A glassy carbon electrode (GCE) modified with multi-walled carbon nanotube-sodium dodecyl sulfate/Nafion (MWCNT-SDS/Nafion) composite film was constructed and used to determine 1-aminopyrene (1-AP). The surface morphology of the MWCNT-SDS/Nafion film was characterized using scanning electron microscopy and electrochemical impedance spectroscopy. The electrochemical behavior of the 1-AP on the modified electrode was investigated using cyclic voltammetry and adsorptive differential pulse voltammetry. After optimization of analytical conditions, the electrode showed a linear response at 0.04-0.40, 0.40-40.0 and 40.0-160 nM and a detection limit of 0.02 nM. (C) 2015 Elsevier B.V. All rights reserved.