In this work, magnetic ZnFe2O4 nanotubes (ZFONTs) were used as a dispersive micro- solid phase extraction adsorbent for the separation and preconcentration of Au(III), Pd(II), and Pt(IV) and determination by inductively coupled plasma mass spectrometry. The experimental results showed that Au(III), Pd(II), and Pt(IV) can be adsorbed quantitatively on the ZFONTs in the pH range of 1.0–5.0, and then eluted completely with 1.0 mL of 1.5% thiourea in 0.5 mol L-1 HNO3 solution. No carryover was observed in the next analysis. Separation of the sorbent from the aqueous phase was carried out by an external magnet to avoid the time-consuming column passing or filtration/centrifugation steps. The parameters influencing the preconcentration and determination of the analytes were examined in detail. Under the optimized conditions, the detection limits of this method were 0.35, 0.17, and 0.64 pg mL-1 for Au, Pd, and Pt, respectively. Precision expressed as the relative standard deviation was less than 6.0% (n= 9, c=1.0 ng mL-1). The developed method was applied to the determination of trace/ultra-trace Au, Pd, and Pt in biological and environmental certified reference materials, and the determined values were in good agreement with the certified values.