文献类型：期刊文献

英文题名：Urea-based magnetic porous organic frameworks as novel adsorbent for the enrichment of phenylurea herbicides in foods

作者：Li, Jinhua[1,2,3];Xu, Xiuli[1,3];Zhang, Feng[1,3];Guo, Wei[1,3];Wang, Xiujuan[1,3];Xie, Yun[1,3];Zhang, Feifang[2]

机构：[1]Chinese Acad Inspection & Quarantine, Inst Food Safety, Beijing 100176, Peoples R China;[2]East China Univ Sci & Technol, Sch Pharm, Shanghai 200237, Peoples R China;[3]Key Lab Food Qual & Safety State Market Regulat, Beijing 100176, Peoples R China

年份：2023

卷号：425

外文期刊名：FOOD CHEMISTRY

收录：;EI(收录号：20232314185308);WOS:【SCI-EXPANDED(收录号:WOS:001011217800001)】；

基金：This research was supported by the Basic Research Fund for Central Public Interest Institutes (2022JK02) .

语种：英文

外文关键词：Urea-functionalized magnetic porous organic; frameworks; Phenylurea herbicides; Magnetic solid -phase extraction; HPLC-MS; MS; Food samples

摘要：A novel urea-based magnetic porous organic frameworks Fe3O4@UPOFs (ETTA-PPDI) was synthesized by a simple polymerization reaction under mild conditions. The adsorbent displayed desirable adsorption perfor-mance for phenylurea herbicides (PUHs) with optimized adsorption time of only 4 min. The adsorption capacities of the adsorbent for PUHs ranged from 47.30 to 111.93 mg g-1. A magnetic solid-phase extraction based on Fe3O4@UPOFs combined with high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/ MS) was established for the efficient determination of six PUHs in food samples (wheat, edible oil and cucum-ber), with determination coefficient (R2) >= 0.9972. The LODs of the method were in the range of 0.003-0.07 mu g kg- 1 and recoveries ranged from 82.00 to 112.53%. The relative standard deviations were lower than 6.7%. The newly prepared adsorbent displayed great application prospects for the efficient enrichment of trace phenylurea herbicides in complex food matrices.