1-フェニル-3-メチル-4-ステアロイル-5-ピラゾロンを担持した多孔性高分子樹脂による銅, ニッケル, コバルトの濃縮(<特集>:分離(その1))(抽出・吸着分離)

概要

論文の詳細を見る
1-Phenyl-3-methyl-4-stearoyl-5-pyrazolone (C_<18>) loaded on a porous polymer resin (C_<18>/PPR) was prepared by our laboratory, and used for the preconcentration of Cu (II), Ni (II) and Co (II). Copper was quantitatively retained on C_<18>/PPR from an aqueous solution of pH 2.5,while Ni and Co were retained at nearly 97% at pH>5. The adsorption capacities of C_<18>/PPR adsorbent were ca. 40 μmol g^<-1> for Cu, and ca. 30 μmol g^<-1> for Ni and Co, In the column experiment Cu, Ni and Co were quantitatively retained with 1.5 g C_<18>/PPR at a flow rate of 5 cm^3 min^<-1> and pH 7.5. These metals retained on C_<18>/PPR were completely eluted with 2 mol dm^<-3> hydrochloric acid at a flow rate of 3 cm^3 min^<-1>. The adsorption elution cycle could be repeated twenty times without any observable decline in the efficiency of C_<18>/PPR. Since there were no observable effects due to changes in the volume of the sample solution up to a volume of 5 dm^3 containing 200μg of each metal, a concentration factor of 200 could be achieved. The C_<18>/PPR was applied to a recovery experiment of these metals with sodium chloride reagent (special grade and first class) and solar salt. The recoveries of each metal for these samples tested were 88〜100%. The relative standard deviations (n=5) for each value obtained were less than 4.5%.
社団法人日本分析化学会の論文
1993-11-05