Microchimica Acta

, 186:431 | Cite as

A magnetic covalent aromatic polymer as an efficient and recyclable adsorbent for phenylurea herbicides

  • Lin Hao
  • Yibo Wang
  • Chun Wang
  • Qiuhua WuEmail author
  • Zhi WangEmail author
Original Paper


A magnetic covalent aromatic polymer (Fe3O4-NH2-CAP) was synthesized by grinding a covalent aromatic polymer (CAP) and amino-functionalized magnetic nanoparticles (Fe3O4-NH2 NPs). The CAP was prepared by a Friedel-Crafts reaction between biphenyl and 1,3,5-benzenetricarbonyl trichloride. The interaction in the Fe3O4-NH2-CAP is based on hydrogen bond formation between the carbonyl groups in the CAP and the amino groups in the Fe3O4-NH2 NPs. The adsorbent inherits the advantages of the CAP and also has the superior magnetic property of the Fe3O4 NPs. The adsorbent was applied to magnetic solid-phase extraction of six phenylurea herbicides (metoxuron, monuron, chlortoluron, isoproturon, monolinuron, buturon) from soil and water samples. Following elution with 600 μL methanol, the herbicides were quantified by HPLC. The calibration plots are linear in the 1.00–100 ng g−1 herbicide concentration ranges in case of spiked soil samples, and in the 0.10–40 ng mL−1 concentration range for spiked water samples. The limits of detection range from 0.3 to 0.5 ng g−1 (soil) and from 0.01 to 0.03 ng mL−1 (water), with relative standard deviations of <8.0% and < 6.9%, respectively.

Graphical abstract

Schematic presentation for the preparation of the magnetic covalent aromatic polymer (Fe3O4-NH2-CAP) and of magnetic solid-phase extraction.


Covalent aromatic polymer Amino-functionalized iron oxide Grinding method Magnetic covalent aromatic polymer adsorbent Phenylurea herbicides 



Financial supports from the Natural Science Foundation of Hebei Agricultural University (LG201712, ZD201703), the National Natural Science Foundation of China (31471643, 31571925, 31671930), the Natural Science Foundation of Hebei Province (B2016204136, B2016204146, B2017204025), the Hebei “Double First Class Discipline” Construction Foundation for the Discipline of Food Science and Engineering of Hebei Agricultural University (2016SPGCA18) and the Scientific and Technological Research Foundation of the Department of Education of Hebei Province (ZD2016085) are gratefully acknowledged.

Compliance with ethical standards

The author(s) declare that they have no competing interests.

Ethical approval

This article does not contain any studies with human or animal subjects.

Informed consent

Not applicable.

Supplementary material

604_2019_3583_MOESM1_ESM.doc (232 kb)
ESM 1 (DOC 232 kb)


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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  1. 1.College of ScienceHebei Agricultural UniversityBaodingChina
  2. 2.The Experimental School Attached To Shijiazhuang No.2 Middle SchoolShijiazhuangChina

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