- L, Windri RE, - M. ANALISA KANDUNGAN LOGAM BERAT DAN ION ASAM (NITRAT DAN SULFAT) DALAM AIR ISI ULANG DI PEKANBARU. Photon [Internet]. 2011Oct.30 [cited 2026May4];2(1):27-30. Available from: https://ejurnal.umri.ac.id/index.php/photon/article/view/123