Electrochemical determination of atropine at multi-wall carbon nanotube electrode based on the enhancement effect of sodium dodecyl benzene sulfonate

► Atropine yields a well-defined and sensitive oxidation peak at the multi-wall carbon nanotube electrode. ► The oxidation peak current of atropine remarkably increases in the presence of SDBS. ► Concentration of SDBS, accumulation time and pH were optimized for atropine determination. ► The detection limit is 0.449 ng/ml after 2 min of accumulation. ► Method was used to determine atropine in seeds and leaves of Datura stramonium and in its pharmaceutical formulation.