1：Experimental Design and Method Selection:

The study used a reverse microemulsion method to synthesize CD/Fe3O4@MIPs composite, incorporating Fe3O4 for magnetic properties, CDs for fluorescence, and MIPs for selective recognition of TNP. Characterization was done using TEM, EDS, FT-IR, zeta potential, XRD, and VSM. Fluorometric assays were conducted for detection.

2：Sample Selection and Data Sources:

Real water samples included tap water and river water (Tuojiang River and Minjiang River in China), spiked with TNP for recovery tests. No TNP was detected in unspiked samples.

3：List of Experimental Equipment and Materials:

Instruments included JEM 2100 TEM, HORIBA EX-250 EDS, IR Affinity-1S FT-IR, Malvern Nano-ZS zeta potential analyzer, Ultima IV XRD, Microsense-EZ9 VSM, Shimadzu UV-2600 spectrometer, LS-55 fluorescence spectrometer, and FLS980 lifetime spectrometer. Chemicals included TNP, various nitrophenols, solvents, and reagents from suppliers like Adamas Reagent Co., Ltd.

4：Experimental Procedures and Operational Workflow:

Synthesis of Fe3O4 nanoparticles via solvothermal method, preparation of CDs, and composite synthesis via reverse microemulsion. Optimization of detection conditions (solvent, pH, ionic strength, concentration), rebinding experiments, selectivity tests with interferents, and application to real samples with fluorescence measurements.

5：Data Analysis Methods:

Fluorescence intensity measurements, Stern-Volmer equation for quenching analysis, calculation of limit of detection (LOD), imprinting factor, and statistical analysis of recoveries and RSD.