Journal
MICROCHIMICA ACTA
Volume 185, Issue 1, Pages -Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-017-2542-3
Keywords
Benzoylurea insecticides; Phenylurea herbicides; Phenols; Porphyrin based porous organic polymers; High performance liquid chromatography; Magnetic adsorbent; Magnetic solid-phase extraction; Cucumber; Tomato
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Funding
- National Natural Science Foundation of China [31471643, 31571925, 31671930]
- Hebei Double First Class Discipline Construction Foundation for the Discipline of Food Science and Engineering of Hebei Agricultural University [2016SPGCA18]
- Natural Science Foundation of Hebei Provinces [B2016204136, B2016204146, B2017204025]
- Scientific and Technological Research Foundation of the Department of Education of Hebei Province [ZD2016085]
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Porphyrin-based porous organic polymers (P-POPs) are amorphous polymers linked by strong covalent bonds between the porphyrin subunits that act as building blocks. The authors describe a magnetic P-POP that possesses high surface area, a highly porous structure, and strong magnetism. The MP-POP was employed as a magnetic sorbent for the extraction of benzoylurea insecticides from cucumber and tomato samples prior to their determination by HPLC. The sorbent has a typical sorption capacity of 1.90-2.00 mg.g(-1). The method exhibits a good linear range (0.8-160 ng.g(-1)), low limits of detection (0.08-0.2 ng.g(-1)), and high method recoveries (81.8-103.5%) for cucumber and tomato samples. The MP-POP has different adsorption capabilities for the benzoylurea insecticides, phenylurea herbicides and phenols compounds, and the adsorption mechanism is found to be based on p-stacking, hydrogen-bonding, and hydrophobic interactions.
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