In this paper,the sorption and exchange properties of Au(I)thiourea complex by NKC9 macroporous strong acidic resin from wead acid solution have been investigated.The results show that the resin can effectively adsorb Au(Tu)+2 ions (Tu=thiourea) at pH=20,and the static saturated adsorption capacity of resin can reach 6438mg/gResin.The adsorbed Au(Tu)+2 can be qualitatively eluted with alcoholsulfuric acid solution,and the elution rate of gold is 985%.
The factors which effect the water leaching of Ginkgo flavones from Ginkgo leaves are discussed,with respect to the leaching temperatures,solvents,pHs,and the leaching times.The best conditions used for water leaching were determined.
