Ajung, O., Tambaru, D., Lapailaka, T., Kadang, L. and Nitti, F. (2025) “Surface Modification of Paper-Based Analytical Devices Using Polymer Inclusion Films as Optical Sensors for The Detection of Cu(II) Ions in Water”, Jurnal Beta Kimia, 5(2), pp. 16-32. doi: 10.35508/jbk.v5i2.24436.