel, diatomaceous earth and alumina column). Chromatography) and solid phase extraction techniques. Among them, solvent extraction and column chromatography purification technology are the most commonly used methods in the national standard. Singh et al. (2014) used dichloromethane-acetone ultrasonic extraction, followed by Soxhlet extraction and a pretreatment method of silica gel c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/02B01J20/26B01J20/30G01N33/02
CPCB01J20/262C08G61/025C08G2261/124C08G2261/228C08G2261/312C08G2261/3326C08G2261/352G01N33/02
Inventor 吴慈宁兴爽陈溪齐欣
Owner 吴慈
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