本文研究了N_(235)和N_(263)为固定相,对铂系元素和金、铜、钴、镍的纸色层行为,并在此基础上,提出了适于混合物分离的二段色层法.该法以N_(263)为固定相,用4N HCl作展开剂分离钴、铜、镍、铑,用4N HNO_3—2N HCl作展开剂分离金和其余的铂系元素.用此种方法可以满意的分离与鉴定金、铱、铂、钯、铑、锇、钌、钴、铜、镍等十种元素. In this paper, the behavior of paper color layer of platinum series, gold, copper, cobalt and nickel was studied by using Ni (235) and N 26 (263) as stationary phase. Based on this, This method uses N 2 (263) as the stationary phase, separates cobalt, copper, nickel and rhodium with 4N HCl as developing solvent, and separates gold and the rest of the platinum group elements with 4N HNO 3 -2N HCl as developing solvent. The method can be used for the separation and identification of ten elements of gold, iridium, platinum, palladium, rhodium, osmium, ruthenium, cobalt, copper and nickel.