Nguyen Thi Mai, Bui Van Nham, Chu Thi Bao Tran, Cao Man Binh, Le Van Dung and Vu Anh Tuan 2024. Research on the process of modifying the bio-adsorbent of Sauropus androgynus to treat ion heavy metals Pb²⁺ in water. Version B of Vietnam Journal of Science and Technology. 66, 10DB-HH (Oct. 2024). DOI:https://doi.org/10.31276/VJST.66(10DB-HH).45-49.