Pengaruh Ion Na+, Ion Hg2+ dan Ion Cr3+ Terhadap Kinerja Sensor Potensiometri Ion Timbal (II) Tipe Kawat Terlapis Berbasis Pirofilit. Valensi. Published online November 30, 2015:80-83. doi:10.15408/jkv.v0i0.3144