Sari, T.K., Fithriana, E., Dewata, I. , Kurniawati, D. and Away, R.D.Y. 2023. The Extracted Pectin from Ambarella Fruit Peel (Spondias dulcis) as Biosorbent in Adsorption of Cu(II) Metal Ions. Jurnal Riset Kimia. 14, 2 (Oct. 2023), 188–197. DOI:https://doi.org/10.25077/jrk.v14i2.608.