Construction of Chromium Potentiometric Sensor by using N-banzoyl-N′(6-methyl-2-pyridyl) thiourea as an Excellent Ionophore

Ion potentiometric sensors are playing an important role in environmental analysisbecause of their simplicity and rapidity. in this study, a potentiometric liquid membranesensor for simple and fast quantification of chromium in various samples was made. nbanzoyl-n?(6-methyl-2-pyridyl) thiourea was selected as a sensing material in the organicphase of the pvc membrane. the wide linear range (10-6-10-1 mol l-1), low detection limit(3.0×10-7 mol l-1), and fast response time (~5 s) are the characterizations of thiselectrochemical sensor. the effects of some factors such as internal solution, ph, life timeand selectivity were investigated. finally, it was used for direct determination of chromiumand as an indicator electrode in potentiometric titration of chromium ion