Graphene oxide (GO) and nitron-tungstate were introduced as sensitive matters for the tungstate detection. These elements were doped into plastic membranes to construct eight membrane compositions (Ia–VIIa and Ib) consisting of either the nitron-tungstate ion-pair (IP) only, or both IP and GO (IP+GO), or GO only. The performance characteristics of all of the mentioned compositions were tested. The GO-versions (V–VII) manifested the Nernstain slopes of 21.5 mV/decade, 25 mV/decade and 24.1 mV/decade, respectively. The working pH ranges for the VI- and VII-type sensors were 3.5–10 and 4.2–9.9, respectively and their response times were ≤10 sec and ≤18 sec, respectively, for all concentrations. The LOD for tungstate was detected as 1 × 10−5 M. The fabricated sensor manifested suitable selectivity values for the tested anions. The Va, VIa and VIIa-type sensors were applied successfully for tungstate detection by potentiometric precipitation titration against strontium chloride and the corresponding recovery ranges were 93.33–100%, 92.9–105% and 92.85–100%, respectively. The standard deviation values for the sensor types IIIa, Va, VIa and VIIa-type sensors were 3.66, 2.55, 3.11 and 1.14, respectively