J Chromatogr A 2021 Jan 13;1635:461712. Epub 2020 Nov 13.
Shandong Analysis and Tester Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China.; Shandong Key Laboratory for Adhesive Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China.. Electronic address:
A simple and practical magnetic solid-phase extraction high-performance liquid chromatography-inductively coupled plasma mass spectrometry (MSPE-HPLC-ICP-MS) method for extraction and determination of trace mercury species, including inorganic mercury (IHg), monomethylmercury (MeHg) and ethylmercury (EtHg), was developed. The MSPE adsorbent, urchin-like thiol and thioether-functionalized magnetic covalent organic frameworks (FeO@COF-S-SH), was synthesized by coating covalent organic frameworks (COFs) on the surface of FeO nanoparticles at room temperature and then easily grafting 1,2-Ethanedithiol on the COFs. The as-prepared FeO@COF-S-SH has strong adsorption capacity for IHg, MeHg and EtHg, with excellent static adsorption capacity: 571, 559 and 564 mg g, respectively. Read More