PENGUKURAN KADAR LOGAM Hg, KADMIUM, ARSEN, DAN KROMIUM (VALENSI 6) DALAM AIR SUMUR. LJ [Internet]. 2023 Dec. 12 [cited 2026 Apr. 7];11(2):118-32. Available from: https://www.jurnal.ar-raniry.ac.id/index.php/lantanida/article/view/18358