【摘要】 本文报道了以多乙烯多胺为主链的巯基胺树脂与二硫化碳反应,合成了四种新型的氨基二硫代甲酸型螯合树脂,这类树脂对贵金属具有高的吸附容量和优良的吸附选择性。并通过红外光谱和X光电子能谱研究树脂及其金属螫合物。更多还原

【Abstract】 Chelating resins (PAS) bearing dithiocarbamate groups were prepared by the reaction of carbon disulfide with resin (PA) containing secondary amine, which were obtained from polyethylene polyamines and chloromethylthiirane. The adsorption ability and selectivity of PAS for metals were determined. The order of adsorption ability of PAS for metal ions is Au3+>Pt4+>Ag+>Hg2+>Cu2+>Pb2+>Zn2+.The maxmium adsorption capacities of PAS resin for Au3+ and Ag+ are much higher than that of PA resin. PAS resin exhibits excellent selectivities for noble metals.更多还原