Septiani, D. (2026) “Voltammetric Detection of Zn2+ Ions Using a Glassy Carbon Electrode Modified with Napa-Soil-Derived NiAl₂O₄”, Hydrogen: Jurnal Kependidikan Kimia, 14(2), pp. 415–421. doi: 10.33394/hjkk.v14i2.20367.