Adsorption of Lead with Silica Gel Modified with Polyamidoamine Dendrimer and Thiomalic AcidXiongzhi Wu, Ziyan Chen, Liangliang Luo, Li Li and Yuan LiuMATEC Web Conf., 67 (2016) 06099DOI: https://doi.org/10.1051/matecconf/20166706099