Hydrophilic magnetic resin with high specific area, preparation method therefor and application method thereof for rapidly extracting phthalates in water body

US10010862B2 · kind B2 · utility

Assignees

• Nanjing University · CN
• NANJING UNIVERSITY & YANCHENG ACADEMY OF ENVIRONMENTAL PROTECTION TECHNOLOGY AND ENGINEERING · CN

Inventors

• Qing Zhou · Tangxia, CN
• Mancheng Zhang · Nanjing, CN
• Aimin Li · Nanjing, CN
• Chendong Shuang · Nanjing, CN
• Mengqiao Wang · Nanjing, CN
• Wei Wang · Beijing, CN
• Congjian Huang · Nanjing, CN
• Jingyi Jiang · Yancheng, CN
• Haibo Li · Xiangtan City, CN

Key dates

• Filing date: Aug 21, 2014
• Grant date: Jul 3, 2018
• Expiry date: Mar 20, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F2101/32
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

Implementations herein relate to a method for extraction of phthalates using hydrophilic magnetic resins with high specific surface areas. The implementations relate to a technical field of preparation of resins for fast enrichment and separation of trace organics in water. By adding magnetic particles, precursor resins may be prepared using divinylbenzene, vinyl benzoate and glycidyl methacrylate copolymerization ester. After the cross-linking reaction, surface areas of the resins are increased and hydrolysis of the ester group in alkaline solution may be implemented to obtain high specific surface magnetic resins rich in hydroxyl groups. The resins have higher adsorptive capacity and selectivity to adsorb phthalates in water samples. Rapid extraction may be implemented using magnetic solid phase extraction rod to achieve enrichment and separation of phthalates in a large amount of water samples.