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- Title
Magnetic solid‐phase extraction of benzoylurea insecticides by Fe<sub>3</sub>O<sub>4</sub> nanoparticles decorated with a hyper‐cross‐linked porous organic polymer.
- Authors
Wang, Qianqian; Wu, Juanjuan; Hao, Lin; Wu, Qiuhua; Wang, Chun; Wang, Zhi
- Abstract
Abstract: A magnetic polytriphenylamine porous organic polymer was prepared through simple self‐polycondensation of triphenylamine followed by coprecipitation with Fe2+ and Fe3+. It was applied as a magnetic adsorbent for the extraction of six benzoylurea insecticides from tomato, cucumber, and watermelon samples before their high‐performance liquid chromatography and mass spectral detection. Under the optimized experimental conditions, the established method gave a low limit of detection ranging from 0.05 to 0.1 ng/g and a good linear response ranging from 0.2 to 40 ng/g with coefficients of determination >0.99. The method recoveries for spiked analytes at the concentrations of 3 and 15 ng/g in real samples were in the range of 87.7–106.7% with the relative standard deviations <6.4%. The results indicated that it had a good adsorption capability toward the target analytes due to the π‐stacking and hydrogen bonding interactions. The polymer material showed great potential in the efficient extraction of organic compounds from real samples with complex matrixes.
- Subjects
BENZOYLUREA; HIGH performance liquid chromatography; SOLID phase extraction; MASS spectrometry; TRIPHENYLAMINE; POLYCONDENSATION; POROUS polymers
- Publication
Journal of Separation Science, 2018, Vol 41, Issue 16, p3285
- ISSN
1615-9306
- Publication type
Article
- DOI
10.1002/jssc.201800392