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本文研究用732型阳离子交换树脂,一次上柱后,以盐酸、丙酮混合淋洗剂定量分离毫微克量碲、铊、钴和镍,同时,干扰元素在淋洗中也被分离。用微型交换柱,淋洗剂量少,盐酸和丙酮易提纯,降低了测试本底;本装置可避免丙酮挥发。试验了钴-钛铁试剂-过氧化氢催化体系测定钴的条件,特别是使催化反应稳定,手续简便。对诱导法测碲的条件作了适当改变,使灵敏度提高。
In this paper, 732 cation exchange resin was used. After the column was on the column, hydrochloric acid and acetone mixed eluent were used to quantitatively separate nanograms of tellurium, thallium, cobalt and nickel, meanwhile, the interference elements were also separated in the leaching. Using a micro-exchange column, a small amount of eluent, easy purification of hydrochloric acid and acetone, reducing the background of the test; the device can prevent acetone from volatilizing. The conditions for the determination of cobalt by the cobalt-ferrotitanium reagent-hydrogen peroxide catalytic system were tested, in particular, the catalytic reaction was stable and the procedure was simple. Induced method of measuring tellurium conditions made the appropriate changes to increase the sensitivity.