Determination of Pb (II) in Marine Salt Samples by a Coated Graphite Ion Selective Electrode Using ۲,۳-bis(acetoxymethyl)quinoxaline as the Ionophore

This research article presents the development and application of a coated graphite ion selective electrode for the determination of Pb (II) in marine salt samples. The electrode utilizes ۲,۳-bis(acetoxymethyl)quinoxaline as the ionophore, demonstrating high selectivity and sensitivity towards Pb (II) ions. The electrode was characterized for its electrochemical properties and analytical performance, showing a wide linear range (۱۰-۶ molL-۱ to ۱۰-۱mol L-۱) and low detection limit for (۸×۱۰-۷ molL-۱) Pb (II) detection. The method was validated through the analysis of marine salt samples, and the results were compared with those obtained using inductively coupled plasma mass spectrometry (ICP-MS). The proposed electrode offers a simple, cost-effective, and rapid alternative for the determination of Pb (II) in marine salt samples, with potential implications for environmental monitoring and public health protection.

کلیدواژه ها:

Pb (II) ، Potentiometric sensor ، Ion selective electrode ، Marine Salt