Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of nitrosamine sterilization byproduct molecularly imprinted polymer and application

A technology of disinfection by-products and nitrosamines, applied in chemical instruments and methods, water pollutants, water/sludge/sewage treatment, etc. Application value, lower MS maintenance cost, high selectivity and effect of extraction efficiency

Active Publication Date: 2018-04-03
NANJING UNIV
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many pathogenic microorganisms in the source water. Drinking it directly can lead to the outbreak and prevalence of diseases such as typhoid fever and cholera. To ensure the safety of drinking water, disinfection of drinking water can kill pathogens in the water, but the use of disinfectants also produces many types Disinfection by-products, more drinking water is disinfected with chlorine or chloramine. Among the many disinfection by-products, nitrosamine disinfection by-products are an emerging nitrogen-containing disinfection by-products. Many studies have shown that nitrogen-containing disinfection by-products The toxicity of disinfection by-products is far greater than that of carbon-containing disinfection by-products. According to the classification of the International Agency for Research on Cancer, many nitrosamines are suspected carcinogens; and the content of such substances in water is mostly at the level of ng / L. Water sample pretreatment requires a more efficient adsorbent for concentrated analysis and detection

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
  • Preparation method of nitrosamine sterilization byproduct molecularly imprinted polymer and application
  • Preparation method of nitrosamine sterilization byproduct molecularly imprinted polymer and application
  • Preparation method of nitrosamine sterilization byproduct molecularly imprinted polymer and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Pre-polymerization of template molecules and functional monomers, the steps are as follows:

[0031] Take 0.30 mmol of N,N diethyl formamide, N,N di-n-propyl formamide, N,N dibutyl formamide, 1-formyl piperidine and N,N-diphenyl formamide The template molecule was dissolved in 150mL of analytically pure acetonitrile and 90mL of pure water in an acetonitrile / water mixed solvent, and then 7.6mmol of a mixed solution of α-methacrylic acid functional monomer was added, and placed in a 500ml three-necked flask equipped with a stirrer and a thermometer; Start the stirrer, stir at room temperature for 10 minutes, and then place it in an ultrasonic machine for 10 minutes to make the template molecules fully contact with the functional monomers, and then place it in a refrigerator at 4°C in the dark for 24 hours to obtain an acetonitrile prepolymerization system.

[0032] (2) Preparation of nitrosamine molecularly imprinted polymers by precipitation polymerization, the steps...

Embodiment 2

[0038] (1) Pre-polymerization of template molecules and functional monomers, the steps are as follows:

[0039] Take 0.25 mmol of N, N diethyl formamide, N, N di-n-propyl formamide, N, N dibutyl formamide, 1-formyl piperidine and N, N-diphenyl formamide The template molecule was dissolved in 150mL of analytically pure acetonitrile and 100mL of pure water in an acetonitrile / water mixed solvent, then 7.2mmol of a mixed solution of α-methacrylic acid functional monomer was added, and placed in a 500ml three-necked flask equipped with a stirrer and a thermometer; Start the stirrer, stir at room temperature for 10 minutes, and then place it in an ultrasonic machine for 10 minutes to make the template molecules fully contact with the functional monomers, and then place it in a refrigerator at 4°C in the dark for 24 hours to obtain an acetonitrile prepolymerization system.

[0040] (2) Preparation of nitrosamine molecularly imprinted polymers by precipitation polymerization, the step...

Embodiment 3

[0046] (1) Pre-polymerization of template molecules and functional monomers, the steps are as follows:

[0047] Take 0.20 mmol of N, N diethyl formamide, N, N di-n-propyl formamide, N, N dibutyl formamide, 1-formyl piperidine and N, N-diphenyl formamide The template molecules were dissolved in 150mL analytically pure acetonitrile and 100mL pure water acetonitrile / water mixed solvent, then added 6.8mmol of α-methacrylic acid functional monomer mixed solution, placed in a 500ml three-necked flask equipped with a stirrer and a thermometer; Start the stirrer, stir at room temperature for 10 minutes, and then place it in an ultrasonic machine for 10 minutes to make the template molecules fully contact with the functional monomers, and then place it in a refrigerator at 4°C in the dark for 24 hours to obtain an acetonitrile prepolymerization system.

[0048] (2) Preparation of nitrosamine molecularly imprinted polymers by precipitation polymerization, the steps are as follows:

[0...

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 discloses a preparation method of a nitrosamine sterilization byproduct molecular marker polymer and application. The preparation method comprises the following steps: pre-polymerizing afunctional monomer by using a template molecule, enabling the obtained pre-polymer system and ethylene glycol metacrylic acid ester to react with azodiisobutyronitrile so as to obtain a high-molecular polymer, and performing physical and chemical cleaning on the high-molecular polymer, thereby finally obtaining a nitrosamine sterilization byproduct molecularly imprinted polymer. The obtained molecularly imprinted polymer is regular in morphology, five nitrosamine substances can be adsorbed simultaneously, rapid separation, enrichment and multi-residue detection on the nitrosamine substances in complex water samples are achieved, and good application prospects are met.

Description

technical field [0001] The invention belongs to the technical field of molecularly imprinted materials, and in particular relates to a preparation method and application of a molecularly imprinted polymer for detecting nitrosamine disinfection by-products in drinking water. Background technique [0002] Water is the source of life and one of the indispensable substances for human survival. The safety of drinking water is closely related to human health, social stability and economic development. There are many pathogenic microorganisms in the source water. Drinking it directly can lead to the outbreak and prevalence of diseases such as typhoid fever and cholera. To ensure the safety of drinking water, disinfection of drinking water can kill pathogens in the water, but the use of disinfectants also produces many types Disinfection by-products, more drinking water is disinfected with chlorine or chloramine. Among the many disinfection by-products, nitrosamine disinfection by-p...

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): C08F220/06C08F222/14C08J9/28B01J20/26C02F1/28C02F101/38C02F101/34
CPCC02F1/285C08F220/06C08J9/28B01J20/268C02F2101/34C02F2101/38C08J2333/02C08F222/102
Inventor 鲜啟鸣李志刚朱成章钱宗耀孙春蕾
Owner NANJING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com