fig16

Figure 16. (A)Schematic representation of the preparation of Fe₃O₄@TtDt@Cu²⁺ composites; (B) the MSPE process for mPAEs in mouse plasma samples; (C)Scheme of the NiFe₂O₄/COF preparation and MSPE procedure for QNs. (A and B) are reprinted with permission from Ref.^[148], Copyright © 2023 by Elsevier. (C) is reproduced with permission from Ref.^[147], Copyright © 2024 by Elsevier. TtDt: Tt (1,3,5-tris-(4-aminophenyl) triazine)-Dt (2,3- dihydroxyterephthalaldehyde) covalent organic framework; MSPE: magnetic solid-phase extraction; mPAEs: phthalate monoesters; COF: covalent organic framework; QNs: quinolones.