Timory, A., Ashah, F. and Timory, S. 2023. A Comparative Study of Light and Heavy Elements Cations in Wastewater in Herat City, Afghanistan. Nangarhar University International Journal of Biosciences. 2, 04 (Dec. 2023), 22–30. DOI:https://doi.org/10.70436/nuijb.v2i04.111.