Finally, the SPE/MWCNTs-Nf/GNPs showed stable electrochemical cyclic voltammetry responses. The high performances of thenovel MA impedimetric sensor are mainly attributed to high surface area-to-volume ratio, excellentconducting capability and interface-dominated properties of GNPs which in combination with specialproperties of MWCNTs provide an effective modifier for MA oxidation. Moreover, using sensitive methodslike impedimetric and stripping results in excellent responses.© 2015 Elsevier B.V. All rights reserved.