▎ 摘　　要

The present study demonstrates, a selective detection of F- using aluminium (Al) micro-interdigitated electrode (mu-IDEs) array modified by graphene oxide (GO). The selectivity of the fabricated sensor towards F- in presence of contaminants like, Chloride (Cl-), Bromide (Br-) & Nitrate (NO3-) at concentration of 100 and 50 ppm is investigated using simple electrical measurements. The selectivity of GO/Al-mu-IDEs is attributed to the highest electro-negativity and strong affinity of F- towards Al. The real time, cost effective, selective GO/Al-mu-IDEs based molecular sensors shows the potential for detection of aqueous F- in presence of other contaminants. (c) 2017 Elsevier B.V. All rights reserved.