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Magnetic solid‐phase extraction of benzoylurea insecticides by Fe 3 O 4 nanoparticles decorated with a hyper‐cross‐linked porous organic polymer
Author(s) -
Wang Qianqian,
Wu Juanjuan,
Hao Lin,
Wu Qiuhua,
Wang Chun,
Wang Zhi
Publication year - 2018
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201800392
Subject(s) - detection limit , extraction (chemistry) , coprecipitation , solid phase extraction , polymer , chromatography , chemistry , adsorption , analyte , magnetic nanoparticles , elution , analytical chemistry (journal) , nanoparticle , materials science , inorganic chemistry , nanotechnology , organic chemistry
A magnetic polytriphenylamine porous organic polymer was prepared through simple self‐polycondensation of triphenylamine followed by coprecipitation with Fe 2+ and Fe 3+ . 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.