Erna Fitriany, Fredy Kurniawan, & Muji Harsini. (2025). Preliminary Study of Modified Iron Electrodes for Ammonia Nitrogen Detection Using Voltammetry Method. Proceeding of International Joint ConferenceĀ onĀ UNESA, 3(1). https://doi.org/10.26740/pijcu.v3i1.7144