YANTI, I. Penentuan Cr (VI) and SO42- Menggunakan Spektrofotometri UV-Vis dalam Sampel Air Sungai di Dinas Lingkungan Hidup Kota Semarang. INDONESIAN JOURNAL OF CHEMICAL RESEARCH, [S. l.], v. 6, n. 2, p. 51–58, 2022. DOI: 10.20885/ijcr.vol6.iss2.art1. Disponível em: https://journal.uii.ac.id/chemical/article/view/22511. Acesso em: 4 may. 2024.