期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 412, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2021.125307
关键词
Magnetic porous organic framework; Organic micropollutants; Phenylurea herbicides; Magnetic solid-phase extraction; High performance liquid chromatography
资金
- National Natural Science Foundation of China [32072295, 32072296, 31671930, 31571925, 31471643]
- Natural Science Foundation of Hebei Province [B2020204001, C2020204020, C2020204136, B2017204025, C2018204076]
- Food Processing Discipline Group of Hebei Agricultural University [202010]
A novel magnetic porous organic framework (M-Qu-POF) was synthesized for the effective adsorption of organic micropollutants in environmental water and food samples, demonstrating high adsorption capacity for phenylurea herbicides (PUHs) pollutants. The adsorption mechanism involving hydrogen bonds interaction, ?-? interactions and electrostatic interactions was confirmed by theory calculation. The material showed promising application prospects for the detection of other organic micropollutants in environmental samples.
Organic micropollutants have been extensively detected in environmental waters, posing severe hazards to organisms and humans. Effective detection of micropollutants in environmental water and food samples is of significant importance. Herein, a novel magnetic porous organic framework (labeled as M-Qu-POF) was synthesized using natural quercetin as building units via a facile azo-coupling reaction for the first time. Featuring with good magnetism, intrinsic porosity, high surface area and hydrophilic-lipophilic (amphiphilic) structure, the M-Qu-POF displayed high adsorption capacity for phenylurea herbicides (PUHs) pollutants. The adsorption mechanism was investigated by theory calculation, confirming that the hydrogen bonds interaction, ?-? interactions and electrostatic interactions play an important role in the adsorption. With the M-Qu-POF as adsorbent, a magnetic solid phase extraction-high performance liquid chromatography method was first established for simultaneous enrichment and detection of six PUHs in environmental water, tea drink and cucumber samples. Under the optimized experimental conditions, good linear range, low detection limits and high enrichment factors were obtained. The method was successfully applied for determination of PUHs in environmental water, tea drink and cucumber samples with satisfactory recoveries (80.0?118%). The result demonstrates that the M-Qu-POF material has a good application prospect in the detection of other organic micropollutants.
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