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Tetraazacalix [2] arene [2] triazine bonded silica gel solid phase extraction material, preparation method and application thereof

A technology of solid-phase extraction materials and bonded silica gel, which is applied in chemical instruments and methods, extraction water/sewage treatment, and other chemical processes, and can solve problems such as single force, inability to enrich multiple types of samples with specific properties, etc. , to achieve the effect of low cost, good promotion and application prospects, and high bonding capacity

Inactive Publication Date: 2013-04-03
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Bonded silica gel and polymer organic polymer SPE materials have a single force (such as PS-DVB, C18, C8 only retains the solute through hydrophobic interaction, and bonded amino silica gel only relies on weak anion exchange or polar adsorption to achieve retention. ) but cannot meet the requirements of enrichment of multiple types and specific samples

Method used

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  • Tetraazacalix [2] arene [2] triazine bonded silica gel solid phase extraction material, preparation method and application thereof
  • Tetraazacalix [2] arene [2] triazine bonded silica gel solid phase extraction material, preparation method and application thereof
  • Tetraazacalix [2] arene [2] triazine bonded silica gel solid phase extraction material, preparation method and application thereof

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Embodiment 1

[0019] The preparation method of the tetraazacalix[2]arene[2]triazine-bonded silica gel solid-phase extraction material of the present invention is realized through the following steps:

[0020] 1. Preparation of activated silica gel: Weigh a certain amount of porous silica gel and immerse in HCl / H 2 In O(1:3, v / v), the ratio of silica gel weight (g) to hydrochloric acid aqueous solution volume (ml) is 1:15-1:20. Soak for 12 h, reflux for 24-36 h under magnetic stirring to remove metal ions, then filter with a sand core funnel, rinse repeatedly with double distilled water until neutral, finally wash twice with acetone, and dry at 160°C for 10 h By removing the surface solvent and water, the activated silica gel with evenly distributed hydroxyl groups on the surface can be obtained.

[0021] 2. Preparation of aminopropyl silica gel: in the presence of N 2 Introductory tube, condenser tube, CaCl 2 Add activated silica gel, 3-aminopropyltriethoxysilane, and anhydrous toluene...

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Abstract

The invention discloses a tetraazacalix [2] arene [2] triazine bonded silica gel solid phase extraction material, a preparation method and application thereof. The tetraazacalix [2] arene [2] triazine bonded silica gel solid phase extraction material has the following structural formula described in the specification. The preparation method comprises the steps of: firstly modifying silica gel by using aminopropyltriethoxysilane to prepare amino silica gel; and then reacting the amino silica gel react with tetraazacalix [2] arene [2] triazine to prepare the tetraazacalix [2] arene [2] triazine bonded silica gel solid phase extraction material. The tetraazacalix [2] arene [2] triazine bonded silica gel solid phase extraction material synthesized by adopting the preparation method has the characteristics of high bonding quantity, stable bonding layer, wide application range and the like. The filler can be used for simultaneously extracting organic matters and divalent inorganic copper ions from water, and has a recycling rate of polycyclic aromatic hydrocarbon and Cu<2+> being 90 percent and enriching multiple reaching 500 times. The tetraazacalix [2] arene [2] triazine bonded silica gel solid phase extraction material can be repeatedly used for multiple times, and has a good popularization and application prospect.

Description

technical field [0001] The present invention relates to a solid phase extraction material, in particular to a tetraazacalix [2] arene [2] triazine bonded silica gel solid phase extraction material with a high bonding amount and a stable bonding layer; Preparation methods and applications. Background technique [0002] Rapid separation and accurate determination of trace components in complex systems is an important and arduous task for analytical chemists today. Sample pretreatment is the bottleneck of the entire analysis process and one of the difficulties and hot issues in analytical chemistry research. As the sample matrix becomes more and more complex and the analyte content becomes lower and lower, the development of efficient, simple and green sample preparation and pretreatment technology has always been an important research topic. Solid-phase extraction (Solid-Phase Extraction, SPE), which combines liquid-solid extraction and column liquid chromatography technology...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/286B01J20/30C02F1/26
Inventor 张书胜赵文杰常红蒋琼邓志芬卢静
Owner ZHENGZHOU UNIV
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