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本文对革取色谱法分离硫酸体系中的钴、镍进行了研究。用含P507萃取剂的革淋树脂,经过MgSO_4转型后,使Co~(2+)的萃取能力提高而达到了与Ni~(2+)的完全分离。动态研究结果表明,在pH=5.2—5.6的条件下,Co~(2+)全部上柱而Ni~(2+)只部分上柱,用pH≥2.20的H_2SO_4即可将Ni~(2+)淋下而使Co~(2+)、Ni~(2+)分开。该萃淋树脂对微量钴的富集、对含钴样品中镍的分离及测定均达到很好的效果。Ni收率在100％—100.5％之间。
In this paper, the chromatographic separation of sulfuric acid system cobalt, nickel were studied. With P507 extractant leather leaching resin, after MgSO_4 transformation, so that the extraction of Co ~ (2+) increased to achieve a complete separation with Ni ~ (2+). The results of dynamic research show that all of Co 2+ is on the column and Ni 2+ is only partially on the column under the condition of pH = 5.2-5.6, Ni 2+ can be adsorbed by H_2SO_4 with pH≥2.20, ) To separate Co ~ (2 +) and Ni ~ (2+). The extraction resin for trace cobalt enrichment of nickel-containing samples of cobalt separation and determination have achieved good results. The yield of Ni is between 100% and 100.5%.