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at their analysis in hair samples requires the employed method to have picogram-level sensitivity. Therefore, the developed method was suitable for simultaneous analysis of ZPD, ZPCA, and ZCA in hair samples, and it could provide clear evidence for illegal ZPD administration, including ZPD-facilitated sexual assault.In this article, a magnetic paper-based sorptive phase is synthesized, which synergically combines the sorption capacity of a polyamide with the magnetic behavior of silica shielded Fe3O4 nanoparticles. The resulting material can be easily integ